diff --git a/firmware/Include/bd3491.h b/firmware/Include/bd3491.h
new file mode 100644
index 0000000..d603bbe
--- /dev/null
+++ b/firmware/Include/bd3491.h
@@ -0,0 +1,31 @@
+// BD3491 driver
+// author : Julian Daube
+
+#ifndef __AUDIO_MUX_BD3491_H__
+#define __AUDIO_MUX_BD3491_H__
+
+#include "stm32f1xx_hal.h"
+
+void bd_set_input(I2C_HandleTypeDef * handle, uint8_t number);
+
+#define BD_MAX_GAIN 20 // gain in db
+int bd_set_gain(I2C_HandleTypeDef * handle, uint8_t gain_in_db);
+
+#define BD_INF_ATTENUATION 0xFF
+uint8_t bd_set_attenuation(I2C_HandleTypeDef * handle, uint8_t right_channel, uint8_t attenuation_in_db);
+
+// when gain == 0, cut bass boost
+void bd_set_bass_boost(I2C_HandleTypeDef * handle, uint8_t gain);
+// when gain == 0, cut treble boost
+void bd_set_treble_boost(I2C_HandleTypeDef * handle, uint8_t gain);
+
+enum BD_SOURROUND_GAIN {
+ BD_SOURROUND_OFF = 0,
+ BD_SOURROUND_LOW = 5,
+ BD_SOURROUND_MIDDLE = 10,
+ BD_SOURROUND_HIGH = 15,
+};
+
+void bd_set_sourround(I2C_HandleTypeDef * handle, enum BD_SOURROUND_GAIN gain);
+
+#endif
diff --git a/firmware/Include/gpio.h b/firmware/Include/gpio.h
new file mode 100644
index 0000000..a5a8577
--- /dev/null
+++ b/firmware/Include/gpio.h
@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * File Name : gpio.h
+ * Description : This file contains all the functions prototypes for
+ * the gpio
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __gpio_H
+#define __gpio_H
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_GPIO_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*__ pinoutConfig_H */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/i2c.h b/firmware/Include/i2c.h
new file mode 100644
index 0000000..982465a
--- /dev/null
+++ b/firmware/Include/i2c.h
@@ -0,0 +1,58 @@
+/**
+ ******************************************************************************
+ * File Name : I2C.h
+ * Description : This file provides code for the configuration
+ * of the I2C instances.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __i2c_H
+#define __i2c_H
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern I2C_HandleTypeDef hi2c1;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_I2C1_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*__ i2c_H */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/main.h b/firmware/Include/main.h
new file mode 100644
index 0000000..60655c8
--- /dev/null
+++ b/firmware/Include/main.h
@@ -0,0 +1,100 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : main.h
+ * @brief : Header for main.c file.
+ * This file contains the common defines of the application.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx_hal.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported macro ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions prototypes ---------------------------------------------*/
+void Error_Handler(void);
+
+void set_input(uint8_t channel);
+void set_attenuation(uint8_t left, uint8_t right);
+
+/* USER CODE BEGIN EFP */
+
+/* USER CODE END EFP */
+
+/* Private defines -----------------------------------------------------------*/
+#define SW7_LED_Pin GPIO_PIN_1
+#define SW7_LED_GPIO_Port GPIOA
+#define SW7_Pin GPIO_PIN_2
+#define SW7_GPIO_Port GPIOA
+#define SW4_LED_Pin GPIO_PIN_3
+#define SW4_LED_GPIO_Port GPIOA
+#define SW4_Pin GPIO_PIN_4
+#define SW4_GPIO_Port GPIOA
+#define SW6_LED_Pin GPIO_PIN_5
+#define SW6_LED_GPIO_Port GPIOA
+#define SW6_Pin GPIO_PIN_6
+#define SW6_GPIO_Port GPIOA
+#define SW3_LED_Pin GPIO_PIN_7
+#define SW3_LED_GPIO_Port GPIOA
+#define SW5_Pin GPIO_PIN_0
+#define SW5_GPIO_Port GPIOB
+#define SW2_Pin GPIO_PIN_1
+#define SW2_GPIO_Port GPIOB
+#define SW2_LED_Pin GPIO_PIN_2
+#define SW2_LED_GPIO_Port GPIOB
+#define SW3_Pin GPIO_PIN_8
+#define SW3_GPIO_Port GPIOA
+#define SW5_LED_Pin GPIO_PIN_9
+#define SW5_LED_GPIO_Port GPIOA
+#define USER_LED_Pin GPIO_PIN_10
+#define USER_LED_GPIO_Port GPIOA
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MAIN_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/message_parser.h b/firmware/Include/message_parser.h
new file mode 100644
index 0000000..a6a7efe
--- /dev/null
+++ b/firmware/Include/message_parser.h
@@ -0,0 +1,12 @@
+// serial message parser
+// author: Julian Daube
+
+#ifndef __AUDIOMUX_MSGPARSER_H__
+#define __AUDIOMUX_MSGPARSER_H__
+
+
+// handles incoming messages
+int parse_buffer();
+
+
+#endif
diff --git a/firmware/Include/stm32f1xx_hal_conf.h b/firmware/Include/stm32f1xx_hal_conf.h
new file mode 100644
index 0000000..7fe9620
--- /dev/null
+++ b/firmware/Include/stm32f1xx_hal_conf.h
@@ -0,0 +1,370 @@
+/**
+ ******************************************************************************
+ * @file stm32f1xx_hal_conf.h
+ * @brief HAL configuration file.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT(c) 2019 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_HAL_CONF_H
+#define __STM32F1xx_HAL_CONF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/* ########################## Module Selection ############################## */
+/**
+ * @brief This is the list of modules to be used in the HAL driver
+ */
+
+#define HAL_MODULE_ENABLED
+/*#define HAL_ADC_MODULE_ENABLED */
+/*#define HAL_CRYP_MODULE_ENABLED */
+/*#define HAL_CAN_MODULE_ENABLED */
+/*#define HAL_CEC_MODULE_ENABLED */
+/*#define HAL_CORTEX_MODULE_ENABLED */
+/*#define HAL_CRC_MODULE_ENABLED */
+/*#define HAL_DAC_MODULE_ENABLED */
+/*#define HAL_DMA_MODULE_ENABLED */
+/*#define HAL_ETH_MODULE_ENABLED */
+/*#define HAL_FLASH_MODULE_ENABLED */
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_I2C_MODULE_ENABLED
+/*#define HAL_I2S_MODULE_ENABLED */
+/*#define HAL_IRDA_MODULE_ENABLED */
+/*#define HAL_IWDG_MODULE_ENABLED */
+/*#define HAL_NOR_MODULE_ENABLED */
+/*#define HAL_NAND_MODULE_ENABLED */
+/*#define HAL_PCCARD_MODULE_ENABLED */
+#define HAL_PCD_MODULE_ENABLED
+/*#define HAL_HCD_MODULE_ENABLED */
+/*#define HAL_PWR_MODULE_ENABLED */
+/*#define HAL_RCC_MODULE_ENABLED */
+/*#define HAL_RTC_MODULE_ENABLED */
+/*#define HAL_SD_MODULE_ENABLED */
+/*#define HAL_MMC_MODULE_ENABLED */
+/*#define HAL_SDRAM_MODULE_ENABLED */
+/*#define HAL_SMARTCARD_MODULE_ENABLED */
+/*#define HAL_SPI_MODULE_ENABLED */
+/*#define HAL_SRAM_MODULE_ENABLED */
+/*#define HAL_TIM_MODULE_ENABLED */
+/*#define HAL_UART_MODULE_ENABLED */
+/*#define HAL_USART_MODULE_ENABLED */
+/*#define HAL_WWDG_MODULE_ENABLED */
+/*#define HAL_EXTI_MODULE_ENABLED */
+
+#define HAL_CORTEX_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+
+/* ########################## Oscillator Values adaptation ####################*/
+/**
+ * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSE is used as system clock source, directly or through the PLL).
+ */
+#if !defined (HSE_VALUE)
+ #define HSE_VALUE ((uint32_t)8000000) /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+#if !defined (HSE_STARTUP_TIMEOUT)
+ #define HSE_STARTUP_TIMEOUT ((uint32_t)100) /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief Internal High Speed oscillator (HSI) value.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSI is used as system clock source, directly or through the PLL).
+ */
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE ((uint32_t)8000000) /*!< Value of the Internal oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+/**
+ * @brief Internal Low Speed oscillator (LSI) value.
+ */
+#if !defined (LSI_VALUE)
+ #define LSI_VALUE 40000U /*!< LSI Typical Value in Hz */
+#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz
+ The real value may vary depending on the variations
+ in voltage and temperature. */
+
+/**
+ * @brief External Low Speed oscillator (LSE) value.
+ * This value is used by the UART, RTC HAL module to compute the system frequency
+ */
+#if !defined (LSE_VALUE)
+ #define LSE_VALUE ((uint32_t)32768) /*!< Value of the External oscillator in Hz*/
+#endif /* LSE_VALUE */
+
+#if !defined (LSE_STARTUP_TIMEOUT)
+ #define LSE_STARTUP_TIMEOUT ((uint32_t)5000) /*!< Time out for LSE start up, in ms */
+#endif /* LSE_STARTUP_TIMEOUT */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+ === you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+ * @brief This is the HAL system configuration section
+ */
+#define VDD_VALUE ((uint32_t)3300) /*!< Value of VDD in mv */
+#define TICK_INT_PRIORITY ((uint32_t)0) /*!< tick interrupt priority (lowest by default) */
+#define USE_RTOS 0
+#define PREFETCH_ENABLE 1
+
+/* ########################## Assert Selection ############################## */
+/**
+ * @brief Uncomment the line below to expanse the "assert_param" macro in the
+ * HAL drivers code
+ */
+/* #define USE_FULL_ASSERT 1U */
+
+/* ################## Ethernet peripheral configuration ##################### */
+
+/* Section 1 : Ethernet peripheral configuration */
+
+/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
+#define MAC_ADDR0 2
+#define MAC_ADDR1 0
+#define MAC_ADDR2 0
+#define MAC_ADDR3 0
+#define MAC_ADDR4 0
+#define MAC_ADDR5 0
+
+/* Definition of the Ethernet driver buffers size and count */
+#define ETH_RX_BUF_SIZE ETH_MAX_PACKET_SIZE /* buffer size for receive */
+#define ETH_TX_BUF_SIZE ETH_MAX_PACKET_SIZE /* buffer size for transmit */
+#define ETH_RXBUFNB ((uint32_t)8) /* 4 Rx buffers of size ETH_RX_BUF_SIZE */
+#define ETH_TXBUFNB ((uint32_t)4) /* 4 Tx buffers of size ETH_TX_BUF_SIZE */
+
+/* Section 2: PHY configuration section */
+
+/* DP83848_PHY_ADDRESS Address*/
+#define DP83848_PHY_ADDRESS 0x01U
+/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/
+#define PHY_RESET_DELAY ((uint32_t)0x000000FF)
+/* PHY Configuration delay */
+#define PHY_CONFIG_DELAY ((uint32_t)0x00000FFF)
+
+#define PHY_READ_TO ((uint32_t)0x0000FFFF)
+#define PHY_WRITE_TO ((uint32_t)0x0000FFFF)
+
+/* Section 3: Common PHY Registers */
+
+#define PHY_BCR ((uint16_t)0x00) /*!< Transceiver Basic Control Register */
+#define PHY_BSR ((uint16_t)0x01) /*!< Transceiver Basic Status Register */
+
+#define PHY_RESET ((uint16_t)0x8000) /*!< PHY Reset */
+#define PHY_LOOPBACK ((uint16_t)0x4000) /*!< Select loop-back mode */
+#define PHY_FULLDUPLEX_100M ((uint16_t)0x2100) /*!< Set the full-duplex mode at 100 Mb/s */
+#define PHY_HALFDUPLEX_100M ((uint16_t)0x2000) /*!< Set the half-duplex mode at 100 Mb/s */
+#define PHY_FULLDUPLEX_10M ((uint16_t)0x0100) /*!< Set the full-duplex mode at 10 Mb/s */
+#define PHY_HALFDUPLEX_10M ((uint16_t)0x0000) /*!< Set the half-duplex mode at 10 Mb/s */
+#define PHY_AUTONEGOTIATION ((uint16_t)0x1000) /*!< Enable auto-negotiation function */
+#define PHY_RESTART_AUTONEGOTIATION ((uint16_t)0x0200) /*!< Restart auto-negotiation function */
+#define PHY_POWERDOWN ((uint16_t)0x0800) /*!< Select the power down mode */
+#define PHY_ISOLATE ((uint16_t)0x0400) /*!< Isolate PHY from MII */
+
+#define PHY_AUTONEGO_COMPLETE ((uint16_t)0x0020) /*!< Auto-Negotiation process completed */
+#define PHY_LINKED_STATUS ((uint16_t)0x0004) /*!< Valid link established */
+#define PHY_JABBER_DETECTION ((uint16_t)0x0002) /*!< Jabber condition detected */
+
+/* Section 4: Extended PHY Registers */
+#define PHY_SR ((uint16_t)0x10U) /*!< PHY status register Offset */
+
+#define PHY_SPEED_STATUS ((uint16_t)0x0002U) /*!< PHY Speed mask */
+#define PHY_DUPLEX_STATUS ((uint16_t)0x0004U) /*!< PHY Duplex mask */
+
+/* Includes ------------------------------------------------------------------*/
+/**
+ * @brief Include module's header file
+ */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+ #include "stm32f1xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_EXTI_MODULE_ENABLED
+ #include "stm32f1xx_hal_exti.h"
+#endif /* HAL_EXTI_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+ #include "stm32f1xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+ #include "stm32f1xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+
+#ifdef HAL_ETH_MODULE_ENABLED
+ #include "stm32f1xx_hal_eth.h"
+#endif /* HAL_ETH_MODULE_ENABLED */
+
+#ifdef HAL_CAN_MODULE_ENABLED
+ #include "stm32f1xx_hal_can.h"
+#endif /* HAL_CAN_MODULE_ENABLED */
+
+#ifdef HAL_CEC_MODULE_ENABLED
+ #include "stm32f1xx_hal_cec.h"
+#endif /* HAL_CEC_MODULE_ENABLED */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+ #include "stm32f1xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+ #include "stm32f1xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+ #include "stm32f1xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+ #include "stm32f1xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+ #include "stm32f1xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+#ifdef HAL_SRAM_MODULE_ENABLED
+ #include "stm32f1xx_hal_sram.h"
+#endif /* HAL_SRAM_MODULE_ENABLED */
+
+#ifdef HAL_NOR_MODULE_ENABLED
+ #include "stm32f1xx_hal_nor.h"
+#endif /* HAL_NOR_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+ #include "stm32f1xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+ #include "stm32f1xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+ #include "stm32f1xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+ #include "stm32f1xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+ #include "stm32f1xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_PCCARD_MODULE_ENABLED
+ #include "stm32f1xx_hal_pccard.h"
+#endif /* HAL_PCCARD_MODULE_ENABLED */
+
+#ifdef HAL_SD_MODULE_ENABLED
+ #include "stm32f1xx_hal_sd.h"
+#endif /* HAL_SD_MODULE_ENABLED */
+
+#ifdef HAL_MMC_MODULE_ENABLED
+ #include "stm32f1xx_hal_mmc.h"
+#endif /* HAL_MMC_MODULE_ENABLED */
+
+#ifdef HAL_NAND_MODULE_ENABLED
+ #include "stm32f1xx_hal_nand.h"
+#endif /* HAL_NAND_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+ #include "stm32f1xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+ #include "stm32f1xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+ #include "stm32f1xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+ #include "stm32f1xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+ #include "stm32f1xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+ #include "stm32f1xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+ #include "stm32f1xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+ #include "stm32f1xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_HCD_MODULE_ENABLED
+ #include "stm32f1xx_hal_hcd.h"
+#endif /* HAL_HCD_MODULE_ENABLED */
+
+
+/* Exported macro ------------------------------------------------------------*/
+#ifdef USE_FULL_ASSERT
+/**
+ * @brief The assert_param macro is used for function's parameters check.
+ * @param expr: If expr is false, it calls assert_failed function
+ * which reports the name of the source file and the source
+ * line number of the call that failed.
+ * If expr is true, it returns no value.
+ * @retval None
+ */
+ #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+ void assert_failed(uint8_t* file, uint32_t line);
+#else
+ #define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F1xx_HAL_CONF_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/stm32f1xx_it.h b/firmware/Include/stm32f1xx_it.h
new file mode 100644
index 0000000..05f1fae
--- /dev/null
+++ b/firmware/Include/stm32f1xx_it.h
@@ -0,0 +1,70 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file stm32f1xx_it.h
+ * @brief This file contains the headers of the interrupt handlers.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_IT_H
+#define __STM32F1xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported macro ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions prototypes ---------------------------------------------*/
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+void USB_LP_CAN1_RX0_IRQHandler(void);
+/* USER CODE BEGIN EFP */
+
+/* USER CODE END EFP */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F1xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usb_device.h b/firmware/Include/usb_device.h
new file mode 100644
index 0000000..077e941
--- /dev/null
+++ b/firmware/Include/usb_device.h
@@ -0,0 +1,105 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usb_device.h
+ * @version : v2.0_Cube
+ * @brief : Header for usb_device.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_DEVICE__H__
+#define __USB_DEVICE__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup USBD_OTG_DRIVER
+ * @{
+ */
+
+/** @defgroup USBD_DEVICE USBD_DEVICE
+ * @brief Device file for Usb otg low level driver.
+ * @{
+ */
+
+/** @defgroup USBD_DEVICE_Exported_Variables USBD_DEVICE_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/*
+ * -- Insert your variables declaration here --
+ */
+/* USER CODE BEGIN VARIABLES */
+
+/* USER CODE END VARIABLES */
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DEVICE_Exported_FunctionsPrototype USBD_DEVICE_Exported_FunctionsPrototype
+ * @brief Declaration of public functions for Usb device.
+ * @{
+ */
+
+/** USB Device initialization function. */
+void MX_USB_DEVICE_Init(void);
+
+/*
+ * -- Insert functions declaration here --
+ */
+/* USER CODE BEGIN FD */
+
+/* USER CODE END FD */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_DEVICE__H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_cdc.h b/firmware/Include/usbd_cdc.h
new file mode 100644
index 0000000..d937b2e
--- /dev/null
+++ b/firmware/Include/usbd_cdc.h
@@ -0,0 +1,179 @@
+/**
+ ******************************************************************************
+ * @file usbd_cdc.h
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief header file for the usbd_cdc.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_CDC_H
+#define __USB_CDC_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_ioreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup usbd_cdc
+ * @brief This file is the Header file for usbd_cdc.c
+ * @{
+ */
+
+
+/** @defgroup usbd_cdc_Exported_Defines
+ * @{
+ */
+#define CDC_IN_EP 0x81 /* EP1 for data IN */
+#define CDC_OUT_EP 0x01 /* EP1 for data OUT */
+#define CDC_CMD_EP 0x82 /* EP2 for CDC commands */
+
+/* CDC Endpoints parameters: you can fine tune these values depending on the needed baudrates and performance. */
+#define CDC_DATA_HS_MAX_PACKET_SIZE 512 /* Endpoint IN & OUT Packet size */
+#define CDC_DATA_FS_MAX_PACKET_SIZE 64 /* Endpoint IN & OUT Packet size */
+#define CDC_CMD_PACKET_SIZE 8 /* Control Endpoint Packet size */
+
+#define USB_CDC_CONFIG_DESC_SIZ 67
+#define CDC_DATA_HS_IN_PACKET_SIZE CDC_DATA_HS_MAX_PACKET_SIZE
+#define CDC_DATA_HS_OUT_PACKET_SIZE CDC_DATA_HS_MAX_PACKET_SIZE
+
+#define CDC_DATA_FS_IN_PACKET_SIZE CDC_DATA_FS_MAX_PACKET_SIZE
+#define CDC_DATA_FS_OUT_PACKET_SIZE CDC_DATA_FS_MAX_PACKET_SIZE
+
+/*---------------------------------------------------------------------*/
+/* CDC definitions */
+/*---------------------------------------------------------------------*/
+#define CDC_SEND_ENCAPSULATED_COMMAND 0x00
+#define CDC_GET_ENCAPSULATED_RESPONSE 0x01
+#define CDC_SET_COMM_FEATURE 0x02
+#define CDC_GET_COMM_FEATURE 0x03
+#define CDC_CLEAR_COMM_FEATURE 0x04
+#define CDC_SET_LINE_CODING 0x20
+#define CDC_GET_LINE_CODING 0x21
+#define CDC_SET_CONTROL_LINE_STATE 0x22
+#define CDC_SEND_BREAK 0x23
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_CORE_Exported_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+typedef struct
+{
+ uint32_t bitrate;
+ uint8_t format;
+ uint8_t paritytype;
+ uint8_t datatype;
+}USBD_CDC_LineCodingTypeDef;
+
+typedef struct _USBD_CDC_Itf
+{
+ int8_t (* Init) (void);
+ int8_t (* DeInit) (void);
+ int8_t (* Control) (uint8_t, uint8_t * , uint16_t);
+ int8_t (* Receive) (uint8_t *, uint32_t *);
+
+}USBD_CDC_ItfTypeDef;
+
+
+typedef struct
+{
+ uint32_t data[CDC_DATA_HS_MAX_PACKET_SIZE/4]; /* Force 32bits alignment */
+ uint8_t CmdOpCode;
+ uint8_t CmdLength;
+ uint8_t *RxBuffer;
+ uint8_t *TxBuffer;
+ uint32_t RxLength;
+ uint32_t TxLength;
+
+ __IO uint32_t TxState;
+ __IO uint32_t RxState;
+}
+USBD_CDC_HandleTypeDef;
+
+
+
+/** @defgroup USBD_CORE_Exported_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CORE_Exported_Variables
+ * @{
+ */
+
+extern USBD_ClassTypeDef USBD_CDC;
+#define USBD_CDC_CLASS &USBD_CDC
+/**
+ * @}
+ */
+
+/** @defgroup USB_CORE_Exported_Functions
+ * @{
+ */
+uint8_t USBD_CDC_RegisterInterface (USBD_HandleTypeDef *pdev,
+ USBD_CDC_ItfTypeDef *fops);
+
+uint8_t USBD_CDC_SetTxBuffer (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuff,
+ uint16_t length);
+
+uint8_t USBD_CDC_SetRxBuffer (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuff);
+
+uint8_t USBD_CDC_ReceivePacket (USBD_HandleTypeDef *pdev);
+
+uint8_t USBD_CDC_TransmitPacket (USBD_HandleTypeDef *pdev);
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_CDC_H */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_cdc_if.h b/firmware/Include/usbd_cdc_if.h
new file mode 100644
index 0000000..0e7c8ed
--- /dev/null
+++ b/firmware/Include/usbd_cdc_if.h
@@ -0,0 +1,131 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_cdc_if.h
+ * @version : v2.0_Cube
+ * @brief : Header for usbd_cdc_if.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CDC_IF_H__
+#define __USBD_CDC_IF_H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @brief For Usb device.
