HAL generated by cubemx library, the CAN module configuration is as follows:

 CAN_HandleTypeDef hcan; 
CanTxMsgTypeDef TxMessage; 
CanRxMsgTypeDef RxMessage; 
/* CAN init function */
Void MX_CAN_Init (void) 
{

Hcan. Instance=CAN; 
Hcan. PTxMsg=& amp; TxMessage; 
Hcan. PRxMsg=& amp; RxMessage; 
//250 k 
Hcan. Init. Prescaler=12; 
Hcan. Init. Mode=CAN_MODE_NORMAL; 
Hcan. Init. SJW=CAN_SJW_1TQ; 
Hcan. Init. BS1=CAN_BS1_7TQ; 
Hcan. Init. BS2=CAN_BS2_8TQ; 
Hcan. Init. TTCM=DISABLE; 
Hcan. Init. ABOM=ENABLE; 
Hcan. Init. AWUM=DISABLE; 
Hcan. Init. NART=DISABLE; 
Hcan. Init. RFLM=DISABLE; 
Hcan. Init. TXFP=DISABLE; 
If (HAL_CAN_Init (& amp; Hcan)!=HAL_OK) 
{
Error_Handler (); 
} 

CAN_FilterConfTypeDef sFilterConfig; 
///* # # - 2 - Configure the CAN Filter # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # */
//sFilterConfig. FilterNumber=0; 
//sFilterConfig. FilterMode=CAN_FILTERMODE_IDMASK; 
//sFilterConfig. FilterScale=CAN_FILTERSCALE_32BIT; 
//sFilterConfig. FilterIdHigh=0 x0000; 
//sFilterConfig. FilterIdLow=0 x0000; 
//sFilterConfig. FilterMaskIdHigh=0 x0000; 
//sFilterConfig. FilterMaskIdLow=0 x0000; 
//sFilterConfig. FilterFIFOAssignment=CAN_FILTER_FIFO0; 
//sFilterConfig. FilterActivation=ENABLE; 
//sFilterConfig. BankNumber=14; 
//if (HAL_CAN_ConfigFilter (& amp; Hcan, & amp; SFilterConfig)!=HAL_OK) 
//{
///* Filter configuration Error */
//Error_Handler (); 
//} 
//HAL_CAN_Receive_IT (& amp; Hcan CAN_FIFO0);//enabled CAN receive interrupt 

/* # # 2 - Configure the CAN Filter # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # */
SFilterConfig. FilterNumber=1; 
SFilterConfig. FilterMode=CAN_FILTERMODE_IDMASK; 
SFilterConfig. FilterScale=CAN_FILTERSCALE_32BIT; 
SFilterConfig. FilterIdHigh=0 x0000; 
SFilterConfig. FilterIdLow=0 x0000; 
SFilterConfig. FilterMaskIdHigh=0 x0000; 
SFilterConfig. FilterMaskIdLow=0 x0000; 
SFilterConfig. FilterFIFOAssignment=CAN_FILTER_FIFO1; 
SFilterConfig. FilterActivation=ENABLE; 
SFilterConfig. BankNumber=14; 

If (HAL_CAN_ConfigFilter (& amp; Hcan, & amp; SFilterConfig)!=HAL_OK) 
{
/* Filter configuration Error */
Error_Handler (); 
} 
HAL_CAN_Receive_IT (& amp; Hcan CAN_FIFO1);//enabled CAN receive interrupt 
} 

The part of the code above commented out CAN_FIFO0, can be normal to receive data (into CAN_FIFO0 receiving interrupt); CAN_FIFO1 conversely, commented that part is also can be normal to receive data (into CAN_FIFO1 receiving interrupt), but if both configuration (not commented out), has been only enter CAN_FIFO0 receiving interrupt, I want to the effect of alternating trigger, can be the same as USB double-buffering?

CodePudding user response:

After every time can accept to the specified buffer

CodePudding user response:

CUBEMX configuration of time how to configure FIFO wow

CodePudding user response:

The building Lord problem can be solved by reference to the: https://blog.csdn.net/xiaoyaofriend/article/details/104138618