Hi there,
we are using the STM32F303K8 with the NUCLEO-F303K8 board. I installed the latest STM32 Cube IDE v.1.0.0 and wanted to get the CAN bus working.
So after searching for the latest documentation it took a while to figure out the new can bus implenentation. So as mentioned in "STM32L$ CAN new API and migration.pdf" my code looks like this:
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_USART2_UART_Init();
MX_CAN_Init();
MX_SPI1_Init();
/* USER CODE BEGIN 2 */
CAN_FilterTypeDef sFilterConfig;
CAN_TxHeaderTypeDef TxHeader;
CAN_RxHeaderTypeDef RxHeader;
uint8_t TxData[8];
uint8_t RxData[8];
uint32_t TxMailbox;
/* USER CODE BEGIN 2 */
sFilterConfig.FilterBank = 0;
sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT;
sFilterConfig.FilterIdHigh = 0x0000;
sFilterConfig.FilterIdLow = 0x0000;
sFilterConfig.FilterMaskIdHigh = 0x0000;
sFilterConfig.FilterMaskIdLow = 0x0000;
sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;
sFilterConfig.FilterActivation = ENABLE;
sFilterConfig.SlaveStartFilterBank = 14;
if(HAL_CAN_ConfigFilter(&hcan, &sFilterConfig)!=HAL_OK){
/* Filter configuration Error */
Error_Handler();
}
if(HAL_CAN_Start(&hcan)!=HAL_OK){
/* Start Error */
Error_Handler();
}
if(HAL_CAN_ActivateNotification(&hcan,CAN_IT_RX_FIFO0_MSG_PENDING |CAN_IT_TX_MAILBOX_EMPTY)!=HAL_OK){
/* Notification Error */
Error_Handler();
}
TxHeader.StdId = 0x321;
TxHeader.ExtId = 0x01;
TxHeader.RTR = CAN_RTR_DATA;
TxHeader.IDE = CAN_ID_STD;
TxHeader.DLC = 8;
TxHeader.TransmitGlobalTime = DISABLE;
TxData[0] = 1;
TxData[1] = 2;
TxData[2] = 3;
TxData[3] = 4;
TxData[4] = 5;
TxData[5] = 6;
TxData[6] = 7;
TxData[7] = 8;
while(1){
/* USER CODE BEGIN 3 */
HAL_CAN_AddTxMessage(&hcan,&TxHeader,TxData,&TxMailbox);
HAL_Delay(500);
TxData[7]=TxData[7]+1;
}
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
So far so good,
so my PORT Map is defined as follows:
PA12 = CAN_TX
PA11 = CAN_RX
PA3 = external IRQ
PA5 = SPI SCK
PA6 = SPI MISO
PA7 = SPI MOSI
PA8 = SPI CS_SS
My System Core -> NVIC Configuration:
...
CAN TX Interrupt = CHECKED
CAN RX0 Interrupt = CHECKED
CAN RX1 Interrupt = CHECKED
CAN SCE Interrupt = CHECKED
Connectivity -> CAN
MASTER MODE = CHECKED
In my opinion everything should be configured fine, so by running the main nothing happens on the pins using my oscilloscope:
PA11 -> D10
PA12 -> D2
Did I miss something to configure?
