CUBEMX使用CAN1收发正常,CAN2发送只有一小段波形并且只有上...
本帖最后由 两只袜子 于 2022-5-5 09:16 编辑芯片:STM32F429IGTx
开发板:野火挑战者F429开发板
开发环境:KEIL 5.24.2
CUBEMX库:STM32F4 1.16.0
现象:配置的CAN1可以和周立功的USBCAN-I-MINI进行正常的收发,CAN2在发送的时候只有很短的一小段波形,而且只在上电后第一次发送有波形,后边在怎么发送都没有波形(通过示波器直接观察PB13引脚).两个CAN外设波特率设置都是500k.
CAN_FilterConfTypeDef sFilterConfig;static CanTxMsgTypeDef TxMessage1;static CanRxMsgTypeDef RxMessage1;static CanTxMsgTypeDef TxMessage2;static CanRxMsgTypeDef RxMessage2;void MX_CAN1_Init(void){
hcan1.Instance = CAN1;hcan1.Init.Prescaler = 10;hcan1.Init.Mode = CAN_MODE_NORMAL;hcan1.Init.SJW = CAN_SJW_2TQ;hcan1.Init.BS1 = CAN_BS1_5TQ;hcan1.Init.BS2 = CAN_BS2_3TQ;hcan1.Init.TTCM = DISABLE;hcan1.Init.ABOM = DISABLE;hcan1.Init.AWUM = DISABLE;hcan1.Init.NART = DISABLE;hcan1.Init.RFLM = DISABLE;hcan1.Init.TXFP = DISABLE;if (HAL_CAN_Init(&hcan1) != HAL_OK){ _Error_Handler(__FILE__, __LINE__);}
}/* CAN2 init function */void MX_CAN2_Init(void){
hcan2.Instance = CAN2;hcan2.Init.Prescaler = 10;hcan2.Init.Mode = CAN_MODE_NORMAL;hcan2.Init.SJW = CAN_SJW_2TQ;hcan2.Init.BS1 = CAN_BS1_5TQ;hcan2.Init.BS2 = CAN_BS2_3TQ;hcan2.Init.TTCM = DISABLE;hcan2.Init.ABOM = DISABLE;hcan2.Init.AWUM = DISABLE;hcan2.Init.NART = DISABLE;hcan2.Init.RFLM = DISABLE;hcan2.Init.TXFP = DISABLE;if (HAL_CAN_Init(&hcan2) != HAL_OK){ _Error_Handler(__FILE__, __LINE__);}
}
hcan1.pTxMsg = &TxMessage1;hcan1.pRxMsg = &RxMessage1;hcan2.pTxMsg = &TxMessage2;hcan2.pRxMsg = &RxMessage2;
sFilterConfig.FilterNumber = 0;sFilterConfig.FilterMode = CAN_FILTERMODE_IDLIST;sFilterConfig.FilterScale = CAN_FILTERSCALE_16BIT;sFilterConfig.FilterIdHigh = (uint32_t)0x0123<<5;sFilterConfig.FilterIdLow = CAN_ID_STD;sFilterConfig.FilterMaskIdHigh = 0xFFFF;sFilterConfig.FilterMaskIdLow = 0xFFFF;sFilterConfig.FilterFIFOAssignment = CAN_FILTER_FIFO0;sFilterConfig.FilterActivation = ENABLE;sFilterConfig.BankNumber = 14;
if(HAL_CAN_ConfigFilter(&hcan1, &sFilterConfig) != HAL_OK){ DEBUG("HAL_CAN_ConfigFilter ERR\r\n");}
sFilterConfig.FilterNumber = 14; sFilterConfig.FilterFIFOAssignment = CAN_FILTER_FIFO1;
if(HAL_CAN_ConfigFilter(&hcan2, &sFilterConfig) != HAL_OK){ DEBUG("HAL_CAN_ConfigFilter ERR\r\n");}