+ * @{
+ */
+
+/** @defgroup USBD_CDC_IF USBD_CDC_IF
+ * @brief Usb VCP device module
+ * @{
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Defines USBD_CDC_IF_Exported_Defines
+ * @brief Defines.
+ * @{
+ */
+/* USER CODE BEGIN EXPORTED_DEFINES */
+
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Types USBD_CDC_IF_Exported_Types
+ * @brief Types.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_TYPES */
+
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Macros USBD_CDC_IF_Exported_Macros
+ * @brief Aliases.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_MACRO */
+
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/** CDC Interface callback. */
+extern USBD_CDC_ItfTypeDef USBD_Interface_fops_FS;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_FunctionsPrototype USBD_CDC_IF_Exported_FunctionsPrototype
+ * @brief Public functions declaration.
+ * @{
+ */
+
+uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len);
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+void CDC_Receive_callback(uint8_t* Buf, uint32_t Len);
+
+/* USER CODE END EXPORTED_FUNCTIONS */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_CDC_IF_H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_conf.h b/firmware/Include/usbd_conf.h
new file mode 100644
index 0000000..97e9bae
--- /dev/null
+++ b/firmware/Include/usbd_conf.h
@@ -0,0 +1,179 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_conf.h
+ * @version : v2.0_Cube
+ * @brief : Header for usbd_conf.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CONF__H__
+#define __USBD_CONF__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include
+#include
+#include
+#include "main.h"
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup USBD_OTG_DRIVER
+ * @{
+ */
+
+/** @defgroup USBD_CONF USBD_CONF
+ * @brief Configuration file for Usb otg low level driver.
+ * @{
+ */
+
+/** @defgroup USBD_CONF_Exported_Variables USBD_CONF_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_Defines USBD_CONF_Exported_Defines
+ * @brief Defines for configuration of the Usb device.
+ * @{
+ */
+
+/*---------- -----------*/
+#define USBD_MAX_NUM_INTERFACES 1
+/*---------- -----------*/
+#define USBD_MAX_NUM_CONFIGURATION 1
+/*---------- -----------*/
+#define USBD_MAX_STR_DESC_SIZ 512
+/*---------- -----------*/
+#define USBD_SUPPORT_USER_STRING 0
+/*---------- -----------*/
+#define USBD_DEBUG_LEVEL 0
+/*---------- -----------*/
+#define USBD_SELF_POWERED 1
+/*---------- -----------*/
+#define MAX_STATIC_ALLOC_SIZE 512
+
+/****************************************/
+/* #define for FS and HS identification */
+#define DEVICE_FS 0
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_Macros USBD_CONF_Exported_Macros
+ * @brief Aliases.
+ * @{
+ */
+
+/* Memory management macros */
+
+/** Alias for memory allocation. */
+#define USBD_malloc (uint32_t *)USBD_static_malloc
+
+/** Alias for memory release. */
+#define USBD_free USBD_static_free
+
+/** Alias for memory set. */
+#define USBD_memset /* Not used */
+
+/** Alias for memory copy. */
+#define USBD_memcpy /* Not used */
+
+/** Alias for delay. */
+#define USBD_Delay HAL_Delay
+
+/* For footprint reasons and since only one allocation is handled in the HID class
+ driver, the malloc/free is changed into a static allocation method */
+void *USBD_static_malloc(uint32_t size);
+void USBD_static_free(void *p);
+
+/* DEBUG macros */
+
+#if (USBD_DEBUG_LEVEL > 0)
+#define USBD_UsrLog(...) printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBD_UsrLog(...)
+#endif
+
+#if (USBD_DEBUG_LEVEL > 1)
+
+#define USBD_ErrLog(...) printf("ERROR: ") ;\
+ printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBD_ErrLog(...)
+#endif
+
+#if (USBD_DEBUG_LEVEL > 2)
+#define USBD_DbgLog(...) printf("DEBUG : ") ;\
+ printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBD_DbgLog(...)
+#endif
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_Types USBD_CONF_Exported_Types
+ * @brief Types.
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_FunctionsPrototype USBD_CONF_Exported_FunctionsPrototype
+ * @brief Declaration of public functions for Usb device.
+ * @{
+ */
+
+/* Exported functions -------------------------------------------------------*/
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_CONF__H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_core.h b/firmware/Include/usbd_core.h
new file mode 100644
index 0000000..013a5c1
--- /dev/null
+++ b/firmware/Include/usbd_core.h
@@ -0,0 +1,167 @@
+/**
+ ******************************************************************************
+ * @file usbd_core.h
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief Header file for usbd_core.c file
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CORE_H
+#define __USBD_CORE_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_conf.h"
+#include "usbd_def.h"
+#include "usbd_ioreq.h"
+#include "usbd_ctlreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USBD_CORE
+ * @brief This file is the Header file for usbd_core.c file
+ * @{
+ */
+
+
+/** @defgroup USBD_CORE_Exported_Defines
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_CORE_Exported_TypesDefinitions
+ * @{
+ */
+
+
+/**
+ * @}
+ */
+
+
+
+/** @defgroup USBD_CORE_Exported_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CORE_Exported_Variables
+ * @{
+ */
+#define USBD_SOF USBD_LL_SOF
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CORE_Exported_FunctionsPrototype
+ * @{
+ */
+USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *pdesc, uint8_t id);
+USBD_StatusTypeDef USBD_DeInit(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_Start (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_Stop (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeDef *pclass);
+
+USBD_StatusTypeDef USBD_RunTestMode (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_SetClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx);
+USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx);
+
+USBD_StatusTypeDef USBD_LL_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup);
+USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata);
+USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata);
+
+USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_SetSpeed(USBD_HandleTypeDef *pdev, USBD_SpeedTypeDef speed);
+USBD_StatusTypeDef USBD_LL_Suspend(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef *pdev);
+
+USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum);
+USBD_StatusTypeDef USBD_LL_IsoOUTIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum);
+
+USBD_StatusTypeDef USBD_LL_DevConnected(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_DevDisconnected(USBD_HandleTypeDef *pdev);
+
+/* USBD Low Level Driver */
+USBD_StatusTypeDef USBD_LL_Init (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_DeInit (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_Start(USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_Stop (USBD_HandleTypeDef *pdev);
+USBD_StatusTypeDef USBD_LL_OpenEP (USBD_HandleTypeDef *pdev,
+ uint8_t ep_addr,
+ uint8_t ep_type,
+ uint16_t ep_mps);
+
+USBD_StatusTypeDef USBD_LL_CloseEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);
+USBD_StatusTypeDef USBD_LL_FlushEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);
+USBD_StatusTypeDef USBD_LL_StallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);
+USBD_StatusTypeDef USBD_LL_ClearStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);
+uint8_t USBD_LL_IsStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr);
+USBD_StatusTypeDef USBD_LL_SetUSBAddress (USBD_HandleTypeDef *pdev, uint8_t dev_addr);
+USBD_StatusTypeDef USBD_LL_Transmit (USBD_HandleTypeDef *pdev,
+ uint8_t ep_addr,
+ uint8_t *pbuf,
+ uint16_t size);
+
+USBD_StatusTypeDef USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev,
+ uint8_t ep_addr,
+ uint8_t *pbuf,
+ uint16_t size);
+
+uint32_t USBD_LL_GetRxDataSize (USBD_HandleTypeDef *pdev, uint8_t ep_addr);
+void USBD_LL_Delay (uint32_t Delay);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_CORE_H */
+
+/**
+ * @}
+ */
+
+/**
+* @}
+*/
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
+
diff --git a/firmware/Include/usbd_ctlreq.h b/firmware/Include/usbd_ctlreq.h
new file mode 100644
index 0000000..bf88252
--- /dev/null
+++ b/firmware/Include/usbd_ctlreq.h
@@ -0,0 +1,113 @@
+/**
+ ******************************************************************************
+ * @file usbd_req.h
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief Header file for the usbd_req.c file
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_REQUEST_H
+#define __USB_REQUEST_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_def.h"
+
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USBD_REQ
+ * @brief header file for the usbd_req.c file
+ * @{
+ */
+
+/** @defgroup USBD_REQ_Exported_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_REQ_Exported_Types
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+
+/** @defgroup USBD_REQ_Exported_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBD_REQ_Exported_Variables
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBD_REQ_Exported_FunctionsPrototype
+ * @{
+ */
+
+USBD_StatusTypeDef USBD_StdDevReq (USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req);
+USBD_StatusTypeDef USBD_StdItfReq (USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req);
+USBD_StatusTypeDef USBD_StdEPReq (USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req);
+
+
+void USBD_CtlError (USBD_HandleTypeDef *pdev, USBD_SetupReqTypedef *req);
+
+void USBD_ParseSetupRequest (USBD_SetupReqTypedef *req, uint8_t *pdata);
+
+void USBD_GetString (uint8_t *desc, uint8_t *unicode, uint16_t *len);
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_REQUEST_H */
+
+/**
+ * @}
+ */
+
+/**
+* @}
+*/
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_def.h b/firmware/Include/usbd_def.h
new file mode 100644
index 0000000..8fbe81e
--- /dev/null
+++ b/firmware/Include/usbd_def.h
@@ -0,0 +1,330 @@
+/**
+ ******************************************************************************
+ * @file usbd_def.h
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief General defines for the usb device library
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_DEF_H
+#define __USBD_DEF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_conf.h"
+
+/** @addtogroup STM32_USBD_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USB_DEF
+ * @brief general defines for the usb device library file
+ * @{
+ */
+
+/** @defgroup USB_DEF_Exported_Defines
+ * @{
+ */
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+
+#define USB_LEN_DEV_QUALIFIER_DESC 0x0A
+#define USB_LEN_DEV_DESC 0x12
+#define USB_LEN_CFG_DESC 0x09
+#define USB_LEN_IF_DESC 0x09
+#define USB_LEN_EP_DESC 0x07
+#define USB_LEN_OTG_DESC 0x03
+#define USB_LEN_LANGID_STR_DESC 0x04
+#define USB_LEN_OTHER_SPEED_DESC_SIZ 0x09
+
+#define USBD_IDX_LANGID_STR 0x00
+#define USBD_IDX_MFC_STR 0x01
+#define USBD_IDX_PRODUCT_STR 0x02
+#define USBD_IDX_SERIAL_STR 0x03
+#define USBD_IDX_CONFIG_STR 0x04
+#define USBD_IDX_INTERFACE_STR 0x05
+
+#define USB_REQ_TYPE_STANDARD 0x00
+#define USB_REQ_TYPE_CLASS 0x20
+#define USB_REQ_TYPE_VENDOR 0x40
+#define USB_REQ_TYPE_MASK 0x60
+
+#define USB_REQ_RECIPIENT_DEVICE 0x00
+#define USB_REQ_RECIPIENT_INTERFACE 0x01
+#define USB_REQ_RECIPIENT_ENDPOINT 0x02
+#define USB_REQ_RECIPIENT_MASK 0x03
+
+#define USB_REQ_GET_STATUS 0x00
+#define USB_REQ_CLEAR_FEATURE 0x01
+#define USB_REQ_SET_FEATURE 0x03
+#define USB_REQ_SET_ADDRESS 0x05
+#define USB_REQ_GET_DESCRIPTOR 0x06
+#define USB_REQ_SET_DESCRIPTOR 0x07
+#define USB_REQ_GET_CONFIGURATION 0x08
+#define USB_REQ_SET_CONFIGURATION 0x09
+#define USB_REQ_GET_INTERFACE 0x0A
+#define USB_REQ_SET_INTERFACE 0x0B
+#define USB_REQ_SYNCH_FRAME 0x0C
+
+#define USB_DESC_TYPE_DEVICE 1
+#define USB_DESC_TYPE_CONFIGURATION 2
+#define USB_DESC_TYPE_STRING 3
+#define USB_DESC_TYPE_INTERFACE 4
+#define USB_DESC_TYPE_ENDPOINT 5
+#define USB_DESC_TYPE_DEVICE_QUALIFIER 6
+#define USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION 7
+#define USB_DESC_TYPE_BOS 0x0F
+
+#define USB_CONFIG_REMOTE_WAKEUP 2
+#define USB_CONFIG_SELF_POWERED 1
+
+#define USB_FEATURE_EP_HALT 0
+#define USB_FEATURE_REMOTE_WAKEUP 1
+#define USB_FEATURE_TEST_MODE 2
+
+#define USB_DEVICE_CAPABITY_TYPE 0x10
+
+#define USB_HS_MAX_PACKET_SIZE 512
+#define USB_FS_MAX_PACKET_SIZE 64
+#define USB_MAX_EP0_SIZE 64
+
+/* Device Status */
+#define USBD_STATE_DEFAULT 1
+#define USBD_STATE_ADDRESSED 2
+#define USBD_STATE_CONFIGURED 3
+#define USBD_STATE_SUSPENDED 4
+
+
+/* EP0 State */
+#define USBD_EP0_IDLE 0
+#define USBD_EP0_SETUP 1
+#define USBD_EP0_DATA_IN 2
+#define USBD_EP0_DATA_OUT 3
+#define USBD_EP0_STATUS_IN 4
+#define USBD_EP0_STATUS_OUT 5
+#define USBD_EP0_STALL 6
+
+#define USBD_EP_TYPE_CTRL 0
+#define USBD_EP_TYPE_ISOC 1
+#define USBD_EP_TYPE_BULK 2
+#define USBD_EP_TYPE_INTR 3
+
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_DEF_Exported_TypesDefinitions
+ * @{
+ */
+
+typedef struct usb_setup_req
+{
+
+ uint8_t bmRequest;
+ uint8_t bRequest;
+ uint16_t wValue;
+ uint16_t wIndex;
+ uint16_t wLength;
+}USBD_SetupReqTypedef;
+
+struct _USBD_HandleTypeDef;
+
+typedef struct _Device_cb
+{
+ uint8_t (*Init) (struct _USBD_HandleTypeDef *pdev , uint8_t cfgidx);
+ uint8_t (*DeInit) (struct _USBD_HandleTypeDef *pdev , uint8_t cfgidx);
+ /* Control Endpoints*/
+ uint8_t (*Setup) (struct _USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req);
+ uint8_t (*EP0_TxSent) (struct _USBD_HandleTypeDef *pdev );
+ uint8_t (*EP0_RxReady) (struct _USBD_HandleTypeDef *pdev );
+ /* Class Specific Endpoints*/
+ uint8_t (*DataIn) (struct _USBD_HandleTypeDef *pdev , uint8_t epnum);
+ uint8_t (*DataOut) (struct _USBD_HandleTypeDef *pdev , uint8_t epnum);
+ uint8_t (*SOF) (struct _USBD_HandleTypeDef *pdev);
+ uint8_t (*IsoINIncomplete) (struct _USBD_HandleTypeDef *pdev , uint8_t epnum);
+ uint8_t (*IsoOUTIncomplete) (struct _USBD_HandleTypeDef *pdev , uint8_t epnum);
+
+ uint8_t *(*GetHSConfigDescriptor)(uint16_t *length);
+ uint8_t *(*GetFSConfigDescriptor)(uint16_t *length);
+ uint8_t *(*GetOtherSpeedConfigDescriptor)(uint16_t *length);
+ uint8_t *(*GetDeviceQualifierDescriptor)(uint16_t *length);
+#if (USBD_SUPPORT_USER_STRING == 1)
+ uint8_t *(*GetUsrStrDescriptor)(struct _USBD_HandleTypeDef *pdev ,uint8_t index, uint16_t *length);
+#endif
+
+} USBD_ClassTypeDef;
+
+/* Following USB Device Speed */
+typedef enum
+{
+ USBD_SPEED_HIGH = 0,
+ USBD_SPEED_FULL = 1,
+ USBD_SPEED_LOW = 2,
+}USBD_SpeedTypeDef;
+
+/* Following USB Device status */
+typedef enum {
+ USBD_OK = 0,
+ USBD_BUSY,
+ USBD_FAIL,
+}USBD_StatusTypeDef;
+
+/* USB Device descriptors structure */
+typedef struct
+{
+ uint8_t *(*GetDeviceDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+ uint8_t *(*GetLangIDStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+ uint8_t *(*GetManufacturerStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+ uint8_t *(*GetProductStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+ uint8_t *(*GetSerialStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+ uint8_t *(*GetConfigurationStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+ uint8_t *(*GetInterfaceStrDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+#if (USBD_LPM_ENABLED == 1)
+ uint8_t *(*GetBOSDescriptor)( USBD_SpeedTypeDef speed , uint16_t *length);
+#endif
+} USBD_DescriptorsTypeDef;
+
+/* USB Device handle structure */
+typedef struct
+{
+ uint32_t status;
+ uint32_t total_length;
+ uint32_t rem_length;
+ uint32_t maxpacket;
+} USBD_EndpointTypeDef;
+
+/* USB Device handle structure */
+typedef struct _USBD_HandleTypeDef
+{
+ uint8_t id;
+ uint32_t dev_config;
+ uint32_t dev_default_config;
+ uint32_t dev_config_status;
+ USBD_SpeedTypeDef dev_speed;
+ USBD_EndpointTypeDef ep_in[15];
+ USBD_EndpointTypeDef ep_out[15];
+ uint32_t ep0_state;
+ uint32_t ep0_data_len;
+ uint8_t dev_state;
+ uint8_t dev_old_state;
+ uint8_t dev_address;
+ uint8_t dev_connection_status;
+ uint8_t dev_test_mode;
+ uint32_t dev_remote_wakeup;
+
+ USBD_SetupReqTypedef request;
+ USBD_DescriptorsTypeDef *pDesc;
+ USBD_ClassTypeDef *pClass;
+ void *pClassData;
+ void *pUserData;
+ void *pData;
+} USBD_HandleTypeDef;
+
+/**
+ * @}
+ */
+
+
+
+/** @defgroup USBD_DEF_Exported_Macros
+ * @{
+ */
+#define SWAPBYTE(addr) (((uint16_t)(*((uint8_t *)(addr)))) + \
+ (((uint16_t)(*(((uint8_t *)(addr)) + 1))) << 8))
+
+#define LOBYTE(x) ((uint8_t)(x & 0x00FF))
+#define HIBYTE(x) ((uint8_t)((x & 0xFF00) >>8))
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+
+
+#if defined ( __GNUC__ )
+ #ifndef __weak
+ #define __weak __attribute__((weak))
+ #endif /* __weak */
+ #ifndef __packed
+ #define __packed __attribute__((__packed__))
+ #endif /* __packed */
+#endif /* __GNUC__ */
+
+
+/* In HS mode and when the DMA is used, all variables and data structures dealing
+ with the DMA during the transaction process should be 4-bytes aligned */
+
+#if defined (__GNUC__) /* GNU Compiler */
+ #define __ALIGN_END __attribute__ ((aligned (4)))
+ #define __ALIGN_BEGIN
+#else
+ #define __ALIGN_END
+ #if defined (__CC_ARM) /* ARM Compiler */
+ #define __ALIGN_BEGIN __align(4)
+ #elif defined (__ICCARM__) /* IAR Compiler */
+ #define __ALIGN_BEGIN
+ #elif defined (__TASKING__) /* TASKING Compiler */
+ #define __ALIGN_BEGIN __align(4)
+ #endif /* __CC_ARM */
+#endif /* __GNUC__ */
+
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DEF_Exported_Variables
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DEF_Exported_FunctionsPrototype
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_DEF_H */
+
+/**
+ * @}
+ */
+
+/**
+* @}
+*/
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_desc.h b/firmware/Include/usbd_desc.h
new file mode 100644
index 0000000..0afe095
--- /dev/null
+++ b/firmware/Include/usbd_desc.h
@@ -0,0 +1,145 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_desc.c
+ * @version : v2.0_Cube
+ * @brief : Header for usbd_conf.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_DESC__C__
+#define __USBD_DESC__C__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_def.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USBD_DESC USBD_DESC
+ * @brief Usb device descriptors module.
