Add CAN communication and GPIO control functionality

- Created HAL configuration file for STM32F1xx (stm32f1xx_hal_conf.h).
- Added interrupt handler definitions in stm32f1xx_it.h.
- Implemented CAN initialization and configuration in can.c.
- Configured GPIO pins for output and external interrupts in gpio.c.
- Developed main application logic in main.c for toggling an LED and sending CAN messages.
- Implemented MSP initialization and de-initialization for CAN in stm32f1xx_hal_msp.c.
- Defined interrupt service routines in stm32f1xx_it.c for CAN and EXTI interrupts.
- Added README for project-specific libraries and PlatformIO configuration.
- Created platformio.ini for project build settings.
- Added stm32pio.ini for CubeMX integration with PlatformIO.
- Included README for testing directory to guide unit testing setup.

firmware/components/CAN/CAN-A/ModuleCAN.ioc

@@ -1,139 +0,0 @@
-#MicroXplorer Configuration settings - do not modify
-CAD.formats=
-CAD.pinconfig=
-CAD.provider=
-CAN.CalculateBaudRate=533333
-CAN.CalculateTimeBit=1875
-CAN.CalculateTimeQuantum=625.0
-CAN.IPParameters=CalculateTimeQuantum,CalculateTimeBit,CalculateBaudRate,Prescaler
-CAN.Prescaler=15
-File.Version=6
-GPIO.groupedBy=
-KeepUserPlacement=false
-Mcu.CPN=STM32F103C8T6
-Mcu.Family=STM32F1
-Mcu.IP0=CAN
-Mcu.IP1=NVIC
-Mcu.IP2=RCC
-Mcu.IP3=SYS
-Mcu.IP4=USB
-Mcu.IP5=USB_DEVICE
-Mcu.IPNb=6
-Mcu.Name=STM32F103C(8-B)Tx
-Mcu.Package=LQFP48
-Mcu.Pin0=PC13-TAMPER-RTC
-Mcu.Pin1=PD0-OSC_IN
-Mcu.Pin10=VP_SYS_VS_Systick
-Mcu.Pin11=VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS
-Mcu.Pin2=PD1-OSC_OUT
-Mcu.Pin3=PA4
-Mcu.Pin4=PA11
-Mcu.Pin5=PA12
-Mcu.Pin6=PA13
-Mcu.Pin7=PA14
-Mcu.Pin8=PB8
-Mcu.Pin9=PB9
-Mcu.PinsNb=12
-Mcu.ThirdPartyNb=0
-Mcu.UserConstants=
-Mcu.UserName=STM32F103C8Tx
-MxCube.Version=6.13.0
-MxDb.Version=DB.6.0.130
-NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.CAN1_RX1_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
-NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.ForceEnableDMAVector=true
-NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
-NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
-NVIC.USB_LP_CAN1_RX0_IRQn=true\:0\:0\:false\:false\:true\:false\:true\:true
-NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-PA11.Mode=Device
-PA11.Signal=USB_DM
-PA12.Mode=Device
-PA12.Signal=USB_DP
-PA13.Locked=true
-PA13.Mode=Serial_Wire
-PA13.Signal=SYS_JTMS-SWDIO
-PA14.Locked=true
-PA14.Mode=Serial_Wire
-PA14.Signal=SYS_JTCK-SWCLK
-PA4.Locked=true
-PA4.Signal=GPIO_Input
-PB8.Mode=CAN_Activate
-PB8.Signal=CAN_RX
-PB9.Mode=CAN_Activate
-PB9.Signal=CAN_TX
-PC13-TAMPER-RTC.Locked=true
-PC13-TAMPER-RTC.Signal=GPIO_Output
-PD0-OSC_IN.Mode=HSE-External-Oscillator
-PD0-OSC_IN.Signal=RCC_OSC_IN
-PD1-OSC_OUT.Mode=HSE-External-Oscillator
-PD1-OSC_OUT.Signal=RCC_OSC_OUT
-PinOutPanel.RotationAngle=0
-ProjectManager.AskForMigrate=true
-ProjectManager.BackupPrevious=false
-ProjectManager.CompilerOptimize=6
