diff --git a/firmware/audioMux.ioc b/firmware/audioMux.ioc
index 4705d79..c2a6cd2 100644
--- a/firmware/audioMux.ioc
+++ b/firmware/audioMux.ioc
@@ -7,34 +7,58 @@ Mcu.IP1=NVIC
 Mcu.IP2=RCC
 Mcu.IP3=SYS
 Mcu.IP4=USB
-Mcu.IPNb=5
+Mcu.IP5=USB_DEVICE
+Mcu.IPNb=6
 Mcu.Name=STM32F103C(8-B)Tx
 Mcu.Package=LQFP48
 Mcu.Pin0=PD0-OSC_IN
 Mcu.Pin1=PD1-OSC_OUT
-Mcu.Pin2=PA11
-Mcu.Pin3=PA12
-Mcu.Pin4=PA13
-Mcu.Pin5=PA14
-Mcu.Pin6=PB6
-Mcu.Pin7=PB7
-Mcu.Pin8=VP_SYS_VS_Systick
-Mcu.PinsNb=9
+Mcu.Pin10=PB1
+Mcu.Pin11=PB2
+Mcu.Pin12=PA8
+Mcu.Pin13=PA9
+Mcu.Pin14=PA10
+Mcu.Pin15=PA11
+Mcu.Pin16=PA12
+Mcu.Pin17=PA13
+Mcu.Pin18=PA14
+Mcu.Pin19=PB6
+Mcu.Pin2=PA1
+Mcu.Pin20=PB7
+Mcu.Pin21=VP_SYS_VS_Systick
+Mcu.Pin22=VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS
+Mcu.Pin3=PA2
+Mcu.Pin4=PA3
+Mcu.Pin5=PA4
+Mcu.Pin6=PA5
+Mcu.Pin7=PA6
+Mcu.Pin8=PA7
+Mcu.Pin9=PB0
+Mcu.PinsNb=23
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32F103C8Tx
-MxCube.Version=5.0.1
-MxDb.Version=DB.5.0.1
-NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false
+MxCube.Version=5.2.0
+MxDb.Version=DB.5.0.20
+NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false
 NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
-NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.SysTick_IRQn=true\:0\:0\:false\:false\:true\:false
-NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false
+NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+NVIC.SysTick_IRQn=true\:0\:0\:false\:false\:true\:false\:true
+NVIC.USB_LP_CAN1_RX0_IRQn=true\:0\:0\:false\:false\:true\:false\:true
+NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false
+PA1.GPIOParameters=GPIO_Label
+PA1.GPIO_Label=SW7_LED
+PA1.Locked=true
+PA1.Signal=GPIO_Output
+PA10.GPIOParameters=GPIO_Label
+PA10.GPIO_Label=USER_LED
+PA10.Locked=true
+PA10.Signal=GPIO_Output
 PA11.Mode=Device
 PA11.Signal=USB_DM
 PA12.Mode=Device
@@ -43,6 +67,56 @@ PA13.Mode=Serial_Wire
 PA13.Signal=SYS_JTMS-SWDIO
 PA14.Mode=Serial_Wire
 PA14.Signal=SYS_JTCK-SWCLK
+PA2.GPIOParameters=GPIO_PuPd,GPIO_Label
+PA2.GPIO_Label=SW7
+PA2.GPIO_PuPd=GPIO_PULLUP
+PA2.Locked=true
+PA2.Signal=GPIO_Input
+PA3.GPIOParameters=GPIO_Label
+PA3.GPIO_Label=SW4_LED
+PA3.Locked=true
+PA3.Signal=GPIO_Output
+PA4.GPIOParameters=GPIO_PuPd,GPIO_Label
+PA4.GPIO_Label=SW4
+PA4.GPIO_PuPd=GPIO_PULLUP
+PA4.Locked=true
+PA4.Signal=GPIO_Input
+PA5.GPIOParameters=GPIO_Label
+PA5.GPIO_Label=SW6_LED
+PA5.Locked=true
+PA5.Signal=GPIO_Output
+PA6.GPIOParameters=GPIO_PuPd,GPIO_Label
+PA6.GPIO_Label=SW6
+PA6.GPIO_PuPd=GPIO_PULLUP
+PA6.Locked=true
+PA6.Signal=GPIO_Input
+PA7.GPIOParameters=GPIO_Label
+PA7.GPIO_Label=SW3_LED
+PA7.Locked=true
+PA7.Signal=GPIO_Output
+PA8.GPIOParameters=GPIO_PuPd,GPIO_Label
+PA8.GPIO_Label=SW3
+PA8.GPIO_PuPd=GPIO_PULLUP
+PA8.Locked=true
+PA8.Signal=GPIO_Input
+PA9.GPIOParameters=GPIO_Label
+PA9.GPIO_Label=SW5_LED
+PA9.Locked=true
+PA9.Signal=GPIO_Output
+PB0.GPIOParameters=GPIO_PuPd,GPIO_Label
+PB0.GPIO_Label=SW5
+PB0.GPIO_PuPd=GPIO_PULLUP
+PB0.Locked=true
+PB0.Signal=GPIO_Input