+ * @{
+ */
+
+/** @defgroup USBD_DESC_Exported_Constants USBD_DESC_Exported_Constants
+ * @brief Constants.
+ * @{
+ */
+#define DEVICE_ID1 (UID_BASE)
+#define DEVICE_ID2 (UID_BASE + 0x4)
+#define DEVICE_ID3 (UID_BASE + 0x8)
+
+#define USB_SIZ_STRING_SERIAL 0x1A
+
+/* USER CODE BEGIN EXPORTED_CONSTANTS */
+
+/* USER CODE END EXPORTED_CONSTANTS */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_Defines USBD_DESC_Exported_Defines
+ * @brief Defines.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_DEFINES */
+
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_TypesDefinitions USBD_DESC_Exported_TypesDefinitions
+ * @brief Types.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_TYPES */
+
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_Macros USBD_DESC_Exported_Macros
+ * @brief Aliases.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_MACRO */
+
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_Variables USBD_DESC_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/** Descriptor for the Usb device. */
+extern USBD_DescriptorsTypeDef FS_Desc;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_FunctionsPrototype USBD_DESC_Exported_FunctionsPrototype
+ * @brief Public functions declaration.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+
+/* USER CODE END EXPORTED_FUNCTIONS */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_DESC__C__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Include/usbd_ioreq.h b/firmware/Include/usbd_ioreq.h
new file mode 100644
index 0000000..b476307
--- /dev/null
+++ b/firmware/Include/usbd_ioreq.h
@@ -0,0 +1,128 @@
+/**
+ ******************************************************************************
+ * @file usbd_ioreq.h
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief Header file for the usbd_ioreq.c file
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_IOREQ_H
+#define __USBD_IOREQ_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_def.h"
+#include "usbd_core.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USBD_IOREQ
+ * @brief header file for the usbd_ioreq.c file
+ * @{
+ */
+
+/** @defgroup USBD_IOREQ_Exported_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_IOREQ_Exported_Types
+ * @{
+ */
+
+
+/**
+ * @}
+ */
+
+
+
+/** @defgroup USBD_IOREQ_Exported_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_IOREQ_Exported_Variables
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_IOREQ_Exported_FunctionsPrototype
+ * @{
+ */
+
+USBD_StatusTypeDef USBD_CtlSendData (USBD_HandleTypeDef *pdev,
+ uint8_t *buf,
+ uint16_t len);
+
+USBD_StatusTypeDef USBD_CtlContinueSendData (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len);
+
+USBD_StatusTypeDef USBD_CtlPrepareRx (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len);
+
+USBD_StatusTypeDef USBD_CtlContinueRx (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len);
+
+USBD_StatusTypeDef USBD_CtlSendStatus (USBD_HandleTypeDef *pdev);
+
+USBD_StatusTypeDef USBD_CtlReceiveStatus (USBD_HandleTypeDef *pdev);
+
+uint16_t USBD_GetRxCount (USBD_HandleTypeDef *pdev ,
+ uint8_t epnum);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_IOREQ_H */
+
+/**
+ * @}
+ */
+
+/**
+* @}
+*/
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/bd3491.c b/firmware/Src/bd3491.c
new file mode 100644
index 0000000..b753bb8
--- /dev/null
+++ b/firmware/Src/bd3491.c
@@ -0,0 +1,74 @@
+/*
+ * bd3491.c
+ *
+ * Created on: 20.10.2019
+ * Author: julian
+ */
+
+#include "bd3491.h"
+
+// BD3491 driver
+void bd_write_reg(I2C_HandleTypeDef * handle, uint8_t reg, uint8_t data) {
+ uint8_t out[] = {
+ reg,
+ data
+ };
+
+ HAL_I2C_Master_Transmit(handle, 0b10000010, out, sizeof(out), HAL_MAX_DELAY);
+}
+
+void bd_set_input(I2C_HandleTypeDef * handle, uint8_t number) {
+ if (number > 5) {
+ return;
+ }
+
+ bd_write_reg(handle, 0x04, number);
+}
+
+#define BD_GAIN_TABLE(a) \
+ a( 0, 0) \
+ a( 2, 1) \
+ a( 4, 2) \
+ a( 6, 3) \
+ a( 8, 4) \
+ a(12, 6) \
+ a(16, 8) \
+ a(20, 10)
+
+int bd_set_gain(I2C_HandleTypeDef * handle, uint8_t gain_in_db) {
+ uint8_t regvalue = 0;
+ if (gain_in_db > BD_MAX_GAIN) gain_in_db = BD_MAX_GAIN;
+
+#define FINDREG(db, reg) if (gain_in_db <= db) { gain_in_db = db; regvalue = reg; } else
+ BD_GAIN_TABLE(FINDREG) {
+ // gain not in table (should not happen)
+ }
+#undef FINDREG
+
+ bd_write_reg(handle, 0x06, regvalue<<1);
+ return gain_in_db;
+}
+
+uint8_t bd_set_attenuation(I2C_HandleTypeDef * handle, uint8_t right_channel, uint8_t attenuation_in_db) {
+ if ((attenuation_in_db&0x7F) > 87)
+ attenuation_in_db = BD_INF_ATTENUATION;
+
+ bd_write_reg(handle, 0x21 + right_channel, attenuation_in_db | 0x80);
+ return attenuation_in_db;
+}
+
+// when gain == 0, cut bass boost
+void bd_set_bass_boost(I2C_HandleTypeDef * handle, uint8_t gain) {
+ bd_write_reg(handle, 0x51, (gain == 0)?(0x80):(0x00) | (gain&0x07) << 1);
+}
+
+// when gain == 0, cut treble boost
+void bd_set_treble_boost(I2C_HandleTypeDef * handle, uint8_t gain) {
+ bd_write_reg(handle, 0x57, (gain == 0)?(0x80):(0x00) | (gain&0x07) << 1);
+}
+
+void bd_set_sourround(I2C_HandleTypeDef * handle, enum BD_SOURROUND_GAIN gain) {
+ uint8_t enable = (gain != BD_SOURROUND_OFF)?0x80:0;
+
+ bd_write_reg(handle, 0x78, enable | gain);
+}
diff --git a/firmware/Src/gpio.c b/firmware/Src/gpio.c
new file mode 100644
index 0000000..63ebf88
--- /dev/null
+++ b/firmware/Src/gpio.c
@@ -0,0 +1,91 @@
+/**
+ ******************************************************************************
+ * File Name : gpio.c
+ * Description : This file provides code for the configuration
+ * of all used GPIO pins.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "gpio.h"
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*----------------------------------------------------------------------------*/
+/* Configure GPIO */
+/*----------------------------------------------------------------------------*/
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/** Configure pins as
+ * Analog
+ * Input
+ * Output
+ * EVENT_OUT
+ * EXTI
+*/
+void MX_GPIO_Init(void)
+{
+
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+ /* GPIO Ports Clock Enable */
+ __HAL_RCC_GPIOD_CLK_ENABLE();
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ __HAL_RCC_GPIOB_CLK_ENABLE();
+
+ /*Configure GPIO pin Output Level */
+ HAL_GPIO_WritePin(GPIOA, SW7_LED_Pin|SW4_LED_Pin|SW6_LED_Pin|SW3_LED_Pin
+ |SW5_LED_Pin|USER_LED_Pin, GPIO_PIN_RESET);
+
+ /*Configure GPIO pin Output Level */
+ HAL_GPIO_WritePin(SW2_LED_GPIO_Port, SW2_LED_Pin, GPIO_PIN_RESET);
+
+ /*Configure GPIO pins : PAPin PAPin PAPin PAPin
+ PAPin PAPin */
+ GPIO_InitStruct.Pin = SW7_LED_Pin|SW4_LED_Pin|SW6_LED_Pin|SW3_LED_Pin
+ |SW5_LED_Pin|USER_LED_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /*Configure GPIO pins : PAPin PAPin PAPin PAPin */
+ GPIO_InitStruct.Pin = SW7_Pin|SW4_Pin|SW6_Pin|SW3_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /*Configure GPIO pins : PBPin PBPin */
+ GPIO_InitStruct.Pin = SW5_Pin|SW2_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+ /*Configure GPIO pin : PtPin */
+ GPIO_InitStruct.Pin = SW2_LED_Pin;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ HAL_GPIO_Init(SW2_LED_GPIO_Port, &GPIO_InitStruct);
+
+}
+
+/* USER CODE BEGIN 2 */
+
+/* USER CODE END 2 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/i2c.c b/firmware/Src/i2c.c
new file mode 100644
index 0000000..baec94d
--- /dev/null
+++ b/firmware/Src/i2c.c
@@ -0,0 +1,104 @@
+/**
+ ******************************************************************************
+ * File Name : I2C.c
+ * Description : This file provides code for the configuration
+ * of the I2C instances.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "i2c.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+I2C_HandleTypeDef hi2c1;
+
+/* I2C1 init function */
+void MX_I2C1_Init(void)
+{
+
+ hi2c1.Instance = I2C1;
+ hi2c1.Init.ClockSpeed = 100000;
+ hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
+ hi2c1.Init.OwnAddress1 = 0;
+ hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+ hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+ hi2c1.Init.OwnAddress2 = 0;
+ hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+ hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+ if (HAL_I2C_Init(&hi2c1) != HAL_OK)
+ {
+ Error_Handler();
+ }
+
+}
+
+void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
+{
+
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+ if(i2cHandle->Instance==I2C1)
+ {
+ /* USER CODE BEGIN I2C1_MspInit 0 */
+
+ /* USER CODE END I2C1_MspInit 0 */
+
+ __HAL_RCC_GPIOB_CLK_ENABLE();
+ /**I2C1 GPIO Configuration
+ PB6 ------> I2C1_SCL
+ PB7 ------> I2C1_SDA
+ */
+ GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+ HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+ /* I2C1 clock enable */
+ __HAL_RCC_I2C1_CLK_ENABLE();
+ /* USER CODE BEGIN I2C1_MspInit 1 */
+
+ /* USER CODE END I2C1_MspInit 1 */
+ }
+}
+
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
+{
+
+ if(i2cHandle->Instance==I2C1)
+ {
+ /* USER CODE BEGIN I2C1_MspDeInit 0 */
+
+ /* USER CODE END I2C1_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_I2C1_CLK_DISABLE();
+
+ /**I2C1 GPIO Configuration
+ PB6 ------> I2C1_SCL
+ PB7 ------> I2C1_SDA
+ */
+ HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6|GPIO_PIN_7);
+
+ /* USER CODE BEGIN I2C1_MspDeInit 1 */
+
+ /* USER CODE END I2C1_MspDeInit 1 */
+ }
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/main.c b/firmware/Src/main.c
new file mode 100644
index 0000000..03971ab
--- /dev/null
+++ b/firmware/Src/main.c
@@ -0,0 +1,267 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : main.c
+ * @brief : Main program body
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "i2c.h"
+#include "usb_device.h"
+#include "gpio.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+#include "usbd_cdc_if.h"
+#include "bd3491.h"
+#include "message_parser.h"
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN PTD */
+
+/* USER CODE END PTD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+#define clamp(v, min, max) (((long)(v) > (long)(max))?(max):((long)(v) < (long)(min))?min:v)
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+void SystemClock_Config(void);
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+#define OUTPUT_MAP(a) \
+ a(0, SW3) \
+ a(1, SW2) \
+ a(2, SW5) \
+ a(3, SW6) \
+ a(4, SW4) \
+ a(5, SW7)
+
+#define OUTPUT_LED(a) \
+ a(0, SW5) \
+ a(1, SW2) \
+ a(2, SW3) \
+ a(3, SW6) \
+ a(4, SW4) \
+ a(5, SW7)
+
+void set_input_led(int number, int value) {
+ switch(number) {
+#define CASE(i, name) case i: HAL_GPIO_WritePin(name ## _LED_GPIO_Port, name ## _LED_Pin, value); break;
+ OUTPUT_LED(CASE)
+#undef CASE
+ default:
+ break;
+ }
+}
+
+int test_button_pressed() {
+#define TEST_BUTTON(num, name) \
+ if (GPIO_PIN_RESET == HAL_GPIO_ReadPin(name ## _GPIO_Port, name ## _Pin)) { \
+ return num; \
+ } else
+
+ OUTPUT_MAP(TEST_BUTTON)
+ {
+ return -1;
+ }
+
+#undef TEST_BUTTON
+}
+
+
+void set_input(uint8_t channel) {
+ static uint8_t oldchannel = -1;
+ if (channel == oldchannel || channel >= 6)
+ return;
+
+ set_input_led(oldchannel, 0);
+ set_input_led(channel, 1);
+ bd_set_input(&hi2c1, channel);
+ oldchannel = channel;
+
+ printf("C%d\n", channel);
+}
+
+void set_attenuation(uint8_t left, uint8_t right) {
+ bd_set_attenuation(&hi2c1, 0, left);
+ bd_set_attenuation(&hi2c1, 1, right);
+}
+
+
+
+/* USER CODE END 0 */
+
+/**
+ * @brief The application entry point.
+ * @retval int
+ */
+int main(void)
+{
+ /* USER CODE BEGIN 1 */
+
+ /* USER CODE END 1 */
+
+
+ /* MCU Configuration--------------------------------------------------------*/
+
+ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
+ HAL_Init();
+
+ /* USER CODE BEGIN Init */
+
+ /* USER CODE END Init */
+
+ /* Configure the system clock */
+ SystemClock_Config();
+
+ /* USER CODE BEGIN SysInit */
+
+ /* USER CODE END SysInit */
+
+ /* Initialize all configured peripherals */
+ MX_GPIO_Init();
+ MX_I2C1_Init();
+ MX_USB_DEVICE_Init();
+ /* USER CODE BEGIN 2 */
+ HAL_GPIO_TogglePin(USER_LED_GPIO_Port, USER_LED_Pin);
+ HAL_Delay(100);
+ HAL_GPIO_TogglePin(USER_LED_GPIO_Port, USER_LED_Pin);
+ uint8_t input = 5;
+
+ // reset set input
+ set_input(input);
+ set_attenuation(0,0);
+ /* USER CODE END 2 */
+
+ /* Infinite loop */
+ /* USER CODE BEGIN WHILE */
+ while (1)
+ {
+ /* USER CODE END WHILE */
+
+ /* USER CODE BEGIN 3 */
+
+ // handle button inputs
+ input = test_button_pressed();
+ if (0 <= input) {
+ set_input(input);
+ }
+
+ // parse serial commands
+ parse_buffer();
+ }
+ /* USER CODE END 3 */
+}
+
+/**
+ * @brief System Clock Configuration
+ * @retval None
+ */
+void SystemClock_Config(void)
+{
+ RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+ RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+ RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
+
+ /** Initializes the CPU, AHB and APB busses clocks
+ */
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+ RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+ RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
+ RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+ RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ /** Initializes the CPU, AHB and APB busses clocks
+ */
+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+ |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+
+ if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
+ PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
+ if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
+ {
+ Error_Handler();
+ }
+}
+
+/* USER CODE BEGIN 4 */
+
+/* USER CODE END 4 */
+
+/**
+ * @brief This function is executed in case of error occurrence.
+ * @retval None
+ */
+void Error_Handler(void)
+{
+ /* USER CODE BEGIN Error_Handler_Debug */
+ /* User can add his own implementation to report the HAL error return state */
+
+ /* USER CODE END Error_Handler_Debug */
+}
+
+#ifdef USE_FULL_ASSERT
+/**
+ * @brief Reports the name of the source file and the source line number
+ * where the assert_param error has occurred.
+ * @param file: pointer to the source file name
+ * @param line: assert_param error line source number
+ * @retval None
+ */
+void assert_failed(uint8_t *file, uint32_t line)
+{
+ /* USER CODE BEGIN 6 */
+ /* User can add his own implementation to report the file name and line number,
+ tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+ /* USER CODE END 6 */
+}
+#endif /* USE_FULL_ASSERT */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/message_parser.c b/firmware/Src/message_parser.c
new file mode 100644
index 0000000..ee23b1a
--- /dev/null
+++ b/firmware/Src/message_parser.c
@@ -0,0 +1,161 @@
+#include
+
+#include "bd3491.h" // to manipulate the chip further than the normal system ui does
+#include "i2c.h" // for the i2c handle
+
+#include "main.h" // to enable control of the system
+
+struct {
+ char buffer[1000];
+ volatile uint16_t begin, end;
+ volatile uint16_t len;
+} serial_buffer = {};
+
+void serial_buffer_push(char data) {
+ if (serial_buffer.len && serial_buffer.end == serial_buffer.begin)
+ return; // OVF
+
+ serial_buffer.buffer[serial_buffer.end] = data;
+ serial_buffer.end = (serial_buffer.end + 1)%(sizeof(serial_buffer.buffer));
+ serial_buffer.len++;
+}
+char serial_buffer_peek() {
+ if (serial_buffer.len)
+ return serial_buffer.buffer[serial_buffer.begin];
+
+ return 0;
+}
+char serial_buffer_pop() {
+ if (!serial_buffer.len)
+ return 0; // UF
+
+ char result = serial_buffer_peek();
+ serial_buffer.begin = (serial_buffer.begin + 1)%(sizeof(serial_buffer.buffer));
+ serial_buffer.len--;
+ return result;
+}
+
+int serial_buffer_len() {
+ return serial_buffer.len;
+}
+
+void CDC_Receive_callback(uint8_t * data, uint32_t len) {
+ while(len--) {
+ serial_buffer_push(*(data++));
+ }
+}
+
+int skip_white() {
+ while(serial_buffer_peek() == ' ' || serial_buffer_peek() == '\t')
+ serial_buffer_pop();
+
+ return !serial_buffer_len();
+}
+
+int iswhite(char in) {
+ return in == ' ' || in == '\t' || in == '\n';
+}
+
+int skip_non_white() {
+ while(serial_buffer_len() && !iswhite(serial_buffer_peek()))
+ serial_buffer_pop();
+
+ return !serial_buffer_len();
+}
+int skip_line() {
+ while(serial_buffer_len() && serial_buffer_peek() != '\n') serial_buffer_pop();
+
+ if (serial_buffer_peek() == '\n') serial_buffer_pop();
+
+ return !serial_buffer_len();
+}
+
+int next_arg_signed(int16_t * arg) {
+ *arg = 0;
+
+ if (skip_white())
+ return 1;
+
+ int neg = 0;
+ while(serial_buffer_len() && (serial_buffer_peek() == '-' || serial_buffer_peek() == '+')) {
+ if(serial_buffer_pop() == '-')
+ neg = !neg;
+ }
+
+ int count = 0;
+ while(serial_buffer_len() && serial_buffer_peek() >= '0' && serial_buffer_peek() <= '9') {
+ *arg *= 10;
+ *arg += serial_buffer_pop() - '0';
+ ++count;
+ }
+
+ if (neg) {
+ *arg *= -1;
+ }
+
+ return !count;
+}
+int next_arg_unsigned(uint16_t * arg) {
+ *arg = 0;
+
+ if (skip_white())
+ return 1;
+
+ int count = 0;
+ while(serial_buffer_len() && serial_buffer_peek() >= '0' && serial_buffer_peek() <= '9') {
+ *arg *= 10;
+ *arg += serial_buffer_pop() - '0';
+ ++count;
+ }
+
+ return !count;
+}
+
+#include
+
+int parse_buffer() {
+ if (skip_white()) {
+ return 1;
+ }
+
+ char temp;
+ switch((temp = toupper(serial_buffer_pop()))) {
+ case 'C':
+ // change channel
+ {
+ uint16_t channel;
+
+ if (next_arg_unsigned(&channel))
+ break;
+
+ set_input(channel);
+ }
+
+ break;
+ case 'G':
+ // set gain
+ {
+ uint16_t gain;
+ if (next_arg_unsigned(&gain)) break;
+
+ printf("G%d\n", bd_set_gain(&hi2c1, gain));
+ }
+ break;
+ case 'L':
+ case 'R':
+ {
+ uint16_t att;
+ if (next_arg_unsigned(&att)) break;
+
+ printf("%c%d\n", temp, bd_set_attenuation(&hi2c1, temp == 'R', att&0xFF));
+ }
+ break;
+ case 'B':
+ case 'T':
+
+ default:
+ printf("E\n");
+ }
+
+ return skip_line();
+}
diff --git a/firmware/Src/stm32f1xx_hal_msp.c b/firmware/Src/stm32f1xx_hal_msp.c
new file mode 100644
index 0000000..4132823
--- /dev/null
+++ b/firmware/Src/stm32f1xx_hal_msp.c
@@ -0,0 +1,88 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * File Name : stm32f1xx_hal_msp.c
+ * Description : This file provides code for the MSP Initialization
+ * and de-Initialization codes.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN Define */
+
+/* USER CODE END Define */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN Macro */
+
+/* USER CODE END Macro */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* External functions --------------------------------------------------------*/
+/* USER CODE BEGIN ExternalFunctions */
+
+/* USER CODE END ExternalFunctions */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+/**
+ * Initializes the Global MSP.