-ProjectManager.ComputerToolchain=false
-ProjectManager.CoupleFile=true
-ProjectManager.CustomerFirmwarePackage=
-ProjectManager.DefaultFWLocation=true
-ProjectManager.DeletePrevious=true
-ProjectManager.DeviceId=STM32F103C8Tx
-ProjectManager.FirmwarePackage=STM32Cube FW_F1 V1.8.6
-ProjectManager.FreePins=false
-ProjectManager.HalAssertFull=false
-ProjectManager.HeapSize=0x200
-ProjectManager.KeepUserCode=true
-ProjectManager.LastFirmware=true
-ProjectManager.LibraryCopy=1
-ProjectManager.MainLocation=Core/Src
-ProjectManager.NoMain=false
-ProjectManager.PreviousToolchain=
-ProjectManager.ProjectBuild=false
-ProjectManager.ProjectFileName=ModuleCAN.ioc
-ProjectManager.ProjectName=ModuleCAN
-ProjectManager.ProjectStructure=
-ProjectManager.RegisterCallBack=
-ProjectManager.StackSize=0x400
-ProjectManager.TargetToolchain=CMake
-ProjectManager.ToolChainLocation=
-ProjectManager.UAScriptAfterPath=
-ProjectManager.UAScriptBeforePath=
-ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_CAN_Init-CAN-false-HAL-true,4-MX_USB_DEVICE_Init-USB_DEVICE-false-HAL-false
-RCC.ADCFreqValue=24000000
-RCC.AHBFreq_Value=48000000
-RCC.APB1CLKDivider=RCC_HCLK_DIV2
-RCC.APB1Freq_Value=24000000
-RCC.APB1TimFreq_Value=48000000
-RCC.APB2Freq_Value=48000000
-RCC.APB2TimFreq_Value=48000000
-RCC.FCLKCortexFreq_Value=48000000
-RCC.FamilyName=M
-RCC.HCLKFreq_Value=48000000
-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,PLLSourceVirtual,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,VCOOutput2Freq_Value
-RCC.MCOFreq_Value=48000000
-RCC.PLLCLKFreq_Value=48000000
-RCC.PLLMCOFreq_Value=24000000
-RCC.PLLMUL=RCC_PLL_MUL6
-RCC.PLLSourceVirtual=RCC_PLLSOURCE_HSE
-RCC.SYSCLKFreq_VALUE=48000000
-RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
-RCC.TimSysFreq_Value=48000000
-RCC.USBFreq_Value=48000000
-RCC.VCOOutput2Freq_Value=8000000
-USB_DEVICE.CLASS_NAME_FS=CDC
-USB_DEVICE.IPParameters=VirtualMode,VirtualModeFS,CLASS_NAME_FS,PRODUCT_STRING_CDC_FS
-USB_DEVICE.PRODUCT_STRING_CDC_FS=Modular Keyboard - Module VCOM
-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

firmware/components/CAN/CAN-A/stm32pio.ini

@@ -1,22 +0,0 @@
-[app]
-platformio_cmd = platformio
-cubemx_cmd = /opt/stm32cubemx/STM32CubeMX
-java_cmd = java
-
-[project]
-cubemx_script_content = config load ${ioc_file_absolute_path}
-	generate code ${project_dir_absolute_path}
-	exit
-platformio_ini_patch_content = [platformio]
-	include_dir = Inc
-	src_dir = Src
-board = 
-ioc_file = ModuleCAN.ioc
-cleanup_ignore = ModuleCAN.ioc
-cleanup_use_git = False
-inspect_ioc = True
-last_error = PlatformIO board is not specified, it will be needed on PlatformIO project creation. Type 'pio boards' or go to https://platformio.org to find an appropriate identifier
-	Traceback (most recent call last):
-	  File "/home/kymkim/.local/share/pipx/venvs/stm32pio/lib/python3.13/site-packages/stm32pio/cli/app.py", line 195, in main
-	    raise Exception(no_board_message)
-