EEPW论坛

只接收标准ID=0X80的数据帧，标准数据帧＝{0x29, 0xF2, 0x01, 0x00, 0x01}，匹配好，PB14/15置 低；

一，过滤器配置

void CAN_Filter_Init(void) { CAN_FilterTypeDef sFilterConfig;
sFilterConfig.FilterBank = 0;                    / 过滤器组0 / sFilterConfig.FilterMode = CAN_FILTERMODE_IDLIST;  / 屏蔽位模�? / sFilterConfig.FilterScale = CAN_FILTERSCALE_16BIT; / 32位�??/
sFilterConfig.FilterIdHigh         =0x80;               / 要过滤的ID高位 / sFilterConfig.FilterIdLow          = 0xFFFF; sFilterConfig.FilterMaskIdHigh     = 0xFFFF;            / 过滤器高16位每位必须匹�? / sFilterConfig.FilterMaskIdLow      = 0xFFFF;            / 过滤器低16位每位必须匹�? / sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;           / 过滤器被关联到FIFO 0 / sFilterConfig.FilterActivation = CAN_FILTER_ENABLE;          / 使能过滤�? / sFilterConfig.SlaveStartFilterBank = 14;
if( HAL_CAN_ConfigFilter(&hcan, &sFilterConfig)!=HAL_OK) {Error_Handler();      } if( HAL_CAN_Start(&hcan)!=HAL_OK) { Error_Handler(); }
if( HAL_CAN_ActivateNotification(&hcan, CAN_IT_RX_FIFO0_MSG_PENDING)!=HAL_OK) {  Error_Handler();           }
}

二，中断回调函数

void HAL_CAN_RxFifo0MsgPendingCallback(CAN_HandleTypeDef *hcan) { uint32_t i; uint8_t aData[5],RxData[5];
if(hcan->Instance==CAN1) { if( HAL_CAN_GetRxMessage(&hcan, CAN_RX_FIFO0, &RxHeader, aData)==HAL_OK ) { for(i = 0; i<5; i++) { RxData[i] = aData[i]; } }
if((RxData[0]==0x29) && (RxData[1]=0xF2) && (RxData[2]==0x01) && (RxData[3]==0x00) && (RxData[4]==0x01)) {
HAL_GPIO_WritePin(GPIOB,GPIO_PIN_14,RESET); HAL_GPIO_WritePin(GPIOB,GPIO_PIN_15,RESET);
}
} }