+ */
+void HAL_MspInit(void)
+{
+ /* USER CODE BEGIN MspInit 0 */
+
+ /* USER CODE END MspInit 0 */
+
+ __HAL_RCC_AFIO_CLK_ENABLE();
+ __HAL_RCC_PWR_CLK_ENABLE();
+
+ /* System interrupt init*/
+
+ /** NOJTAG: JTAG-DP Disabled and SW-DP Enabled
+ */
+ __HAL_AFIO_REMAP_SWJ_NOJTAG();
+
+ /* USER CODE BEGIN MspInit 1 */
+
+ /* USER CODE END MspInit 1 */
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/stm32f1xx_it.c b/firmware/Src/stm32f1xx_it.c
new file mode 100644
index 0000000..adbddcd
--- /dev/null
+++ b/firmware/Src/stm32f1xx_it.c
@@ -0,0 +1,217 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file stm32f1xx_it.c
+ * @brief Interrupt Service Routines.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "stm32f1xx_it.h"
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* External variables --------------------------------------------------------*/
+extern PCD_HandleTypeDef hpcd_USB_FS;
+/* USER CODE BEGIN EV */
+
+/* USER CODE END EV */
+
+/******************************************************************************/
+/* Cortex-M3 Processor Interruption and Exception Handlers */
+/******************************************************************************/
+/**
+ * @brief This function handles Non maskable interrupt.
+ */
+void NMI_Handler(void)
+{
+ /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
+
+ /* USER CODE END NonMaskableInt_IRQn 0 */
+ /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
+
+ /* USER CODE END NonMaskableInt_IRQn 1 */
+}
+
+/**
+ * @brief This function handles Hard fault interrupt.
+ */
+void HardFault_Handler(void)
+{
+ /* USER CODE BEGIN HardFault_IRQn 0 */
+
+ /* USER CODE END HardFault_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_HardFault_IRQn 0 */
+ /* USER CODE END W1_HardFault_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles Memory management fault.
+ */
+void MemManage_Handler(void)
+{
+ /* USER CODE BEGIN MemoryManagement_IRQn 0 */
+
+ /* USER CODE END MemoryManagement_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
+ /* USER CODE END W1_MemoryManagement_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles Prefetch fault, memory access fault.
+ */
+void BusFault_Handler(void)
+{
+ /* USER CODE BEGIN BusFault_IRQn 0 */
+
+ /* USER CODE END BusFault_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_BusFault_IRQn 0 */
+ /* USER CODE END W1_BusFault_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles Undefined instruction or illegal state.
+ */
+void UsageFault_Handler(void)
+{
+ /* USER CODE BEGIN UsageFault_IRQn 0 */
+
+ /* USER CODE END UsageFault_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
+ /* USER CODE END W1_UsageFault_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles System service call via SWI instruction.
+ */
+void SVC_Handler(void)
+{
+ /* USER CODE BEGIN SVCall_IRQn 0 */
+
+ /* USER CODE END SVCall_IRQn 0 */
+ /* USER CODE BEGIN SVCall_IRQn 1 */
+
+ /* USER CODE END SVCall_IRQn 1 */
+}
+
+/**
+ * @brief This function handles Debug monitor.
+ */
+void DebugMon_Handler(void)
+{
+ /* USER CODE BEGIN DebugMonitor_IRQn 0 */
+
+ /* USER CODE END DebugMonitor_IRQn 0 */
+ /* USER CODE BEGIN DebugMonitor_IRQn 1 */
+
+ /* USER CODE END DebugMonitor_IRQn 1 */
+}
+
+/**
+ * @brief This function handles Pendable request for system service.
+ */
+void PendSV_Handler(void)
+{
+ /* USER CODE BEGIN PendSV_IRQn 0 */
+
+ /* USER CODE END PendSV_IRQn 0 */
+ /* USER CODE BEGIN PendSV_IRQn 1 */
+
+ /* USER CODE END PendSV_IRQn 1 */
+}
+
+/**
+ * @brief This function handles System tick timer.
+ */
+void SysTick_Handler(void)
+{
+ /* USER CODE BEGIN SysTick_IRQn 0 */
+
+ /* USER CODE END SysTick_IRQn 0 */
+ HAL_IncTick();
+ /* USER CODE BEGIN SysTick_IRQn 1 */
+
+ /* USER CODE END SysTick_IRQn 1 */
+}
+
+/******************************************************************************/
+/* STM32F1xx Peripheral Interrupt Handlers */
+/* Add here the Interrupt Handlers for the used peripherals. */
+/* For the available peripheral interrupt handler names, */
+/* please refer to the startup file (startup_stm32f1xx.s). */
+/******************************************************************************/
+
+/**
+ * @brief This function handles USB low priority or CAN RX0 interrupts.
+ */
+void USB_LP_CAN1_RX0_IRQHandler(void)
+{
+ /* USER CODE BEGIN USB_LP_CAN1_RX0_IRQn 0 */
+
+ /* USER CODE END USB_LP_CAN1_RX0_IRQn 0 */
+ HAL_PCD_IRQHandler(&hpcd_USB_FS);
+ /* USER CODE BEGIN USB_LP_CAN1_RX0_IRQn 1 */
+
+ /* USER CODE END USB_LP_CAN1_RX0_IRQn 1 */
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/syscalls.c b/firmware/Src/syscalls.c
new file mode 100644
index 0000000..e3c8a89
--- /dev/null
+++ b/firmware/Src/syscalls.c
@@ -0,0 +1,204 @@
+/**
+*****************************************************************************
+**
+** File : syscalls.c
+**
+** Abstract : System Workbench Minimal System calls file
+**
+** For more information about which c-functions
+** need which of these lowlevel functions
+** please consult the Newlib libc-manual
+**
+** Environment : System Workbench for MCU
+**
+** Distribution: The file is distributed “as is,” without any warranty
+** of any kind.
+**
+*****************************************************************************
+**
+** © COPYRIGHT(c) 2014 Ac6
+**
+** Redistribution and use in source and binary forms, with or without modification,
+** are permitted provided that the following conditions are met:
+** 1. Redistributions of source code must retain the above copyright notice,
+** this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright notice,
+** this list of conditions and the following disclaimer in the documentation
+** and/or other materials provided with the distribution.
+** 3. Neither the name of Ac6 nor the names of its contributors
+** may be used to endorse or promote products derived from this software
+** without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**
+*****************************************************************************
+*/
+
+/* Includes */
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+
+/* Variables */
+//#undef errno
+extern int errno;
+extern int __io_putchar(int ch) __attribute__((weak));
+extern int __io_getchar(void) __attribute__((weak));
+
+register char * stack_ptr asm("sp");
+
+char *__env[1] = { 0 };
+char **environ = __env;
+
+
+/* Functions */
+void initialise_monitor_handles()
+{
+}
+
+int _getpid(void)
+{
+ return 1;
+}
+
+int _kill(int pid, int sig)
+{
+ errno = EINVAL;
+ return -1;
+}
+
+void _exit (int status)
+{
+ _kill(status, -1);
+ while (1) {} /* Make sure we hang here */
+}
+
+__attribute__((weak)) int _read(int file, char *ptr, int len)
+{
+ int DataIdx;
+
+ for (DataIdx = 0; DataIdx < len; DataIdx++)
+ {
+ *ptr++ = __io_getchar();
+ }
+
+return len;
+}
+
+__attribute__((weak)) int _write(int file, char *ptr, int len)
+{
+ int DataIdx;
+
+ for (DataIdx = 0; DataIdx < len; DataIdx++)
+ {
+ __io_putchar(*ptr++);
+ }
+ return len;
+}
+
+caddr_t _sbrk(int incr)
+{
+ extern char end asm("end");
+ static char *heap_end;
+ char *prev_heap_end;
+
+ if (heap_end == 0)
+ heap_end = &end;
+
+ prev_heap_end = heap_end;
+ if (heap_end + incr > stack_ptr)
+ {
+// write(1, "Heap and stack collision\n", 25);
+// abort();
+ errno = ENOMEM;
+ return (caddr_t) -1;
+ }
+
+ heap_end += incr;
+
+ return (caddr_t) prev_heap_end;
+}
+
+int _close(int file)
+{
+ return -1;
+}
+
+
+int _fstat(int file, struct stat *st)
+{
+ st->st_mode = S_IFCHR;
+ return 0;
+}
+
+int _isatty(int file)
+{
+ return 1;
+}
+
+int _lseek(int file, int ptr, int dir)
+{
+ return 0;
+}
+
+int _open(char *path, int flags, ...)
+{
+ /* Pretend like we always fail */
+ return -1;
+}
+
+int _wait(int *status)
+{
+ errno = ECHILD;
+ return -1;
+}
+
+int _unlink(char *name)
+{
+ errno = ENOENT;
+ return -1;
+}
+
+int _times(struct tms *buf)
+{
+ return -1;
+}
+
+int _stat(char *file, struct stat *st)
+{
+ st->st_mode = S_IFCHR;
+ return 0;
+}
+
+int _link(char *old, char *new)
+{
+ errno = EMLINK;
+ return -1;
+}
+
+int _fork(void)
+{
+ errno = EAGAIN;
+ return -1;
+}
+
+int _execve(char *name, char **argv, char **env)
+{
+ errno = ENOMEM;
+ return -1;
+}
diff --git a/firmware/Src/system_stm32f1xx.c b/firmware/Src/system_stm32f1xx.c
new file mode 100644
index 0000000..af3759a
--- /dev/null
+++ b/firmware/Src/system_stm32f1xx.c
@@ -0,0 +1,448 @@
+/**
+ ******************************************************************************
+ * @file system_stm32f1xx.c
+ * @author MCD Application Team
+ * @version V4.2.0
+ * @date 31-March-2017
+ * @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
+ *
+ * 1. This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
+ * factors, AHB/APBx prescalers and Flash settings).
+ * This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32f1xx_xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ * 2. After each device reset the HSI (8 MHz) is used as system clock source.
+ * Then SystemInit() function is called, in "startup_stm32f1xx_xx.s" file, to
+ * configure the system clock before to branch to main program.
+ *
+ * 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depending on
+ * the product used), refer to "HSE_VALUE".
+ * When HSE is used as system clock source, directly or through PLL, and you
+ * are using different crystal you have to adapt the HSE value to your own
+ * configuration.
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT(c) 2017 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f1xx_system
+ * @{
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Includes
+ * @{
+ */
+
+#include "stm32f1xx.h"
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Defines
+ * @{
+ */
+
+#if !defined (HSE_VALUE)
+ #define HSE_VALUE 8000000U /*!< Default value of the External oscillator in Hz.
+ This value can be provided and adapted by the user application. */
+#endif /* HSE_VALUE */
+
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE 8000000U /*!< Default value of the Internal oscillator in Hz.
+ This value can be provided and adapted by the user application. */
+#endif /* HSI_VALUE */
+
+/*!< Uncomment the following line if you need to use external SRAM */
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+/* #define DATA_IN_ExtSRAM */
+#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
+
+/*!< Uncomment the following line if you need to relocate your vector Table in
+ Internal SRAM. */
+/* #define VECT_TAB_SRAM */
+#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
+ This value must be a multiple of 0x200. */
+
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Variables
+ * @{
+ */
+
+/*******************************************************************************
+* Clock Definitions
+*******************************************************************************/
+#if defined(STM32F100xB) ||defined(STM32F100xE)
+ uint32_t SystemCoreClock = 24000000U; /*!< System Clock Frequency (Core Clock) */
+#else /*!< HSI Selected as System Clock source */
+ uint32_t SystemCoreClock = 72000000U; /*!< System Clock Frequency (Core Clock) */
+#endif
+
+const uint8_t AHBPrescTable[16U] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+const uint8_t APBPrescTable[8U] = {0, 0, 0, 0, 1, 2, 3, 4};
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_FunctionPrototypes
+ * @{
+ */
+
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+#ifdef DATA_IN_ExtSRAM
+ static void SystemInit_ExtMemCtl(void);
+#endif /* DATA_IN_ExtSRAM */
+#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the Embedded Flash Interface, the PLL and update the
+ * SystemCoreClock variable.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+void SystemInit (void)
+{
+ /* Reset the RCC clock configuration to the default reset state(for debug purpose) */
+ /* Set HSION bit */
+ RCC->CR |= 0x00000001U;
+
+ /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
+#if !defined(STM32F105xC) && !defined(STM32F107xC)
+ RCC->CFGR &= 0xF8FF0000U;
+#else
+ RCC->CFGR &= 0xF0FF0000U;
+#endif /* STM32F105xC */
+
+ /* Reset HSEON, CSSON and PLLON bits */
+ RCC->CR &= 0xFEF6FFFFU;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= 0xFFFBFFFFU;
+
+ /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
+ RCC->CFGR &= 0xFF80FFFFU;
+
+#if defined(STM32F105xC) || defined(STM32F107xC)
+ /* Reset PLL2ON and PLL3ON bits */
+ RCC->CR &= 0xEBFFFFFFU;
+
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x00FF0000U;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000U;
+#elif defined(STM32F100xB) || defined(STM32F100xE)
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000U;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000U;
+#else
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000U;
+#endif /* STM32F105xC */
+
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+ #ifdef DATA_IN_ExtSRAM
+ SystemInit_ExtMemCtl();
+ #endif /* DATA_IN_ExtSRAM */
+#endif
+
+#ifdef VECT_TAB_SRAM
+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
+#else
+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */
+#endif
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock (HCLK), it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock (HCLK) changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+ *
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+ *
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+ * or HSI_VALUE(*) multiplied by the PLL factors.
+ *
+ * (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz or 25 MHz, depending on the product used), user has to ensure
+ * that HSE_VALUE is same as the real frequency of the crystal used.
+ * Otherwise, this function may have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate (void)
+{
+ uint32_t tmp = 0U, pllmull = 0U, pllsource = 0U;
+
+#if defined(STM32F105xC) || defined(STM32F107xC)
+ uint32_t prediv1source = 0U, prediv1factor = 0U, prediv2factor = 0U, pll2mull = 0U;
+#endif /* STM32F105xC */
+
+#if defined(STM32F100xB) || defined(STM32F100xE)
+ uint32_t prediv1factor = 0U;
+#endif /* STM32F100xB or STM32F100xE */
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+ switch (tmp)
+ {
+ case 0x00U: /* HSI used as system clock */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ case 0x04U: /* HSE used as system clock */
+ SystemCoreClock = HSE_VALUE;
+ break;
+ case 0x08U: /* PLL used as system clock */
+
+ /* Get PLL clock source and multiplication factor ----------------------*/
+ pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
+ pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
+
+#if !defined(STM32F105xC) && !defined(STM32F107xC)
+ pllmull = ( pllmull >> 18U) + 2U;
+
+ if (pllsource == 0x00U)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1U) * pllmull;
+ }
+ else
+ {
+ #if defined(STM32F100xB) || defined(STM32F100xE)
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1U;
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ #else
+ /* HSE selected as PLL clock entry */
+ if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
+ {/* HSE oscillator clock divided by 2 */
+ SystemCoreClock = (HSE_VALUE >> 1U) * pllmull;
+ }
+ else
+ {
+ SystemCoreClock = HSE_VALUE * pllmull;
+ }
+ #endif
+ }
+#else
+ pllmull = pllmull >> 18U;
+
+ if (pllmull != 0x0DU)
+ {
+ pllmull += 2U;
+ }
+ else
+ { /* PLL multiplication factor = PLL input clock * 6.5 */
+ pllmull = 13U / 2U;
+ }
+
+ if (pllsource == 0x00U)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1U) * pllmull;
+ }
+ else
+ {/* PREDIV1 selected as PLL clock entry */
+
+ /* Get PREDIV1 clock source and division factor */
+ prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1U;
+
+ if (prediv1source == 0U)
+ {
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ }
+ else
+ {/* PLL2 clock selected as PREDIV1 clock entry */
+
+ /* Get PREDIV2 division factor and PLL2 multiplication factor */
+ prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4U) + 1U;
+ pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8U) + 2U;
+ SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
+ }
+ }
+#endif /* STM32F105xC */
+ break;
+
+ default:
+ SystemCoreClock = HSI_VALUE;
+ break;
+ }
+
+ /* Compute HCLK clock frequency ----------------*/
+ /* Get HCLK prescaler */
+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4U)];
+ /* HCLK clock frequency */
+ SystemCoreClock >>= tmp;
+}
+
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+/**
+ * @brief Setup the external memory controller. Called in startup_stm32f1xx.s
+ * before jump to __main
+ * @param None
+ * @retval None
+ */
+#ifdef DATA_IN_ExtSRAM
+/**
+ * @brief Setup the external memory controller.
+ * Called in startup_stm32f1xx_xx.s/.c before jump to main.
+ * This function configures the external SRAM mounted on STM3210E-EVAL
+ * board (STM32 High density devices). This SRAM will be used as program
+ * data memory (including heap and stack).
+ * @param None
+ * @retval None
+ */
+void SystemInit_ExtMemCtl(void)
+{
+ __IO uint32_t tmpreg;
+ /*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
+ required, then adjust the Register Addresses */
+
+ /* Enable FSMC clock */
+ RCC->AHBENR = 0x00000114U;
+
+ /* Delay after an RCC peripheral clock enabling */
+ tmpreg = READ_BIT(RCC->AHBENR, RCC_AHBENR_FSMCEN);
+
+ /* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
+ RCC->APB2ENR = 0x000001E0U;
+
+ /* Delay after an RCC peripheral clock enabling */
+ tmpreg = READ_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPDEN);
+
+ (void)(tmpreg);
+
+/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
+/*---------------- SRAM Address lines configuration -------------------------*/
+/*---------------- NOE and NWE configuration --------------------------------*/
+/*---------------- NE3 configuration ----------------------------------------*/
+/*---------------- NBL0, NBL1 configuration ---------------------------------*/
+
+ GPIOD->CRL = 0x44BB44BBU;
+ GPIOD->CRH = 0xBBBBBBBBU;
+
+ GPIOE->CRL = 0xB44444BBU;
+ GPIOE->CRH = 0xBBBBBBBBU;
+
+ GPIOF->CRL = 0x44BBBBBBU;
+ GPIOF->CRH = 0xBBBB4444U;
+
+ GPIOG->CRL = 0x44BBBBBBU;
+ GPIOG->CRH = 0x444B4B44U;
+
+/*---------------- FSMC Configuration ---------------------------------------*/
+/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
+
+ FSMC_Bank1->BTCR[4U] = 0x00001091U;
+ FSMC_Bank1->BTCR[5U] = 0x00110212U;
+}
+#endif /* DATA_IN_ExtSRAM */
+#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usb_device.c b/firmware/Src/usb_device.c
new file mode 100644
index 0000000..a787ae8
--- /dev/null
+++ b/firmware/Src/usb_device.c
@@ -0,0 +1,101 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usb_device.c
+ * @version : v2.0_Cube
+ * @brief : This file implements the USB Device
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "usb_device.h"
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_cdc.h"
+#include "usbd_cdc_if.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/* USER CODE BEGIN PFP */
+/* Private function prototypes -----------------------------------------------*/
+
+/* USER CODE END PFP */
+
+/* USB Device Core handle declaration. */
+USBD_HandleTypeDef hUsbDeviceFS;
+
+/*
+ * -- Insert your variables declaration here --
+ */
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*
+ * -- Insert your external function declaration here --
+ */
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/**
+ * Init USB device Library, add supported class and start the library
+ * @retval None
+ */
+void MX_USB_DEVICE_Init(void)
+{
+ /* USER CODE BEGIN USB_DEVICE_Init_PreTreatment */
+
+ /* USER CODE END USB_DEVICE_Init_PreTreatment */
+
+ /* Init Device Library, add supported class and start the library. */
+ if (USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ if (USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ if (USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ if (USBD_Start(&hUsbDeviceFS) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ /* USER CODE BEGIN USB_DEVICE_Init_PostTreatment */
+
+ /* USER CODE END USB_DEVICE_Init_PostTreatment */
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usbd_cdc.c b/firmware/Src/usbd_cdc.c
new file mode 100644
index 0000000..b2ca5f1
--- /dev/null
+++ b/firmware/Src/usbd_cdc.c
@@ -0,0 +1,925 @@
+/**
+ ******************************************************************************
+ * @file usbd_cdc.c
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief This file provides the high layer firmware functions to manage the
+ * following functionalities of the USB CDC Class:
+ * - Initialization and Configuration of high and low layer
+ * - Enumeration as CDC Device (and enumeration for each implemented memory interface)
+ * - OUT/IN data transfer
+ * - Command IN transfer (class requests management)
+ * - Error management
+ *
+ * @verbatim
+ *
+ * ===================================================================
+ * CDC Class Driver Description
+ * ===================================================================
+ * This driver manages the "Universal Serial Bus Class Definitions for Communications Devices
+ * Revision 1.2 November 16, 2007" and the sub-protocol specification of "Universal Serial Bus
+ * Communications Class Subclass Specification for PSTN Devices Revision 1.2 February 9, 2007"
+ * This driver implements the following aspects of the specification:
+ * - Device descriptor management
+ * - Configuration descriptor management
+ * - Enumeration as CDC device with 2 data endpoints (IN and OUT) and 1 command endpoint (IN)
+ * - Requests management (as described in section 6.2 in specification)
+ * - Abstract Control Model compliant
+ * - Union Functional collection (using 1 IN endpoint for control)
+ * - Data interface class
+ *
+ * These aspects may be enriched or modified for a specific user application.