+PB1.GPIOParameters=GPIO_PuPd,GPIO_Label
+PB1.GPIO_Label=SW2
+PB1.GPIO_PuPd=GPIO_PULLUP
+PB1.Locked=true
+PB1.Signal=GPIO_Input
+PB2.GPIOParameters=GPIO_Label
+PB2.GPIO_Label=SW2_LED
+PB2.Locked=true
+PB2.Signal=GPIO_Output
 PB6.Mode=I2C
 PB6.Signal=I2C1_SCL
 PB7.Mode=I2C
@@ -64,7 +138,7 @@ ProjectManager.AskForMigrate=true
 ProjectManager.BackupPrevious=false
 ProjectManager.CompilerOptimize=6
 ProjectManager.ComputerToolchain=false
-ProjectManager.CoupleFile=false
+ProjectManager.CoupleFile=true
 ProjectManager.CustomerFirmwarePackage=
 ProjectManager.DefaultFWLocation=true
 ProjectManager.DeletePrevious=true
@@ -75,26 +149,45 @@ ProjectManager.HalAssertFull=false
 ProjectManager.HeapSize=0x200
 ProjectManager.KeepUserCode=true
 ProjectManager.LastFirmware=true
-ProjectManager.LibraryCopy=0
+ProjectManager.LibraryCopy=1
 ProjectManager.MainLocation=Src
 ProjectManager.NoMain=false
-ProjectManager.PreviousToolchain=
+ProjectManager.PreviousToolchain=SW4STM32
 ProjectManager.ProjectBuild=false
 ProjectManager.ProjectFileName=audioMux.ioc
 ProjectManager.ProjectName=audioMux
 ProjectManager.StackSize=0x400
-ProjectManager.TargetToolchain=EWARM V8
+ProjectManager.TargetToolchain=SW4STM32
 ProjectManager.ToolChainLocation=
-ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_I2C1_Init-I2C1-false-HAL-true,4-MX_USB_PCD_Init-USB-false-HAL-true
-RCC.APB1Freq_Value=8000000
-RCC.APB2Freq_Value=8000000
+ProjectManager.UnderRoot=true
+ProjectManager.functionlistsort=1-MX_GPIO_Init-GPIO-false-HAL-true,2-SystemClock_Config-RCC-false-HAL-false,3-MX_I2C1_Init-I2C1-false-HAL-true,4-MX_USB_DEVICE_Init-USB_DEVICE-false-HAL-true
+RCC.ADCFreqValue=36000000
+RCC.AHBFreq_Value=72000000
+RCC.APB1CLKDivider=RCC_HCLK_DIV2
+RCC.APB1Freq_Value=36000000
+RCC.APB1TimFreq_Value=72000000
+RCC.APB2Freq_Value=72000000
+RCC.APB2TimFreq_Value=72000000
+RCC.FCLKCortexFreq_Value=72000000
 RCC.FamilyName=M
-RCC.IPParameters=APB1Freq_Value,APB2Freq_Value,FamilyName,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLSourceVirtualString,TimSysFreq_Value
-RCC.PLLCLKFreq_Value=8000000
-RCC.PLLMCOFreq_Value=4000000
-RCC.PLLSourceVirtualString=RCC_PLLSOURCE_HSI_DIV2
-RCC.TimSysFreq_Value=8000000
+RCC.HCLKFreq_Value=72000000
+RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,USBPrescaler,VCOOutput2Freq_Value
+RCC.MCOFreq_Value=72000000
+RCC.PLLCLKFreq_Value=72000000
+RCC.PLLMCOFreq_Value=36000000
+RCC.PLLMUL=RCC_PLL_MUL9
+RCC.SYSCLKFreq_VALUE=72000000
+RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
+RCC.TimSysFreq_Value=72000000
+RCC.USBFreq_Value=48000000
+RCC.USBPrescaler=RCC_USBCLKSOURCE_PLL_DIV1_5
+RCC.VCOOutput2Freq_Value=8000000
+USB_DEVICE.CLASS_NAME_FS=CDC
+USB_DEVICE.IPParameters=VirtualMode,VirtualModeFS,CLASS_NAME_FS
+USB_DEVICE.VirtualMode=Cdc
+USB_DEVICE.VirtualModeFS=Cdc_FS
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
+VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Mode=CDC_FS
+VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Signal=USB_DEVICE_VS_USB_DEVICE_CDC_FS
 board=custom