julixau/audioMux
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audioMux/firmware/Src/main.c

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
* All rights reserved.</center></h2>
*
* 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(5, SW3) \
a(4, SW2) \
a(3, SW5) \
a(2, SW6) \
a(1, SW4) \
a(0, SW7)
#define OUTPUT_LED(a) \
a(5, SW5) \
a(4, SW2) \
a(3, SW3) \
a(2, SW6) \
a(1, SW4) \
a(0, 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
}
struct ui_state {
uint8_t oldchannel;
uint8_t mute;
} ui_state = {
.oldchannel = -1,
.mute = 0,
};
void set_input(uint8_t channel) {
if (ui_state.oldchannel == channel || channel >= 6)
return;
set_input_led(ui_state.oldchannel, 0);
// do not disturb the mute mode
if (!ui_state.mute)
{
set_input_led(channel, 1);
// invert bd inputs to match the numbers on the case
bd_set_input(&hi2c1, 5-channel);
}
ui_state.oldchannel = channel;
printf("C%d\n", channel);
}
void set_mute(uint8_t mute) {
if(ui_state.mute == mute)
return;
if (0 == (ui_state.mute = mute)) {
// hack to make reactivation of the last channel easier
uint8_t old_input = ui_state.oldchannel;
ui_state.oldchannel = -1;
set_input(old_input);
HAL_GPIO_WritePin(USER_LED_GPIO_Port, USER_LED_Pin, 0);
}
else {
HAL_GPIO_WritePin(USER_LED_GPIO_Port, USER_LED_Pin, 1);
set_input_led(ui_state.oldchannel, 0);
bd_set_input(&hi2c1, BD_INPUT_MUTE);
}
printf("M%d\n", ui_state.mute?1:0);
}
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 = 0;
// reset set input
set_input(input);
set_attenuation(0,0);
int count = 0;
int button_timeout = 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 (6 > input) {
set_input(input);
if (100 < ++count) {
count = 0;
button_timeout++;
}
//printf("%d\n", count);
if (1000 < button_timeout) {
// long press, toggle mute
set_mute(!ui_state.mute);
button_timeout = 0;
}
} else {
count = 0;
button_timeout = 0;
}
// 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****/
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