+ *
+ * This driver doesn't implement the following aspects of the specification
+ * (but it is possible to manage these features with some modifications on this driver):
+ * - Any class-specific aspect relative to communication classes should be managed by user application.
+ * - All communication classes other than PSTN are not managed
+ *
+ * @endverbatim
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc.h"
+#include "usbd_desc.h"
+#include "usbd_ctlreq.h"
+
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+ * @{
+ */
+
+
+/** @defgroup USBD_CDC
+ * @brief usbd core module
+ * @{
+ */
+
+/** @defgroup USBD_CDC_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_CDC_Private_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_CDC_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_CDC_Private_FunctionPrototypes
+ * @{
+ */
+
+
+static uint8_t USBD_CDC_Init (USBD_HandleTypeDef *pdev,
+ uint8_t cfgidx);
+
+static uint8_t USBD_CDC_DeInit (USBD_HandleTypeDef *pdev,
+ uint8_t cfgidx);
+
+static uint8_t USBD_CDC_Setup (USBD_HandleTypeDef *pdev,
+ USBD_SetupReqTypedef *req);
+
+static uint8_t USBD_CDC_DataIn (USBD_HandleTypeDef *pdev,
+ uint8_t epnum);
+
+static uint8_t USBD_CDC_DataOut (USBD_HandleTypeDef *pdev,
+ uint8_t epnum);
+
+static uint8_t USBD_CDC_EP0_RxReady (USBD_HandleTypeDef *pdev);
+
+static uint8_t *USBD_CDC_GetFSCfgDesc (uint16_t *length);
+
+static uint8_t *USBD_CDC_GetHSCfgDesc (uint16_t *length);
+
+static uint8_t *USBD_CDC_GetOtherSpeedCfgDesc (uint16_t *length);
+
+static uint8_t *USBD_CDC_GetOtherSpeedCfgDesc (uint16_t *length);
+
+uint8_t *USBD_CDC_GetDeviceQualifierDescriptor (uint16_t *length);
+
+/* USB Standard Device Descriptor */
+__ALIGN_BEGIN static uint8_t USBD_CDC_DeviceQualifierDesc[USB_LEN_DEV_QUALIFIER_DESC] __ALIGN_END =
+{
+ USB_LEN_DEV_QUALIFIER_DESC,
+ USB_DESC_TYPE_DEVICE_QUALIFIER,
+ 0x00,
+ 0x02,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x40,
+ 0x01,
+ 0x00,
+};
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_Private_Variables
+ * @{
+ */
+
+
+/* CDC interface class callbacks structure */
+USBD_ClassTypeDef USBD_CDC =
+{
+ USBD_CDC_Init,
+ USBD_CDC_DeInit,
+ USBD_CDC_Setup,
+ NULL, /* EP0_TxSent, */
+ USBD_CDC_EP0_RxReady,
+ USBD_CDC_DataIn,
+ USBD_CDC_DataOut,
+ NULL,
+ NULL,
+ NULL,
+ USBD_CDC_GetHSCfgDesc,
+ USBD_CDC_GetFSCfgDesc,
+ USBD_CDC_GetOtherSpeedCfgDesc,
+ USBD_CDC_GetDeviceQualifierDescriptor,
+};
+
+/* USB CDC device Configuration Descriptor */
+__ALIGN_BEGIN uint8_t USBD_CDC_CfgHSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+ /*Configuration Descriptor*/
+ 0x09, /* bLength: Configuration Descriptor size */
+ USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
+ USB_CDC_CONFIG_DESC_SIZ, /* wTotalLength:no of returned bytes */
+ 0x00,
+ 0x02, /* bNumInterfaces: 2 interface */
+ 0x01, /* bConfigurationValue: Configuration value */
+ 0x00, /* iConfiguration: Index of string descriptor describing the configuration */
+ 0xC0, /* bmAttributes: self powered */
+ 0x32, /* MaxPower 0 mA */
+
+ /*---------------------------------------------------------------------------*/
+
+ /*Interface Descriptor */
+ 0x09, /* bLength: Interface Descriptor size */
+ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */
+ /* Interface descriptor type */
+ 0x00, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x01, /* bNumEndpoints: One endpoints used */
+ 0x02, /* bInterfaceClass: Communication Interface Class */
+ 0x02, /* bInterfaceSubClass: Abstract Control Model */
+ 0x01, /* bInterfaceProtocol: Common AT commands */
+ 0x00, /* iInterface: */
+
+ /*Header Functional Descriptor*/
+ 0x05, /* bLength: Endpoint Descriptor size */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x00, /* bDescriptorSubtype: Header Func Desc */
+ 0x10, /* bcdCDC: spec release number */
+ 0x01,
+
+ /*Call Management Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x01, /* bDescriptorSubtype: Call Management Func Desc */
+ 0x00, /* bmCapabilities: D0+D1 */
+ 0x01, /* bDataInterface: 1 */
+
+ /*ACM Functional Descriptor*/
+ 0x04, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
+ 0x02, /* bmCapabilities */
+
+ /*Union Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x06, /* bDescriptorSubtype: Union func desc */
+ 0x00, /* bMasterInterface: Communication class interface */
+ 0x01, /* bSlaveInterface0: Data Class Interface */
+
+ /*Endpoint 2 Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_CMD_EP, /* bEndpointAddress */
+ 0x03, /* bmAttributes: Interrupt */
+ LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_CMD_PACKET_SIZE),
+ 0x10, /* bInterval: */
+ /*---------------------------------------------------------------------------*/
+
+ /*Data class interface descriptor*/
+ 0x09, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */
+ 0x01, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x02, /* bNumEndpoints: Two endpoints used */
+ 0x0A, /* bInterfaceClass: CDC */
+ 0x00, /* bInterfaceSubClass: */
+ 0x00, /* bInterfaceProtocol: */
+ 0x00, /* iInterface: */
+
+ /*Endpoint OUT Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_OUT_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
+ 0x00, /* bInterval: ignore for Bulk transfer */
+
+ /*Endpoint IN Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_IN_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
+ 0x00 /* bInterval: ignore for Bulk transfer */
+} ;
+
+
+/* USB CDC device Configuration Descriptor */
+__ALIGN_BEGIN uint8_t USBD_CDC_CfgFSDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+ /*Configuration Descriptor*/
+ 0x09, /* bLength: Configuration Descriptor size */
+ USB_DESC_TYPE_CONFIGURATION, /* bDescriptorType: Configuration */
+ USB_CDC_CONFIG_DESC_SIZ, /* wTotalLength:no of returned bytes */
+ 0x00,
+ 0x02, /* bNumInterfaces: 2 interface */
+ 0x01, /* bConfigurationValue: Configuration value */
+ 0x00, /* iConfiguration: Index of string descriptor describing the configuration */
+ 0xC0, /* bmAttributes: self powered */
+ 0x32, /* MaxPower 0 mA */
+
+ /*---------------------------------------------------------------------------*/
+
+ /*Interface Descriptor */
+ 0x09, /* bLength: Interface Descriptor size */
+ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */
+ /* Interface descriptor type */
+ 0x00, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x01, /* bNumEndpoints: One endpoints used */
+ 0x02, /* bInterfaceClass: Communication Interface Class */
+ 0x02, /* bInterfaceSubClass: Abstract Control Model */
+ 0x01, /* bInterfaceProtocol: Common AT commands */
+ 0x00, /* iInterface: */
+
+ /*Header Functional Descriptor*/
+ 0x05, /* bLength: Endpoint Descriptor size */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x00, /* bDescriptorSubtype: Header Func Desc */
+ 0x10, /* bcdCDC: spec release number */
+ 0x01,
+
+ /*Call Management Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x01, /* bDescriptorSubtype: Call Management Func Desc */
+ 0x00, /* bmCapabilities: D0+D1 */
+ 0x01, /* bDataInterface: 1 */
+
+ /*ACM Functional Descriptor*/
+ 0x04, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
+ 0x02, /* bmCapabilities */
+
+ /*Union Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x06, /* bDescriptorSubtype: Union func desc */
+ 0x00, /* bMasterInterface: Communication class interface */
+ 0x01, /* bSlaveInterface0: Data Class Interface */
+
+ /*Endpoint 2 Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_CMD_EP, /* bEndpointAddress */
+ 0x03, /* bmAttributes: Interrupt */
+ LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_CMD_PACKET_SIZE),
+ 0x10, /* bInterval: */
+ /*---------------------------------------------------------------------------*/
+
+ /*Data class interface descriptor*/
+ 0x09, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */
+ 0x01, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x02, /* bNumEndpoints: Two endpoints used */
+ 0x0A, /* bInterfaceClass: CDC */
+ 0x00, /* bInterfaceSubClass: */
+ 0x00, /* bInterfaceProtocol: */
+ 0x00, /* iInterface: */
+
+ /*Endpoint OUT Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_OUT_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
+ 0x00, /* bInterval: ignore for Bulk transfer */
+
+ /*Endpoint IN Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_IN_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
+ 0x00 /* bInterval: ignore for Bulk transfer */
+} ;
+
+__ALIGN_BEGIN uint8_t USBD_CDC_OtherSpeedCfgDesc[USB_CDC_CONFIG_DESC_SIZ] __ALIGN_END =
+{
+ 0x09, /* bLength: Configuation Descriptor size */
+ USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION,
+ USB_CDC_CONFIG_DESC_SIZ,
+ 0x00,
+ 0x02, /* bNumInterfaces: 2 interfaces */
+ 0x01, /* bConfigurationValue: */
+ 0x04, /* iConfiguration: */
+ 0xC0, /* bmAttributes: */
+ 0x32, /* MaxPower 100 mA */
+
+ /*Interface Descriptor */
+ 0x09, /* bLength: Interface Descriptor size */
+ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: Interface */
+ /* Interface descriptor type */
+ 0x00, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x01, /* bNumEndpoints: One endpoints used */
+ 0x02, /* bInterfaceClass: Communication Interface Class */
+ 0x02, /* bInterfaceSubClass: Abstract Control Model */
+ 0x01, /* bInterfaceProtocol: Common AT commands */
+ 0x00, /* iInterface: */
+
+ /*Header Functional Descriptor*/
+ 0x05, /* bLength: Endpoint Descriptor size */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x00, /* bDescriptorSubtype: Header Func Desc */
+ 0x10, /* bcdCDC: spec release number */
+ 0x01,
+
+ /*Call Management Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x01, /* bDescriptorSubtype: Call Management Func Desc */
+ 0x00, /* bmCapabilities: D0+D1 */
+ 0x01, /* bDataInterface: 1 */
+
+ /*ACM Functional Descriptor*/
+ 0x04, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x02, /* bDescriptorSubtype: Abstract Control Management desc */
+ 0x02, /* bmCapabilities */
+
+ /*Union Functional Descriptor*/
+ 0x05, /* bFunctionLength */
+ 0x24, /* bDescriptorType: CS_INTERFACE */
+ 0x06, /* bDescriptorSubtype: Union func desc */
+ 0x00, /* bMasterInterface: Communication class interface */
+ 0x01, /* bSlaveInterface0: Data Class Interface */
+
+ /*Endpoint 2 Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT , /* bDescriptorType: Endpoint */
+ CDC_CMD_EP, /* bEndpointAddress */
+ 0x03, /* bmAttributes: Interrupt */
+ LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
+ HIBYTE(CDC_CMD_PACKET_SIZE),
+ 0xFF, /* bInterval: */
+
+ /*---------------------------------------------------------------------------*/
+
+ /*Data class interface descriptor*/
+ 0x09, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_INTERFACE, /* bDescriptorType: */
+ 0x01, /* bInterfaceNumber: Number of Interface */
+ 0x00, /* bAlternateSetting: Alternate setting */
+ 0x02, /* bNumEndpoints: Two endpoints used */
+ 0x0A, /* bInterfaceClass: CDC */
+ 0x00, /* bInterfaceSubClass: */
+ 0x00, /* bInterfaceProtocol: */
+ 0x00, /* iInterface: */
+
+ /*Endpoint OUT Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_OUT_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ 0x40, /* wMaxPacketSize: */
+ 0x00,
+ 0x00, /* bInterval: ignore for Bulk transfer */
+
+ /*Endpoint IN Descriptor*/
+ 0x07, /* bLength: Endpoint Descriptor size */
+ USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
+ CDC_IN_EP, /* bEndpointAddress */
+ 0x02, /* bmAttributes: Bulk */
+ 0x40, /* wMaxPacketSize: */
+ 0x00,
+ 0x00 /* bInterval */
+};
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief USBD_CDC_Init
+ * Initialize the CDC interface
+ * @param pdev: device instance
+ * @param cfgidx: Configuration index
+ * @retval status
+ */
+static uint8_t USBD_CDC_Init (USBD_HandleTypeDef *pdev,
+ uint8_t cfgidx)
+{
+ uint8_t ret = 0;
+ USBD_CDC_HandleTypeDef *hcdc;
+
+ if(pdev->dev_speed == USBD_SPEED_HIGH )
+ {
+ /* Open EP IN */
+ USBD_LL_OpenEP(pdev,
+ CDC_IN_EP,
+ USBD_EP_TYPE_BULK,
+ CDC_DATA_HS_IN_PACKET_SIZE);
+
+ /* Open EP OUT */
+ USBD_LL_OpenEP(pdev,
+ CDC_OUT_EP,
+ USBD_EP_TYPE_BULK,
+ CDC_DATA_HS_OUT_PACKET_SIZE);
+
+ }
+ else
+ {
+ /* Open EP IN */
+ USBD_LL_OpenEP(pdev,
+ CDC_IN_EP,
+ USBD_EP_TYPE_BULK,
+ CDC_DATA_FS_IN_PACKET_SIZE);
+
+ /* Open EP OUT */
+ USBD_LL_OpenEP(pdev,
+ CDC_OUT_EP,
+ USBD_EP_TYPE_BULK,
+ CDC_DATA_FS_OUT_PACKET_SIZE);
+ }
+ /* Open Command IN EP */
+ USBD_LL_OpenEP(pdev,
+ CDC_CMD_EP,
+ USBD_EP_TYPE_INTR,
+ CDC_CMD_PACKET_SIZE);
+
+
+ pdev->pClassData = USBD_malloc(sizeof (USBD_CDC_HandleTypeDef));
+
+ if(pdev->pClassData == NULL)
+ {
+ ret = 1;
+ }
+ else
+ {
+ hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ /* Init physical Interface components */
+ ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Init();
+
+ /* Init Xfer states */
+ hcdc->TxState =0;
+ hcdc->RxState =0;
+
+ if(pdev->dev_speed == USBD_SPEED_HIGH )
+ {
+ /* Prepare Out endpoint to receive next packet */
+ USBD_LL_PrepareReceive(pdev,
+ CDC_OUT_EP,
+ hcdc->RxBuffer,
+ CDC_DATA_HS_OUT_PACKET_SIZE);
+ }
+ else
+ {
+ /* Prepare Out endpoint to receive next packet */
+ USBD_LL_PrepareReceive(pdev,
+ CDC_OUT_EP,
+ hcdc->RxBuffer,
+ CDC_DATA_FS_OUT_PACKET_SIZE);
+ }
+
+
+ }
+ return ret;
+}
+
+/**
+ * @brief USBD_CDC_Init
+ * DeInitialize the CDC layer
+ * @param pdev: device instance
+ * @param cfgidx: Configuration index
+ * @retval status
+ */
+static uint8_t USBD_CDC_DeInit (USBD_HandleTypeDef *pdev,
+ uint8_t cfgidx)
+{
+ uint8_t ret = 0;
+
+ /* Open EP IN */
+ USBD_LL_CloseEP(pdev,
+ CDC_IN_EP);
+
+ /* Open EP OUT */
+ USBD_LL_CloseEP(pdev,
+ CDC_OUT_EP);
+
+ /* Open Command IN EP */
+ USBD_LL_CloseEP(pdev,
+ CDC_CMD_EP);
+
+
+ /* DeInit physical Interface components */
+ if(pdev->pClassData != NULL)
+ {
+ ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->DeInit();
+ USBD_free(pdev->pClassData);
+ pdev->pClassData = NULL;
+ }
+
+ return ret;
+}
+
+/**
+ * @brief USBD_CDC_Setup
+ * Handle the CDC specific requests
+ * @param pdev: instance
+ * @param req: usb requests
+ * @retval status
+ */
+static uint8_t USBD_CDC_Setup (USBD_HandleTypeDef *pdev,
+ USBD_SetupReqTypedef *req)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+ static uint8_t ifalt = 0;
+
+ switch (req->bmRequest & USB_REQ_TYPE_MASK)
+ {
+ case USB_REQ_TYPE_CLASS :
+ if (req->wLength)
+ {
+ if (req->bmRequest & 0x80)
+ {
+ ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(req->bRequest,
+ (uint8_t *)hcdc->data,
+ req->wLength);
+ USBD_CtlSendData (pdev,
+ (uint8_t *)hcdc->data,
+ req->wLength);
+ }
+ else
+ {
+ hcdc->CmdOpCode = req->bRequest;
+ hcdc->CmdLength = req->wLength;
+
+ USBD_CtlPrepareRx (pdev,
+ (uint8_t *)hcdc->data,
+ req->wLength);
+ }
+
+ }
+ else
+ {
+ ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(req->bRequest,
+ (uint8_t*)req,
+ 0);
+ }
+ break;
+
+ case USB_REQ_TYPE_STANDARD:
+ switch (req->bRequest)
+ {
+ case USB_REQ_GET_INTERFACE :
+ USBD_CtlSendData (pdev,
+ &ifalt,
+ 1);
+ break;
+
+ case USB_REQ_SET_INTERFACE :
+ break;
+ }
+
+ default:
+ break;
+ }
+ return USBD_OK;
+}
+
+/**
+ * @brief USBD_CDC_DataIn
+ * Data sent on non-control IN endpoint
+ * @param pdev: device instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+static uint8_t USBD_CDC_DataIn (USBD_HandleTypeDef *pdev, uint8_t epnum)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ if(pdev->pClassData != NULL)
+ {
+
+ hcdc->TxState = 0;
+
+ return USBD_OK;
+ }
+ else
+ {
+ return USBD_FAIL;
+ }
+}
+
+/**
+ * @brief USBD_CDC_DataOut
+ * Data received on non-control Out endpoint
+ * @param pdev: device instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+static uint8_t USBD_CDC_DataOut (USBD_HandleTypeDef *pdev, uint8_t epnum)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ /* Get the received data length */
+ hcdc->RxLength = USBD_LL_GetRxDataSize (pdev, epnum);
+
+ /* USB data will be immediately processed, this allow next USB traffic being
+ NAKed till the end of the application Xfer */
+ if(pdev->pClassData != NULL)
+ {
+ ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Receive(hcdc->RxBuffer, &hcdc->RxLength);
+
+ return USBD_OK;
+ }
+ else
+ {
+ return USBD_FAIL;
+ }
+}
+
+
+
+/**
+ * @brief USBD_CDC_DataOut
+ * Data received on non-control Out endpoint
+ * @param pdev: device instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+static uint8_t USBD_CDC_EP0_RxReady (USBD_HandleTypeDef *pdev)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ if((pdev->pUserData != NULL) && (hcdc->CmdOpCode != 0xFF))
+ {
+ ((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Control(hcdc->CmdOpCode,
+ (uint8_t *)hcdc->data,
+ hcdc->CmdLength);
+ hcdc->CmdOpCode = 0xFF;
+
+ }
+ return USBD_OK;
+}
+
+/**
+ * @brief USBD_CDC_GetFSCfgDesc
+ * Return configuration descriptor
+ * @param speed : current device speed
+ * @param length : pointer data length
+ * @retval pointer to descriptor buffer
+ */
+static uint8_t *USBD_CDC_GetFSCfgDesc (uint16_t *length)
+{
+ *length = sizeof (USBD_CDC_CfgFSDesc);
+ return USBD_CDC_CfgFSDesc;
+}
+
+/**
+ * @brief USBD_CDC_GetHSCfgDesc
+ * Return configuration descriptor
+ * @param speed : current device speed
+ * @param length : pointer data length
+ * @retval pointer to descriptor buffer
+ */
+static uint8_t *USBD_CDC_GetHSCfgDesc (uint16_t *length)
+{
+ *length = sizeof (USBD_CDC_CfgHSDesc);
+ return USBD_CDC_CfgHSDesc;
+}
+
+/**
+ * @brief USBD_CDC_GetCfgDesc
+ * Return configuration descriptor
+ * @param speed : current device speed
+ * @param length : pointer data length
+ * @retval pointer to descriptor buffer
+ */
+static uint8_t *USBD_CDC_GetOtherSpeedCfgDesc (uint16_t *length)
+{
+ *length = sizeof (USBD_CDC_OtherSpeedCfgDesc);
+ return USBD_CDC_OtherSpeedCfgDesc;
+}
+
+/**
+* @brief DeviceQualifierDescriptor
+* return Device Qualifier descriptor
+* @param length : pointer data length
+* @retval pointer to descriptor buffer
+*/
+uint8_t *USBD_CDC_GetDeviceQualifierDescriptor (uint16_t *length)
+{
+ *length = sizeof (USBD_CDC_DeviceQualifierDesc);
+ return USBD_CDC_DeviceQualifierDesc;
+}
+
+/**
+* @brief USBD_CDC_RegisterInterface
+ * @param pdev: device instance
+ * @param fops: CD Interface callback
+ * @retval status
+ */
+uint8_t USBD_CDC_RegisterInterface (USBD_HandleTypeDef *pdev,
+ USBD_CDC_ItfTypeDef *fops)
+{
+ uint8_t ret = USBD_FAIL;
+
+ if(fops != NULL)
+ {
+ pdev->pUserData= fops;
+ ret = USBD_OK;
+ }
+
+ return ret;
+}
+
+/**
+ * @brief USBD_CDC_SetTxBuffer
+ * @param pdev: device instance
+ * @param pbuff: Tx Buffer
+ * @retval status
+ */
+uint8_t USBD_CDC_SetTxBuffer (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuff,
+ uint16_t length)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ hcdc->TxBuffer = pbuff;
+ hcdc->TxLength = length;
+
+ return USBD_OK;
+}
+
+
+/**
+ * @brief USBD_CDC_SetRxBuffer
+ * @param pdev: device instance
+ * @param pbuff: Rx Buffer
+ * @retval status
+ */
+uint8_t USBD_CDC_SetRxBuffer (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuff)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ hcdc->RxBuffer = pbuff;
+
+ return USBD_OK;
+}
+
+/**
+ * @brief USBD_CDC_DataOut
+ * Data received on non-control Out endpoint
+ * @param pdev: device instance
+ * @param epnum: endpoint number
+ * @retval status
+ */
+uint8_t USBD_CDC_TransmitPacket(USBD_HandleTypeDef *pdev)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ if(pdev->pClassData != NULL)
+ {
+ if(hcdc->TxState == 0)
+ {
+ /* Tx Transfer in progress */
+ hcdc->TxState = 1;
+
+ /* Transmit next packet */
+ USBD_LL_Transmit(pdev,
+ CDC_IN_EP,
+ hcdc->TxBuffer,
+ hcdc->TxLength);
+
+ return USBD_OK;
+ }
+ else
+ {
+ return USBD_BUSY;
+ }
+ }
+ else
+ {
+ return USBD_FAIL;
+ }
+}
+
+
+/**
+ * @brief USBD_CDC_ReceivePacket
+ * prepare OUT Endpoint for reception
+ * @param pdev: device instance
+ * @retval status
+ */
+uint8_t USBD_CDC_ReceivePacket(USBD_HandleTypeDef *pdev)
+{
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;
+
+ /* Suspend or Resume USB Out process */
+ if(pdev->pClassData != NULL)
+ {
+ if(pdev->dev_speed == USBD_SPEED_HIGH )
+ {
+ /* Prepare Out endpoint to receive next packet */
+ USBD_LL_PrepareReceive(pdev,
+ CDC_OUT_EP,
+ hcdc->RxBuffer,
+ CDC_DATA_HS_OUT_PACKET_SIZE);
+ }
+ else
+ {
+ /* Prepare Out endpoint to receive next packet */
+ USBD_LL_PrepareReceive(pdev,
+ CDC_OUT_EP,
+ hcdc->RxBuffer,
+ CDC_DATA_FS_OUT_PACKET_SIZE);
+ }
+ return USBD_OK;
+ }
+ else
+ {
+ return USBD_FAIL;
+ }
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usbd_cdc_if.c b/firmware/Src/usbd_cdc_if.c
new file mode 100644
index 0000000..714dcf6
--- /dev/null
+++ b/firmware/Src/usbd_cdc_if.c
@@ -0,0 +1,311 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_cdc_if.c
+ * @version : v2.0_Cube
+ * @brief : Usb device for Virtual Com Port.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc_if.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @brief Usb device library.
+ * @{
+ */
+
+/** @addtogroup USBD_CDC_IF
+ * @{
+ */
+
+/** @defgroup USBD_CDC_IF_Private_TypesDefinitions USBD_CDC_IF_Private_TypesDefinitions
+ * @brief Private types.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_TYPES */
+
+/* USER CODE END PRIVATE_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Private_Defines USBD_CDC_IF_Private_Defines
+ * @brief Private defines.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_DEFINES */
+/* Define size for the receive and transmit buffer over CDC */
+/* It's up to user to redefine and/or remove those define */
+#define APP_RX_DATA_SIZE 1000
+#define APP_TX_DATA_SIZE 1000
+/* USER CODE END PRIVATE_DEFINES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Private_Macros USBD_CDC_IF_Private_Macros
+ * @brief Private macros.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_MACRO */
+
+/* USER CODE END PRIVATE_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Private_Variables USBD_CDC_IF_Private_Variables
+ * @brief Private variables.
+ * @{
+ */
+/* Create buffer for reception and transmission */
+/* It's up to user to redefine and/or remove those define */
+/** Received data over USB are stored in this buffer */
+uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
+
+/** Data to send over USB CDC are stored in this buffer */
+uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
+
+/* USER CODE BEGIN PRIVATE_VARIABLES */
+
+/* USER CODE END PRIVATE_VARIABLES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+extern USBD_HandleTypeDef hUsbDeviceFS;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Private_FunctionPrototypes USBD_CDC_IF_Private_FunctionPrototypes
+ * @brief Private functions declaration.
+ * @{
+ */
+
+static int8_t CDC_Init_FS(void);
+static int8_t CDC_DeInit_FS(void);
+static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length);
+static int8_t CDC_Receive_FS(uint8_t* pbuf, uint32_t *Len);
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_DECLARATION */
+
+/* USER CODE END PRIVATE_FUNCTIONS_DECLARATION */
+
+/**
+ * @}
+ */
+
+USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
+{
+ CDC_Init_FS,
+ CDC_DeInit_FS,
+ CDC_Control_FS,
+ CDC_Receive_FS
+};
+
+/* Private functions ---------------------------------------------------------*/
+/**
+ * @brief Initializes the CDC media low layer over the FS USB IP
+ * @retval USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Init_FS(void)
+{
+ /* USER CODE BEGIN 3 */
+ /* Set Application Buffers */
+ USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
+ USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
+ return (USBD_OK);
+ /* USER CODE END 3 */
+}
+
+/**
+ * @brief DeInitializes the CDC media low layer
+ * @retval USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_DeInit_FS(void)
+{
+ /* USER CODE BEGIN 4 */
+ return (USBD_OK);
+ /* USER CODE END 4 */
+}
+
+/**
+ * @brief Manage the CDC class requests
+ * @param cmd: Command code
+ * @param pbuf: Buffer containing command data (request parameters)
+ * @param length: Number of data to be sent (in bytes)
+ * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
+{
+ /* USER CODE BEGIN 5 */
+ switch(cmd)
+ {
+ case CDC_SEND_ENCAPSULATED_COMMAND:
+
+ break;
+
+ case CDC_GET_ENCAPSULATED_RESPONSE:
+
+ break;
+
+ case CDC_SET_COMM_FEATURE:
+
+ break;
+
+ case CDC_GET_COMM_FEATURE:
+
+ break;
+
+ case CDC_CLEAR_COMM_FEATURE:
+
+ break;
+
+ /*******************************************************************************/
+ /* Line Coding Structure */
+ /*-----------------------------------------------------------------------------*/
+ /* Offset | Field | Size | Value | Description */
+ /* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
+ /* 4 | bCharFormat | 1 | Number | Stop bits */
+ /* 0 - 1 Stop bit */
+ /* 1 - 1.5 Stop bits */
+ /* 2 - 2 Stop bits */
+ /* 5 | bParityType | 1 | Number | Parity */
+ /* 0 - None */
+ /* 1 - Odd */
+ /* 2 - Even */
+ /* 3 - Mark */
+ /* 4 - Space */
+ /* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
+ /*******************************************************************************/
+ case CDC_SET_LINE_CODING:
+
+ break;
+
+ case CDC_GET_LINE_CODING:
+
+ break;
+
+ case CDC_SET_CONTROL_LINE_STATE:
+
+ break;
+
+ case CDC_SEND_BREAK:
+
+ break;
+
+ default:
+ break;
+ }
+
+ return (USBD_OK);
+ /* USER CODE END 5 */
+}
+
+/**
+ * @brief Data received over USB OUT endpoint are sent over CDC interface
+ * through this function.
+ *
+ * @note
+ * This function will block any OUT packet reception on USB endpoint
+ * untill exiting this function. If you exit this function before transfer
+ * is complete on CDC interface (ie. using DMA controller) it will result
+ * in receiving more data while previous ones are still not sent.
+ *
+ * @param Buf: Buffer of data to be received
+ * @param Len: Number of data received (in bytes)
+ * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
+{
+ /* USER CODE BEGIN 6 */
+ USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
+ CDC_Receive_callback(Buf, *Len);
+
+ USBD_CDC_ReceivePacket(&hUsbDeviceFS);
+ return (USBD_OK);
+ /* USER CODE END 6 */
+}
+
+/**
+ * @brief CDC_Transmit_FS
+ * Data to send over USB IN endpoint are sent over CDC interface
+ * through this function.
+ * @note
+ *
+ *
+ * @param Buf: Buffer of data to be sent
+ * @param Len: Number of data to be sent (in bytes)
+ * @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
+ */
+uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
+{
+ uint8_t result = USBD_OK;
+ /* USER CODE BEGIN 7 */
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
+ if (hcdc->TxState != 0){
+ return USBD_BUSY;
+ }
+ USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
+ result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
+ /* USER CODE END 7 */
+ return result;
+}
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usbd_cdc_syscalls.c b/firmware/Src/usbd_cdc_syscalls.c
new file mode 100644
index 0000000..8776f4d
--- /dev/null
+++ b/firmware/Src/usbd_cdc_syscalls.c
@@ -0,0 +1,27 @@
+
+#include "usbd_cdc_if.h"
+
+const long USB_SEND_TIMEOUT = 10000L;
+
+
+uint8_t buffer[128];
+volatile int bufferindex = 0;
+
+void __io_flush() {
+ long count = 0;
+
+ while(count < USB_SEND_TIMEOUT && CDC_Transmit_FS(buffer, bufferindex) == USBD_BUSY) {
+ ++count;
+ }
+
+ bufferindex = 0;
+}
+
+int __io_putchar( int ch )
+{
+ if (ch == '\n') __io_putchar('\r');
+ buffer[bufferindex++] = ch;
+ if (ch == '\n' || bufferindex == sizeof(buffer)) __io_flush();
+
+ return 1;
+}
diff --git a/firmware/Src/usbd_conf.c b/firmware/Src/usbd_conf.c
new file mode 100644
index 0000000..a2b42fb
--- /dev/null
+++ b/firmware/Src/usbd_conf.c
@@ -0,0 +1,663 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_conf.c
+ * @version : v2.0_Cube
+ * @brief : This file implements the board support package for the USB device library
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+#include "usbd_core.h"
+#include "usbd_cdc.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+PCD_HandleTypeDef hpcd_USB_FS;
+void Error_Handler(void);
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* USER CODE BEGIN PFP */
+/* Private function prototypes -----------------------------------------------*/
+
+/* USER CODE END PFP */
+
+/* Private functions ---------------------------------------------------------*/
+static USBD_StatusTypeDef USBD_Get_USB_Status(HAL_StatusTypeDef hal_status);
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+else
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+
+/*******************************************************************************
+ LL Driver Callbacks (PCD -> USB Device Library)
+*******************************************************************************/
+/* MSP Init */
+
+void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)
+{
+ if(pcdHandle->Instance==USB)
+ {
+ /* USER CODE BEGIN USB_MspInit 0 */
+
+ /* USER CODE END USB_MspInit 0 */
+ /* Peripheral clock enable */
+ __HAL_RCC_USB_CLK_ENABLE();
+
+ /* Peripheral interrupt init */
+ HAL_NVIC_SetPriority(USB_LP_CAN1_RX0_IRQn, 0, 0);
+ HAL_NVIC_EnableIRQ(USB_LP_CAN1_RX0_IRQn);
+ /* USER CODE BEGIN USB_MspInit 1 */
+
+ /* USER CODE END USB_MspInit 1 */
+ }
+}
+
+void HAL_PCD_MspDeInit(PCD_HandleTypeDef* pcdHandle)
+{
+ if(pcdHandle->Instance==USB)
+ {
+ /* USER CODE BEGIN USB_MspDeInit 0 */
+
+ /* USER CODE END USB_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_USB_CLK_DISABLE();
+
+ /* Peripheral interrupt Deinit*/
+ HAL_NVIC_DisableIRQ(USB_LP_CAN1_RX0_IRQn);
+
+ /* USER CODE BEGIN USB_MspDeInit 1 */
+
+ /* USER CODE END USB_MspDeInit 1 */
+ }
+}
+
+/**
+ * @brief Setup stage callback
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_SetupStage((USBD_HandleTypeDef*)hpcd->pData, (uint8_t *)hpcd->Setup);
+}
+
+/**
+ * @brief Data Out stage callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DataOutStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->OUT_ep[epnum].xfer_buff);
+}
+
+/**
+ * @brief Data In stage callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DataInStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->IN_ep[epnum].xfer_buff);
+}
+
+/**
+ * @brief SOF callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_SOF((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief Reset callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_SpeedTypeDef speed = USBD_SPEED_FULL;
+
+ if ( hpcd->Init.speed != PCD_SPEED_FULL)
+ {
+ Error_Handler();
+ }
+ /* Set Speed. */
+ USBD_LL_SetSpeed((USBD_HandleTypeDef*)hpcd->pData, speed);
+
+ /* Reset Device. */
+ USBD_LL_Reset((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief Suspend callback.
+ * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ /* Inform USB library that core enters in suspend Mode. */
+ USBD_LL_Suspend((USBD_HandleTypeDef*)hpcd->pData);
+ /* Enter in STOP mode. */
+ /* USER CODE BEGIN 2 */
+ if (hpcd->Init.low_power_enable)
+ {
+ /* Set SLEEPDEEP bit and SleepOnExit of Cortex System Control Register. */
+ SCB->SCR |= (uint32_t)((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
+ }
+ /* USER CODE END 2 */
+}
+
+/**
+ * @brief Resume callback.
+ * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ /* USER CODE BEGIN 3 */
+
+ /* USER CODE END 3 */
+ USBD_LL_Resume((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief ISOOUTIncomplete callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_IsoOUTIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+ * @brief ISOINIncomplete callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_IsoINIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+ * @brief Connect callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DevConnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief Disconnect callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DevDisconnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/*******************************************************************************
+ LL Driver Interface (USB Device Library --> PCD)
+*******************************************************************************/
+
+/**
+ * @brief Initializes the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Init(USBD_HandleTypeDef *pdev)
+{
+ /* Init USB Ip. */
+ /* Link the driver to the stack. */
+ hpcd_USB_FS.pData = pdev;
+ pdev->pData = &hpcd_USB_FS;
+
+ hpcd_USB_FS.Instance = USB;
+ hpcd_USB_FS.Init.dev_endpoints = 8;
+ hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
+ hpcd_USB_FS.Init.low_power_enable = DISABLE;
+ hpcd_USB_FS.Init.lpm_enable = DISABLE;
+ hpcd_USB_FS.Init.battery_charging_enable = DISABLE;
+ if (HAL_PCD_Init(&hpcd_USB_FS) != HAL_OK)
+ {
+ Error_Handler( );
+ }
+
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+ /* Register USB PCD CallBacks */
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_SOF_CB_ID, PCD_SOFCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_SETUPSTAGE_CB_ID, PCD_SetupStageCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_RESET_CB_ID, PCD_ResetCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_SUSPEND_CB_ID, PCD_SuspendCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_RESUME_CB_ID, PCD_ResumeCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_CONNECT_CB_ID, PCD_ConnectCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_DISCONNECT_CB_ID, PCD_DisconnectCallback);
+
+ HAL_PCD_RegisterDataOutStageCallback(&hpcd_USB_FS, PCD_DataOutStageCallback);
+ HAL_PCD_RegisterDataInStageCallback(&hpcd_USB_FS, PCD_DataInStageCallback);
+ HAL_PCD_RegisterIsoOutIncpltCallback(&hpcd_USB_FS, PCD_ISOOUTIncompleteCallback);
+ HAL_PCD_RegisterIsoInIncpltCallback(&hpcd_USB_FS, PCD_ISOINIncompleteCallback);
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+ /* USER CODE BEGIN EndPoint_Configuration */
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x00 , PCD_SNG_BUF, 0x18);
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x80 , PCD_SNG_BUF, 0x58);
+ /* USER CODE END EndPoint_Configuration */
+ /* USER CODE BEGIN EndPoint_Configuration_CDC */
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x81 , PCD_SNG_BUF, 0xC0);
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x01 , PCD_SNG_BUF, 0x110);
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x82 , PCD_SNG_BUF, 0x100);
+ /* USER CODE END EndPoint_Configuration_CDC */
+ return USBD_OK;
+}
+
+/**
+ * @brief De-Initializes the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_DeInit(USBD_HandleTypeDef *pdev)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_DeInit(pdev->pData);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Starts the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Start(USBD_HandleTypeDef *pdev)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_Start(pdev->pData);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Stops the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Stop(USBD_HandleTypeDef *pdev)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_Stop(pdev->pData);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Opens an endpoint of the low level driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @param ep_type: Endpoint type
+ * @param ep_mps: Endpoint max packet size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_OpenEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t ep_type, uint16_t ep_mps)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Open(pdev->pData, ep_addr, ep_mps, ep_type);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Closes an endpoint of the low level driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_CloseEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Close(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Flushes an endpoint of the Low Level Driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_FlushEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Flush(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Sets a Stall condition on an endpoint of the Low Level Driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_StallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_SetStall(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Clears a Stall condition on an endpoint of the Low Level Driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_ClearStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_ClrStall(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Returns Stall condition.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval Stall (1: Yes, 0: No)
+ */
+uint8_t USBD_LL_IsStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ PCD_HandleTypeDef *hpcd = (PCD_HandleTypeDef*) pdev->pData;
+
+ if((ep_addr & 0x80) == 0x80)
+ {
+ return hpcd->IN_ep[ep_addr & 0x7F].is_stall;
+ }
+ else
+ {
+ return hpcd->OUT_ep[ep_addr & 0x7F].is_stall;
+ }
+}
+
+/**
+ * @brief Assigns a USB address to the device.
+ * @param pdev: Device handle
+ * @param dev_addr: Device address
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_SetUSBAddress(USBD_HandleTypeDef *pdev, uint8_t dev_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_SetAddress(pdev->pData, dev_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Transmits data over an endpoint.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @param pbuf: Pointer to data to be sent
+ * @param size: Data size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Transmit(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t *pbuf, uint16_t size)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Prepares an endpoint for reception.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @param pbuf: Pointer to data to be received
+ * @param size: Data size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t *pbuf, uint16_t size)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Returns the last transfered packet size.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval Recived Data Size
+ */
+uint32_t USBD_LL_GetRxDataSize(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ return HAL_PCD_EP_GetRxCount((PCD_HandleTypeDef*) pdev->pData, ep_addr);
+}
+
+/**
+ * @brief Delays routine for the USB device library.
+ * @param Delay: Delay in ms
+ * @retval None
+ */
+void USBD_LL_Delay(uint32_t Delay)
+{
+ HAL_Delay(Delay);
+}
+
+/**
+ * @brief Static single allocation.
+ * @param size: Size of allocated memory
+ * @retval None
+ */
+void *USBD_static_malloc(uint32_t size)
+{
+ static uint32_t mem[(sizeof(USBD_CDC_HandleTypeDef)/4)+1];/* On 32-bit boundary */
+ return mem;
+}
+
+/**
+ * @brief Dummy memory free
+ * @param p: Pointer to allocated memory address
+ * @retval None
+ */
+void USBD_static_free(void *p)
+{
+
+}
+
+/**
+ * @brief Software Device Connection
+ * @param hpcd: PCD handle
+ * @param state: Connection state (0: disconnected / 1: connected)
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
+#else
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ /* USER CODE BEGIN 6 */
+ if (state == 1)
+ {
+ /* Configure Low connection state. */
+
+ }
+ else
+ {
+ /* Configure High connection state. */
+
+ }
+ /* USER CODE END 6 */
+}
+
+/**
+ * @brief Retuns the USB status depending on the HAL status:
+ * @param hal_status: HAL status
+ * @retval USB status
+ */
+USBD_StatusTypeDef USBD_Get_USB_Status(HAL_StatusTypeDef hal_status)
+{
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ switch (hal_status)
+ {
+ case HAL_OK :
+ usb_status = USBD_OK;
+ break;
+ case HAL_ERROR :
+ usb_status = USBD_FAIL;
+ break;
+ case HAL_BUSY :
+ usb_status = USBD_BUSY;
+ break;
+ case HAL_TIMEOUT :
+ usb_status = USBD_FAIL;
+ break;
+ default :
+ usb_status = USBD_FAIL;
+ break;
+ }
+ return usb_status;
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usbd_core.c b/firmware/Src/usbd_core.c
new file mode 100644
index 0000000..0158829
--- /dev/null
+++ b/firmware/Src/usbd_core.c
@@ -0,0 +1,565 @@
+/**
+ ******************************************************************************
+ * @file usbd_core.c
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief This file provides all the USBD core functions.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_core.h"
+
+/** @addtogroup STM32_USBD_DEVICE_LIBRARY
+* @{
+*/
+
+
+/** @defgroup USBD_CORE
+* @brief usbd core module
+* @{
+*/
+
+/** @defgroup USBD_CORE_Private_TypesDefinitions
+* @{
+*/
+/**
+* @}
+*/
+
+
+/** @defgroup USBD_CORE_Private_Defines
+* @{
+*/
+
+/**
+* @}
+*/
+
+
+/** @defgroup USBD_CORE_Private_Macros
+* @{
+*/
+/**
+* @}
+*/
+
+
+
+
+/** @defgroup USBD_CORE_Private_FunctionPrototypes
+* @{
+*/
+
+/**
+* @}
+*/
+
+/** @defgroup USBD_CORE_Private_Variables
+* @{
+*/
+
+/**
+* @}
+*/
+
+/** @defgroup USBD_CORE_Private_Functions
+* @{
+*/
+
+/**
+* @brief USBD_Init
+* Initializes the device stack and load the class driver
+* @param pdev: device instance
+* @param pdesc: Descriptor structure address
+* @param id: Low level core index
+* @retval None
+*/
+USBD_StatusTypeDef USBD_Init(USBD_HandleTypeDef *pdev, USBD_DescriptorsTypeDef *pdesc, uint8_t id)
+{
+ /* Check whether the USB Host handle is valid */
+ if(pdev == NULL)
+ {
+ USBD_ErrLog("Invalid Device handle");
+ return USBD_FAIL;
+ }
+
+ /* Unlink previous class*/
+ if(pdev->pClass != NULL)
+ {
+ pdev->pClass = NULL;
+ }
+
+ /* Assign USBD Descriptors */
+ if(pdesc != NULL)
+ {
+ pdev->pDesc = pdesc;
+ }
+
+ /* Set Device initial State */
+ pdev->dev_state = USBD_STATE_DEFAULT;
+ pdev->id = id;
+ /* Initialize low level driver */
+ USBD_LL_Init(pdev);
+
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_DeInit
+* Re-Initialize th device library
+* @param pdev: device instance
+* @retval status: status
+*/
+USBD_StatusTypeDef USBD_DeInit(USBD_HandleTypeDef *pdev)
+{
+ /* Set Default State */
+ pdev->dev_state = USBD_STATE_DEFAULT;
+
+ /* Free Class Resources */
+ pdev->pClass->DeInit(pdev, pdev->dev_config);
+
+ /* Stop the low level driver */
+ USBD_LL_Stop(pdev);
+
+ /* Initialize low level driver */
+ USBD_LL_DeInit(pdev);
+
+ return USBD_OK;
+}
+
+
+/**
+ * @brief USBD_RegisterClass
+ * Link class driver to Device Core.
+ * @param pDevice : Device Handle
+ * @param pclass: Class handle
+ * @retval USBD Status
+ */
+USBD_StatusTypeDef USBD_RegisterClass(USBD_HandleTypeDef *pdev, USBD_ClassTypeDef *pclass)
+{
+ USBD_StatusTypeDef status = USBD_OK;
+ if(pclass != 0)
+ {
+ /* link the class to the USB Device handle */
+ pdev->pClass = pclass;
+ status = USBD_OK;
+ }
+ else
+ {
+ USBD_ErrLog("Invalid Class handle");
+ status = USBD_FAIL;
+ }
+
+ return status;
+}
+
+/**
+ * @brief USBD_Start
+ * Start the USB Device Core.
+ * @param pdev: Device Handle
+ * @retval USBD Status
+ */
+USBD_StatusTypeDef USBD_Start (USBD_HandleTypeDef *pdev)
+{
+
+ /* Start the low level driver */
+ USBD_LL_Start(pdev);
+
+ return USBD_OK;
+}
+
+/**
+ * @brief USBD_Stop
+ * Stop the USB Device Core.
+ * @param pdev: Device Handle
+ * @retval USBD Status
+ */
+USBD_StatusTypeDef USBD_Stop (USBD_HandleTypeDef *pdev)
+{
+ /* Free Class Resources */
+ pdev->pClass->DeInit(pdev, pdev->dev_config);
+
+ /* Stop the low level driver */
+ USBD_LL_Stop(pdev);
+
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_RunTestMode
+* Launch test mode process
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_RunTestMode (USBD_HandleTypeDef *pdev)
+{
+ return USBD_OK;
+}
+
+
+/**
+* @brief USBD_SetClassConfig
+* Configure device and start the interface
+* @param pdev: device instance
+* @param cfgidx: configuration index
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_SetClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
+{
+ USBD_StatusTypeDef ret = USBD_FAIL;
+
+ if(pdev->pClass != NULL)
+ {
+ /* Set configuration and Start the Class*/
+ if(pdev->pClass->Init(pdev, cfgidx) == 0)
+ {
+ ret = USBD_OK;
+ }
+ }
+ return ret;
+}
+
+/**
+* @brief USBD_ClrClassConfig
+* Clear current configuration
+* @param pdev: device instance
+* @param cfgidx: configuration index
+* @retval status: USBD_StatusTypeDef
+*/
+USBD_StatusTypeDef USBD_ClrClassConfig(USBD_HandleTypeDef *pdev, uint8_t cfgidx)
+{
+ /* Clear configuration and De-initialize the Class process*/
+ pdev->pClass->DeInit(pdev, cfgidx);
+ return USBD_OK;
+}
+
+
+/**
+* @brief USBD_SetupStage
+* Handle the setup stage
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_SetupStage(USBD_HandleTypeDef *pdev, uint8_t *psetup)
+{
+
+ USBD_ParseSetupRequest(&pdev->request, psetup);
+
+ pdev->ep0_state = USBD_EP0_SETUP;
+ pdev->ep0_data_len = pdev->request.wLength;
+
+ switch (pdev->request.bmRequest & 0x1F)
+ {
+ case USB_REQ_RECIPIENT_DEVICE:
+ USBD_StdDevReq (pdev, &pdev->request);
+ break;
+
+ case USB_REQ_RECIPIENT_INTERFACE:
+ USBD_StdItfReq(pdev, &pdev->request);
+ break;
+
+ case USB_REQ_RECIPIENT_ENDPOINT:
+ USBD_StdEPReq(pdev, &pdev->request);
+ break;
+
+ default:
+ USBD_LL_StallEP(pdev , pdev->request.bmRequest & 0x80);
+ break;
+ }
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_DataOutStage
+* Handle data OUT stage
+* @param pdev: device instance
+* @param epnum: endpoint index
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata)
+{
+ USBD_EndpointTypeDef *pep;
+
+ if(epnum == 0)
+ {
+ pep = &pdev->ep_out[0];
+
+ if ( pdev->ep0_state == USBD_EP0_DATA_OUT)
+ {
+ if(pep->rem_length > pep->maxpacket)
+ {
+ pep->rem_length -= pep->maxpacket;
+
+ USBD_CtlContinueRx (pdev,
+ pdata,
+ MIN(pep->rem_length ,pep->maxpacket));
+ }
+ else
+ {
+ if((pdev->pClass->EP0_RxReady != NULL)&&
+ (pdev->dev_state == USBD_STATE_CONFIGURED))
+ {
+ pdev->pClass->EP0_RxReady(pdev);
+ }
+ USBD_CtlSendStatus(pdev);
+ }
+ }
+ }
+ else if((pdev->pClass->DataOut != NULL)&&
+ (pdev->dev_state == USBD_STATE_CONFIGURED))
+ {
+ pdev->pClass->DataOut(pdev, epnum);
+ }
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_DataInStage
+* Handle data in stage
+* @param pdev: device instance
+* @param epnum: endpoint index
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DataInStage(USBD_HandleTypeDef *pdev ,uint8_t epnum, uint8_t *pdata)
+{
+ USBD_EndpointTypeDef *pep;
+
+ if(epnum == 0)
+ {
+ pep = &pdev->ep_in[0];
+
+ if ( pdev->ep0_state == USBD_EP0_DATA_IN)
+ {
+ if(pep->rem_length > pep->maxpacket)
+ {
+ pep->rem_length -= pep->maxpacket;
+
+ USBD_CtlContinueSendData (pdev,
+ pdata,
+ pep->rem_length);
+
+ /* Prepare endpoint for premature end of transfer */
+ USBD_LL_PrepareReceive (pdev,
+ 0,
+ NULL,
+ 0);
+ }
+ else
+ { /* last packet is MPS multiple, so send ZLP packet */
+ if((pep->total_length % pep->maxpacket == 0) &&
+ (pep->total_length >= pep->maxpacket) &&
+ (pep->total_length < pdev->ep0_data_len ))
+ {
+
+ USBD_CtlContinueSendData(pdev , NULL, 0);
+ pdev->ep0_data_len = 0;
+
+ /* Prepare endpoint for premature end of transfer */
+ USBD_LL_PrepareReceive (pdev,
+ 0,
+ NULL,
+ 0);
+ }
+ else
+ {
+ if((pdev->pClass->EP0_TxSent != NULL)&&
+ (pdev->dev_state == USBD_STATE_CONFIGURED))
+ {
+ pdev->pClass->EP0_TxSent(pdev);
+ }
+ USBD_CtlReceiveStatus(pdev);
+ }
+ }
+ }
+ if (pdev->dev_test_mode == 1)
+ {
+ USBD_RunTestMode(pdev);
+ pdev->dev_test_mode = 0;
+ }
+ }
+ else if((pdev->pClass->DataIn != NULL)&&
+ (pdev->dev_state == USBD_STATE_CONFIGURED))
+ {
+ pdev->pClass->DataIn(pdev, epnum);
+ }
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_LL_Reset
+* Handle Reset event
+* @param pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_Reset(USBD_HandleTypeDef *pdev)
+{
+ /* Open EP0 OUT */
+ USBD_LL_OpenEP(pdev,
+ 0x00,
+ USBD_EP_TYPE_CTRL,
+ USB_MAX_EP0_SIZE);
+
+ pdev->ep_out[0].maxpacket = USB_MAX_EP0_SIZE;
+
+ /* Open EP0 IN */
+ USBD_LL_OpenEP(pdev,
+ 0x80,
+ USBD_EP_TYPE_CTRL,
+ USB_MAX_EP0_SIZE);
+
+ pdev->ep_in[0].maxpacket = USB_MAX_EP0_SIZE;
+ /* Upon Reset call user call back */
+ pdev->dev_state = USBD_STATE_DEFAULT;
+
+ if (pdev->pClassData)
+ pdev->pClass->DeInit(pdev, pdev->dev_config);
+
+
+ return USBD_OK;
+}
+
+
+
+
+/**
+* @brief USBD_LL_Reset
+* Handle Reset event
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_SetSpeed(USBD_HandleTypeDef *pdev, USBD_SpeedTypeDef speed)
+{
+ pdev->dev_speed = speed;
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_Suspend
+* Handle Suspend event
+* @param pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_Suspend(USBD_HandleTypeDef *pdev)
+{
+ pdev->dev_old_state = pdev->dev_state;
+ pdev->dev_state = USBD_STATE_SUSPENDED;
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_Resume
+* Handle Resume event
+* @param pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_Resume(USBD_HandleTypeDef *pdev)
+{
+ pdev->dev_state = pdev->dev_old_state;
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_SOF
+* Handle SOF event
+* @param pdev: device instance
+* @retval status
+*/
+
+USBD_StatusTypeDef USBD_LL_SOF(USBD_HandleTypeDef *pdev)
+{
+ if(pdev->dev_state == USBD_STATE_CONFIGURED)
+ {
+ if(pdev->pClass->SOF != NULL)
+ {
+ pdev->pClass->SOF(pdev);
+ }
+ }
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_IsoINIncomplete
+* Handle iso in incomplete event
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_IsoINIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum)
+{
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_IsoOUTIncomplete
+* Handle iso out incomplete event
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_IsoOUTIncomplete(USBD_HandleTypeDef *pdev, uint8_t epnum)
+{
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_DevConnected
+* Handle device connection event
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DevConnected(USBD_HandleTypeDef *pdev)
+{
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_DevDisconnected
+* Handle device disconnection event
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_LL_DevDisconnected(USBD_HandleTypeDef *pdev)
+{
+ /* Free Class Resources */
+ pdev->dev_state = USBD_STATE_DEFAULT;
+ pdev->pClass->DeInit(pdev, pdev->dev_config);
+
+ return USBD_OK;
+}
+/**
+* @}
+*/
+
+
+/**
+* @}
+*/
+
+
+/**
+* @}
+*/
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/firmware/Src/usbd_ctlreq.c b/firmware/Src/usbd_ctlreq.c
new file mode 100644
index 0000000..49330c6
--- /dev/null
+++ b/firmware/Src/usbd_ctlreq.c
@@ -0,0 +1,782 @@
+/**
+ ******************************************************************************
+ * @file usbd_req.c
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief This file provides the standard USB requests following chapter 9.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_ctlreq.h"
+#include "usbd_ioreq.h"
+
+
+/** @addtogroup STM32_USBD_STATE_DEVICE_LIBRARY
+ * @{
+ */
+
+
+/** @defgroup USBD_REQ
+ * @brief USB standard requests module
+ * @{
+ */
+
+/** @defgroup USBD_REQ_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_REQ_Private_Defines
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_REQ_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_REQ_Private_Variables
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_REQ_Private_FunctionPrototypes
+ * @{
+ */
+static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static void USBD_SetAddress(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static void USBD_SetConfig(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static void USBD_GetConfig(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static void USBD_GetStatus(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static void USBD_SetFeature(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static void USBD_ClrFeature(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req);
+
+static uint8_t USBD_GetLen(uint8_t *buf);
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_REQ_Private_Functions
+ * @{
+ */
+
+
+/**
+* @brief USBD_StdDevReq
+* Handle standard usb device requests
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+USBD_StatusTypeDef USBD_StdDevReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req)
+{
+ USBD_StatusTypeDef ret = USBD_OK;
+
+ switch (req->bRequest)
+ {
+ case USB_REQ_GET_DESCRIPTOR:
+
+ USBD_GetDescriptor (pdev, req) ;
+ break;
+
+ case USB_REQ_SET_ADDRESS:
+ USBD_SetAddress(pdev, req);
+ break;
+
+ case USB_REQ_SET_CONFIGURATION:
+ USBD_SetConfig (pdev , req);
+ break;
+
+ case USB_REQ_GET_CONFIGURATION:
+ USBD_GetConfig (pdev , req);
+ break;
+
+ case USB_REQ_GET_STATUS:
+ USBD_GetStatus (pdev , req);
+ break;
+
+
+ case USB_REQ_SET_FEATURE:
+ USBD_SetFeature (pdev , req);
+ break;
+
+ case USB_REQ_CLEAR_FEATURE:
+ USBD_ClrFeature (pdev , req);
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+
+ return ret;
+}
+
+/**
+* @brief USBD_StdItfReq
+* Handle standard usb interface requests
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+USBD_StatusTypeDef USBD_StdItfReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req)
+{
+ USBD_StatusTypeDef ret = USBD_OK;
+
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_CONFIGURED:
+
+ if (LOBYTE(req->wIndex) <= USBD_MAX_NUM_INTERFACES)
+ {
+ pdev->pClass->Setup (pdev, req);
+
+ if((req->wLength == 0)&& (ret == USBD_OK))
+ {
+ USBD_CtlSendStatus(pdev);
+ }
+ }
+ else
+ {
+ USBD_CtlError(pdev , req);
+ }
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_StdEPReq
+* Handle standard usb endpoint requests
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+USBD_StatusTypeDef USBD_StdEPReq (USBD_HandleTypeDef *pdev , USBD_SetupReqTypedef *req)
+{
+
+ uint8_t ep_addr;
+ USBD_StatusTypeDef ret = USBD_OK;
+ USBD_EndpointTypeDef *pep;
+ ep_addr = LOBYTE(req->wIndex);
+
+ /* Check if it is a class request */
+ if ((req->bmRequest & 0x60) == 0x20)
+ {
+ pdev->pClass->Setup (pdev, req);
+
+ return USBD_OK;
+ }
+
+ switch (req->bRequest)
+ {
+
+ case USB_REQ_SET_FEATURE :
+
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_ADDRESSED:
+ if ((ep_addr != 0x00) && (ep_addr != 0x80))
+ {
+ USBD_LL_StallEP(pdev , ep_addr);
+ }
+ break;
+
+ case USBD_STATE_CONFIGURED:
+ if (req->wValue == USB_FEATURE_EP_HALT)
+ {
+ if ((ep_addr != 0x00) && (ep_addr != 0x80))
+ {
+ USBD_LL_StallEP(pdev , ep_addr);
+
+ }
+ }
+ pdev->pClass->Setup (pdev, req);
+ USBD_CtlSendStatus(pdev);
+
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+ break;
+
+ case USB_REQ_CLEAR_FEATURE :
+
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_ADDRESSED:
+ if ((ep_addr != 0x00) && (ep_addr != 0x80))
+ {
+ USBD_LL_StallEP(pdev , ep_addr);
+ }
+ break;
+
+ case USBD_STATE_CONFIGURED:
+ if (req->wValue == USB_FEATURE_EP_HALT)
+ {
+ if ((ep_addr & 0x7F) != 0x00)
+ {
+ USBD_LL_ClearStallEP(pdev , ep_addr);
+ pdev->pClass->Setup (pdev, req);
+ }
+ USBD_CtlSendStatus(pdev);
+ }
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+ break;
+
+ case USB_REQ_GET_STATUS:
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_ADDRESSED:
+ if ((ep_addr & 0x7F) != 0x00)
+ {
+ USBD_LL_StallEP(pdev , ep_addr);
+ }
+ break;
+
+ case USBD_STATE_CONFIGURED:
+ pep = ((ep_addr & 0x80) == 0x80) ? &pdev->ep_in[ep_addr & 0x7F]:\
+ &pdev->ep_out[ep_addr & 0x7F];
+ if(USBD_LL_IsStallEP(pdev, ep_addr))
+ {
+ pep->status = 0x0001;
+ }
+ else
+ {
+ pep->status = 0x0000;
+ }
+
+ USBD_CtlSendData (pdev,
+ (uint8_t *)&pep->status,
+ 2);
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+ return ret;
+}
+/**
+* @brief USBD_GetDescriptor
+* Handle Get Descriptor requests
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_GetDescriptor(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+ uint16_t len;
+ uint8_t *pbuf;
+
+
+ switch (req->wValue >> 8)
+ {
+#if (USBD_LPM_ENABLED == 1)
+ case USB_DESC_TYPE_BOS:
+ pbuf = pdev->pDesc->GetBOSDescriptor(pdev->dev_speed, &len);
+ break;
+#endif
+ case USB_DESC_TYPE_DEVICE:
+ pbuf = pdev->pDesc->GetDeviceDescriptor(pdev->dev_speed, &len);
+ break;
+
+ case USB_DESC_TYPE_CONFIGURATION:
+ if(pdev->dev_speed == USBD_SPEED_HIGH )
+ {
+ pbuf = (uint8_t *)pdev->pClass->GetHSConfigDescriptor(&len);
+ pbuf[1] = USB_DESC_TYPE_CONFIGURATION;
+ }
+ else
+ {
+ pbuf = (uint8_t *)pdev->pClass->GetFSConfigDescriptor(&len);
+ pbuf[1] = USB_DESC_TYPE_CONFIGURATION;
+ }
+ break;
+
+ case USB_DESC_TYPE_STRING:
+ switch ((uint8_t)(req->wValue))
+ {
+ case USBD_IDX_LANGID_STR:
+ pbuf = pdev->pDesc->GetLangIDStrDescriptor(pdev->dev_speed, &len);
+ break;
+
+ case USBD_IDX_MFC_STR:
+ pbuf = pdev->pDesc->GetManufacturerStrDescriptor(pdev->dev_speed, &len);
+ break;
+
+ case USBD_IDX_PRODUCT_STR:
+ pbuf = pdev->pDesc->GetProductStrDescriptor(pdev->dev_speed, &len);
+ break;
+
+ case USBD_IDX_SERIAL_STR:
+ pbuf = pdev->pDesc->GetSerialStrDescriptor(pdev->dev_speed, &len);
+ break;
+
+ case USBD_IDX_CONFIG_STR:
+ pbuf = pdev->pDesc->GetConfigurationStrDescriptor(pdev->dev_speed, &len);
+ break;
+
+ case USBD_IDX_INTERFACE_STR:
+ pbuf = pdev->pDesc->GetInterfaceStrDescriptor(pdev->dev_speed, &len);
+ break;
+
+ default:
+#if (USBD_SUPPORT_USER_STRING == 1)
+ pbuf = pdev->pClass->GetUsrStrDescriptor(pdev, (req->wValue) , &len);
+ break;
+#else
+ USBD_CtlError(pdev , req);
+ return;
+#endif
+ }
+ break;
+ case USB_DESC_TYPE_DEVICE_QUALIFIER:
+
+ if(pdev->dev_speed == USBD_SPEED_HIGH )
+ {
+ pbuf = (uint8_t *)pdev->pClass->GetDeviceQualifierDescriptor(&len);
+ break;
+ }
+ else
+ {
+ USBD_CtlError(pdev , req);
+ return;
+ }
+
+ case USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION:
+ if(pdev->dev_speed == USBD_SPEED_HIGH )
+ {
+ pbuf = (uint8_t *)pdev->pClass->GetOtherSpeedConfigDescriptor(&len);
+ pbuf[1] = USB_DESC_TYPE_OTHER_SPEED_CONFIGURATION;
+ break;
+ }
+ else
+ {
+ USBD_CtlError(pdev , req);
+ return;
+ }
+
+ default:
+ USBD_CtlError(pdev , req);
+ return;
+ }
+
+ if((len != 0)&& (req->wLength != 0))
+ {
+
+ len = MIN(len , req->wLength);
+
+ USBD_CtlSendData (pdev,
+ pbuf,
+ len);
+ }
+
+}
+
+/**
+* @brief USBD_SetAddress
+* Set device address
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_SetAddress(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+ uint8_t dev_addr;
+
+ if ((req->wIndex == 0) && (req->wLength == 0))
+ {
+ dev_addr = (uint8_t)(req->wValue) & 0x7F;
+
+ if (pdev->dev_state == USBD_STATE_CONFIGURED)
+ {
+ USBD_CtlError(pdev , req);
+ }
+ else
+ {
+ pdev->dev_address = dev_addr;
+ USBD_LL_SetUSBAddress(pdev, dev_addr);
+ USBD_CtlSendStatus(pdev);
+
+ if (dev_addr != 0)
+ {
+ pdev->dev_state = USBD_STATE_ADDRESSED;
+ }
+ else
+ {
+ pdev->dev_state = USBD_STATE_DEFAULT;
+ }
+ }
+ }
+ else
+ {
+ USBD_CtlError(pdev , req);
+ }
+}
+
+/**
+* @brief USBD_SetConfig
+* Handle Set device configuration request
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_SetConfig(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+
+ static uint8_t cfgidx;
+
+ cfgidx = (uint8_t)(req->wValue);
+
+ if (cfgidx > USBD_MAX_NUM_CONFIGURATION )
+ {
+ USBD_CtlError(pdev , req);
+ }
+ else
+ {
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_ADDRESSED:
+ if (cfgidx)
+ {
+ pdev->dev_config = cfgidx;
+ pdev->dev_state = USBD_STATE_CONFIGURED;
+ if(USBD_SetClassConfig(pdev , cfgidx) == USBD_FAIL)
+ {
+ USBD_CtlError(pdev , req);
+ return;
+ }
+ USBD_CtlSendStatus(pdev);
+ }
+ else
+ {
+ USBD_CtlSendStatus(pdev);
+ }
+ break;
+
+ case USBD_STATE_CONFIGURED:
+ if (cfgidx == 0)
+ {
+ pdev->dev_state = USBD_STATE_ADDRESSED;
+ pdev->dev_config = cfgidx;
+ USBD_ClrClassConfig(pdev , cfgidx);
+ USBD_CtlSendStatus(pdev);
+
+ }
+ else if (cfgidx != pdev->dev_config)
+ {
+ /* Clear old configuration */
+ USBD_ClrClassConfig(pdev , pdev->dev_config);
+
+ /* set new configuration */
+ pdev->dev_config = cfgidx;
+ if(USBD_SetClassConfig(pdev , cfgidx) == USBD_FAIL)
+ {
+ USBD_CtlError(pdev , req);
+ return;
+ }
+ USBD_CtlSendStatus(pdev);
+ }
+ else
+ {
+ USBD_CtlSendStatus(pdev);
+ }
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+ }
+}
+
+/**
+* @brief USBD_GetConfig
+* Handle Get device configuration request
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_GetConfig(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+
+ if (req->wLength != 1)
+ {
+ USBD_CtlError(pdev , req);
+ }
+ else
+ {
+ switch (pdev->dev_state )
+ {
+ case USBD_STATE_ADDRESSED:
+ pdev->dev_default_config = 0;
+ USBD_CtlSendData (pdev,
+ (uint8_t *)&pdev->dev_default_config,
+ 1);
+ break;
+
+ case USBD_STATE_CONFIGURED:
+
+ USBD_CtlSendData (pdev,
+ (uint8_t *)&pdev->dev_config,
+ 1);
+ break;
+
+ default:
+ USBD_CtlError(pdev , req);
+ break;
+ }
+ }
+}
+
+/**
+* @brief USBD_GetStatus
+* Handle Get Status request
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_GetStatus(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+
+
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_ADDRESSED:
+ case USBD_STATE_CONFIGURED:
+
+#if ( USBD_SELF_POWERED == 1)
+ pdev->dev_config_status = USB_CONFIG_SELF_POWERED;
+#else
+ pdev->dev_config_status = 0;
+#endif
+
+ if (pdev->dev_remote_wakeup)
+ {
+ pdev->dev_config_status |= USB_CONFIG_REMOTE_WAKEUP;
+ }
+
+ USBD_CtlSendData (pdev,
+ (uint8_t *)& pdev->dev_config_status,
+ 2);
+ break;
+
+ default :
+ USBD_CtlError(pdev , req);
+ break;
+ }
+}
+
+
+/**
+* @brief USBD_SetFeature
+* Handle Set device feature request
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_SetFeature(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+
+ if (req->wValue == USB_FEATURE_REMOTE_WAKEUP)
+ {
+ pdev->dev_remote_wakeup = 1;
+ pdev->pClass->Setup (pdev, req);
+ USBD_CtlSendStatus(pdev);
+ }
+
+}
+
+
+/**
+* @brief USBD_ClrFeature
+* Handle clear device feature request
+* @param pdev: device instance
+* @param req: usb request
+* @retval status
+*/
+static void USBD_ClrFeature(USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+ switch (pdev->dev_state)
+ {
+ case USBD_STATE_ADDRESSED:
+ case USBD_STATE_CONFIGURED:
+ if (req->wValue == USB_FEATURE_REMOTE_WAKEUP)
+ {
+ pdev->dev_remote_wakeup = 0;
+ pdev->pClass->Setup (pdev, req);
+ USBD_CtlSendStatus(pdev);
+ }
+ break;
+
+ default :
+ USBD_CtlError(pdev , req);
+ break;
+ }
+}
+
+/**
+* @brief USBD_ParseSetupRequest
+* Copy buffer into setup structure
+* @param pdev: device instance
+* @param req: usb request
+* @retval None
+*/
+
+void USBD_ParseSetupRequest(USBD_SetupReqTypedef *req, uint8_t *pdata)
+{
+ req->bmRequest = *(uint8_t *) (pdata);
+ req->bRequest = *(uint8_t *) (pdata + 1);
+ req->wValue = SWAPBYTE (pdata + 2);
+ req->wIndex = SWAPBYTE (pdata + 4);
+ req->wLength = SWAPBYTE (pdata + 6);
+
+}
+
+/**
+* @brief USBD_CtlError
+* Handle USB low level Error
+* @param pdev: device instance
+* @param req: usb request
+* @retval None
+*/
+
+void USBD_CtlError( USBD_HandleTypeDef *pdev ,
+ USBD_SetupReqTypedef *req)
+{
+ USBD_LL_StallEP(pdev , 0x80);
+ USBD_LL_StallEP(pdev , 0);
+}
+
+
+/**
+ * @brief USBD_GetString
+ * Convert Ascii string into unicode one
+ * @param desc : descriptor buffer
+ * @param unicode : Formatted string buffer (unicode)
+ * @param len : descriptor length
+ * @retval None
+ */
+void USBD_GetString(uint8_t *desc, uint8_t *unicode, uint16_t *len)
+{
+ uint8_t idx = 0;
+
+ if (desc != NULL)
+ {
+ *len = USBD_GetLen(desc) * 2 + 2;
+ unicode[idx++] = *len;
+ unicode[idx++] = USB_DESC_TYPE_STRING;
+
+ while (*desc != '\0')
+ {
+ unicode[idx++] = *desc++;
+ unicode[idx++] = 0x00;
+ }
+ }
+}
+
+/**
+ * @brief USBD_GetLen
+ * return the string length
+ * @param buf : pointer to the ascii string buffer
+ * @retval string length
+ */
+static uint8_t USBD_GetLen(uint8_t *buf)
+{
+ uint8_t len = 0;
+
+ while (*buf != '\0')
+ {
+ len++;
+ buf++;
+ }
+
+ return len;
+}
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usbd_desc.c b/firmware/Src/usbd_desc.c
new file mode 100644
index 0000000..93dfb10
--- /dev/null
+++ b/firmware/Src/usbd_desc.c
@@ -0,0 +1,393 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_desc.c
+ * @version : v2.0_Cube
+ * @brief : This file implements the USB device descriptors.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2019 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_conf.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @addtogroup USBD_DESC
+ * @{
+ */
+
+/** @defgroup USBD_DESC_Private_TypesDefinitions USBD_DESC_Private_TypesDefinitions
+ * @brief Private types.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_TYPES */
+
+/* USER CODE END PRIVATE_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Defines USBD_DESC_Private_Defines
+ * @brief Private defines.
+ * @{
+ */
+
+#define USBD_VID 1155
+#define USBD_LANGID_STRING 1033
+#define USBD_MANUFACTURER_STRING "STMicroelectronics"
+#define USBD_PID_FS 22336
+#define USBD_PRODUCT_STRING_FS "STM32 Virtual ComPort"
+#define USBD_CONFIGURATION_STRING_FS "CDC Config"
+#define USBD_INTERFACE_STRING_FS "CDC Interface"
+
+/* USER CODE BEGIN PRIVATE_DEFINES */
+
+/* USER CODE END PRIVATE_DEFINES */
+
+/**
+ * @}
+ */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/** @defgroup USBD_DESC_Private_Macros USBD_DESC_Private_Macros
+ * @brief Private macros.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_MACRO */
+
+/* USER CODE END PRIVATE_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
+ * @brief Private functions declaration.
+ * @{
+ */
+
+static void Get_SerialNum(void);
+static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len);
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
+ * @brief Private functions declaration for FS.
+ * @{
+ */
+
+uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+
+#ifdef USBD_SUPPORT_USER_STRING_DESC
+uint8_t * USBD_FS_USRStringDesc(USBD_SpeedTypeDef speed, uint8_t idx, uint16_t *length);
+#endif /* USBD_SUPPORT_USER_STRING_DESC */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
+ * @brief Private variables.
+ * @{
+ */
+
+USBD_DescriptorsTypeDef FS_Desc =
+{
+ USBD_FS_DeviceDescriptor
+, USBD_FS_LangIDStrDescriptor
+, USBD_FS_ManufacturerStrDescriptor
+, USBD_FS_ProductStrDescriptor
+, USBD_FS_SerialStrDescriptor
+, USBD_FS_ConfigStrDescriptor
+, USBD_FS_InterfaceStrDescriptor
+};
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+ #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+/** USB standard device descriptor. */
+__ALIGN_BEGIN uint8_t USBD_FS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
+{
+ 0x12, /*bLength */
+ USB_DESC_TYPE_DEVICE, /*bDescriptorType*/
+ 0x00, /*bcdUSB */
+ 0x02,
+ 0x02, /*bDeviceClass*/
+ 0x02, /*bDeviceSubClass*/
+ 0x00, /*bDeviceProtocol*/
+ USB_MAX_EP0_SIZE, /*bMaxPacketSize*/
+ LOBYTE(USBD_VID), /*idVendor*/
+ HIBYTE(USBD_VID), /*idVendor*/
+ LOBYTE(USBD_PID_FS), /*idProduct*/
+ HIBYTE(USBD_PID_FS), /*idProduct*/
+ 0x00, /*bcdDevice rel. 2.00*/
+ 0x02,
+ USBD_IDX_MFC_STR, /*Index of manufacturer string*/
+ USBD_IDX_PRODUCT_STR, /*Index of product string*/
+ USBD_IDX_SERIAL_STR, /*Index of serial number string*/
+ USBD_MAX_NUM_CONFIGURATION /*bNumConfigurations*/
+};
+
+/* USB_DeviceDescriptor */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
+ * @brief Private variables.
+ * @{
+ */
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+ #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+
+/** USB lang indentifier descriptor. */
+__ALIGN_BEGIN uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END =
+{
+ USB_LEN_LANGID_STR_DESC,
+ USB_DESC_TYPE_STRING,
+ LOBYTE(USBD_LANGID_STRING),
+ HIBYTE(USBD_LANGID_STRING)
+};
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+ #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+/* Internal string descriptor. */
+__ALIGN_BEGIN uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
+
+#if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+#endif
+__ALIGN_BEGIN uint8_t USBD_StringSerial[USB_SIZ_STRING_SERIAL] __ALIGN_END = {
+ USB_SIZ_STRING_SERIAL,
+ USB_DESC_TYPE_STRING,
+};
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Functions USBD_DESC_Private_Functions
+ * @brief Private functions.
+ * @{
+ */
+
+/**
+ * @brief Return the device descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ *length = sizeof(USBD_FS_DeviceDesc);
+ return USBD_FS_DeviceDesc;
+}
+
+/**
+ * @brief Return the LangID string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ *length = sizeof(USBD_LangIDDesc);
+ return USBD_LangIDDesc;
+}
+
+/**
+ * @brief Return the product string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ if(speed == 0)
+ {
+ USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+ }
+ else
+ {
+ USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+ }
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Return the manufacturer string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Return the serial number string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ *length = USB_SIZ_STRING_SERIAL;
+
+ /* Update the serial number string descriptor with the data from the unique
+ * ID */
+ Get_SerialNum();
+
+ return (uint8_t *) USBD_StringSerial;
+}
+
+/**
+ * @brief Return the configuration string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ if(speed == USBD_SPEED_HIGH)
+ {
+ USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+ }
+ else
+ {
+ USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+ }
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Return the interface string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ if(speed == 0)
+ {
+ USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+ }
+ else
+ {
+ USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+ }
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Create the serial number string descriptor
+ * @param None
+ * @retval None
+ */
+static void Get_SerialNum(void)
+{
+ uint32_t deviceserial0, deviceserial1, deviceserial2;
+
+ deviceserial0 = *(uint32_t *) DEVICE_ID1;
+ deviceserial1 = *(uint32_t *) DEVICE_ID2;
+ deviceserial2 = *(uint32_t *) DEVICE_ID3;
+
+ deviceserial0 += deviceserial2;
+
+ if (deviceserial0 != 0)
+ {
+ IntToUnicode(deviceserial0, &USBD_StringSerial[2], 8);
+ IntToUnicode(deviceserial1, &USBD_StringSerial[18], 4);
+ }
+}
+
+/**
+ * @brief Convert Hex 32Bits value into char
+ * @param value: value to convert
+ * @param pbuf: pointer to the buffer
+ * @param len: buffer length
+ * @retval None
+ */
+static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len)
+{
+ uint8_t idx = 0;
+
+ for (idx = 0; idx < len; idx++)
+ {
+ if (((value >> 28)) < 0xA)
+ {
+ pbuf[2 * idx] = (value >> 28) + '0';
+ }
+ else
+ {
+ pbuf[2 * idx] = (value >> 28) + 'A' - 10;
+ }
+
+ value = value << 4;
+
+ pbuf[2 * idx + 1] = 0;
+ }
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/Src/usbd_ioreq.c b/firmware/Src/usbd_ioreq.c
new file mode 100644
index 0000000..093afad
--- /dev/null
+++ b/firmware/Src/usbd_ioreq.c
@@ -0,0 +1,236 @@
+/**
+ ******************************************************************************
+ * @file usbd_ioreq.c
+ * @author MCD Application Team
+ * @version V2.4.2
+ * @date 11-December-2015
+ * @brief This file provides the IO requests APIs for control endpoints.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics
+ *
+ * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.st.com/software_license_agreement_liberty_v2
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_ioreq.h"
+
+/** @addtogroup STM32_USB_DEVICE_LIBRARY
+ * @{
+ */
+
+
+/** @defgroup USBD_IOREQ
+ * @brief control I/O requests module
+ * @{
+ */
+
+/** @defgroup USBD_IOREQ_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_IOREQ_Private_Defines
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_IOREQ_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_IOREQ_Private_Variables
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_IOREQ_Private_FunctionPrototypes
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_IOREQ_Private_Functions
+ * @{
+ */
+
+/**
+* @brief USBD_CtlSendData
+* send data on the ctl pipe
+* @param pdev: device instance
+* @param buff: pointer to data buffer
+* @param len: length of data to be sent
+* @retval status
+*/
+USBD_StatusTypeDef USBD_CtlSendData (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len)
+{
+ /* Set EP0 State */
+ pdev->ep0_state = USBD_EP0_DATA_IN;
+ pdev->ep_in[0].total_length = len;
+ pdev->ep_in[0].rem_length = len;
+ /* Start the transfer */
+ USBD_LL_Transmit (pdev, 0x00, pbuf, len);
+
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_CtlContinueSendData
+* continue sending data on the ctl pipe
+* @param pdev: device instance
+* @param buff: pointer to data buffer
+* @param len: length of data to be sent
+* @retval status
+*/
+USBD_StatusTypeDef USBD_CtlContinueSendData (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len)
+{
+ /* Start the next transfer */
+ USBD_LL_Transmit (pdev, 0x00, pbuf, len);
+
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_CtlPrepareRx
+* receive data on the ctl pipe
+* @param pdev: device instance
+* @param buff: pointer to data buffer
+* @param len: length of data to be received
+* @retval status
+*/
+USBD_StatusTypeDef USBD_CtlPrepareRx (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len)
+{
+ /* Set EP0 State */
+ pdev->ep0_state = USBD_EP0_DATA_OUT;
+ pdev->ep_out[0].total_length = len;
+ pdev->ep_out[0].rem_length = len;
+ /* Start the transfer */
+ USBD_LL_PrepareReceive (pdev,
+ 0,
+ pbuf,
+ len);
+
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_CtlContinueRx
+* continue receive data on the ctl pipe
+* @param pdev: device instance
+* @param buff: pointer to data buffer
+* @param len: length of data to be received
+* @retval status
+*/
+USBD_StatusTypeDef USBD_CtlContinueRx (USBD_HandleTypeDef *pdev,
+ uint8_t *pbuf,
+ uint16_t len)
+{
+
+ USBD_LL_PrepareReceive (pdev,
+ 0,
+ pbuf,
+ len);
+ return USBD_OK;
+}
+/**
+* @brief USBD_CtlSendStatus
+* send zero lzngth packet on the ctl pipe
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_CtlSendStatus (USBD_HandleTypeDef *pdev)
+{
+
+ /* Set EP0 State */
+ pdev->ep0_state = USBD_EP0_STATUS_IN;
+
+ /* Start the transfer */
+ USBD_LL_Transmit (pdev, 0x00, NULL, 0);
+
+ return USBD_OK;
+}
+
+/**
+* @brief USBD_CtlReceiveStatus
+* receive zero lzngth packet on the ctl pipe
+* @param pdev: device instance
+* @retval status
+*/
+USBD_StatusTypeDef USBD_CtlReceiveStatus (USBD_HandleTypeDef *pdev)
+{
+ /* Set EP0 State */
+ pdev->ep0_state = USBD_EP0_STATUS_OUT;
+
+ /* Start the transfer */
+ USBD_LL_PrepareReceive ( pdev,
+ 0,
+ NULL,
+ 0);
+
+ return USBD_OK;
+}
+
+
+/**
+* @brief USBD_GetRxCount
+* returns the received data length
+* @param pdev: device instance
+* @param ep_addr: endpoint address
+* @retval Rx Data blength
+*/
+uint16_t USBD_GetRxCount (USBD_HandleTypeDef *pdev , uint8_t ep_addr)
+{
+ return USBD_LL_GetRxDataSize(pdev, ep_addr);
+}
+
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/platformio.ini b/firmware/platformio.ini
new file mode 100644
index 0000000..c112869
--- /dev/null
+++ b/firmware/platformio.ini
@@ -0,0 +1,6 @@
+[platformio]
+
+[env:genericSTM32F103C8]
+platform = ststm32
+board=genericSTM32F103C8
+framework = stm32cube