hcan1.pTxMsg->StdId = 0x123;hcan1.pTxMsg->RTR = CAN_RTR_DATA;hcan1.pTxMsg->IDE = CAN_ID_STD;hcan1.pTxMsg->DLC = 8; hcan1.pTxMsg->Data = 0x01; hcan1.pTxMsg->Data = 0x02; hcan1.pTxMsg->Data = 0x03; hcan1.pTxMsg->Data = 0x04; hcan1.pTxMsg->Data = 0x05; hcan1.pTxMsg->Data = 0x06; hcan1.pTxMsg->Data = 0x07; hcan1.pTxMsg->Data = 0x08;
hcan2.pTxMsg->StdId = 0x123;hcan2.pTxMsg->RTR = CAN_RTR_DATA;hcan2.pTxMsg->IDE = CAN_ID_STD;hcan2.pTxMsg->DLC = 8; hcan2.pTxMsg->Data = 0x01; hcan2.pTxMsg->Data = 0x02; hcan2.pTxMsg->Data = 0x03; hcan2.pTxMsg->Data = 0x04; hcan2.pTxMsg->Data = 0x05; hcan2.pTxMsg->Data = 0x06; hcan2.pTxMsg->Data = 0x07; hcan2.pTxMsg->Data = 0x08;
if(HAL_CAN_Receive_IT(&hcan1, CAN_FIFO0) != HAL_OK){ DEBUG("HAL_CAN1_Receive_IT ERR\r\n");}
if(HAL_CAN_Receive_IT(&hcan2, CAN_FIFO1) != HAL_OK){ DEBUG("HAL_CAN2_Receive_IT ERR\r\n");}
/*******************************main循环*******************************/
CAN2_FLAG = HAL_CAN_Transmit(&hcan2, 10);if(CAN2_FLAG == HAL_OK){ DEBUG("5AL_CAN_Transmit HAL_OK\r\n");}else if(CAN2_FLAG == HAL_ERROR){ DEBUG("6AL_CAN_Transmit HAL_ERROR\r\n");}else if(CAN2_FLAG == HAL_BUSY){ DEBUG("7AL_CAN_Transmit HAL_BUSY\r\n");}else if(CAN2_FLAG == HAL_TIMEOUT){ DEBUG("8AL_CAN_Transmit HAL_TIMEOUT\r\n");}CAN2_FLAG = HAL_OK;
CAN1_FLAG = HAL_CAN_Transmit(&hcan1, 10);if(CAN1_FLAG == HAL_OK){ DEBUG("1AL_CAN_Transmit HAL_OK\r\n");}else if(CAN1_FLAG == HAL_ERROR){ DEBUG("2AL_CAN_Transmit HAL_ERROR\r\n");}else if(CAN1_FLAG == HAL_BUSY){ DEBUG("3AL_CAN_Transmit HAL_BUSY\r\n");}else if(CAN1_FLAG == HAL_TIMEOUT){ DEBUG("4AL_CAN_Transmit HAL_TIMEOUT\r\n");}CAN1_FLAG = HAL_OK;
void HAL_CAN_RxCpltCallback(CAN_HandleTypeDef* CanHandle){ int i=0;
if(CanHandle ==&hcan1) { __HAL_CAN_ENABLE_IT(&hcan1,CAN_IT_FMP0); printf("1pRxMsg->StdId : 0x%x\r\n",hcan1.pRxMsg->StdId); printf("1pRxMsg->DLC : 0x%x\r\n",hcan1.pRxMsg->DLC); printf("1DATA :"); for(i=0;i<hcan1.pRxMsg->DLC;i++) { printf(" 0x%x ",hcan1.pRxMsg->Data); } printf("\r\n\r\n"); }
if(CanHandle ==&hcan2) { __HAL_CAN_ENABLE_IT(&hcan2,CAN_IT_FMP1); printf("2pRxMsg->StdId : 0x%x\r\n",hcan2.pRxMsg->StdId); printf("2pRxMsg->DLC : 0x%x\r\n",hcan2.pRxMsg->DLC); printf("2DATA :"); for(i=0;i<hcan2.pRxMsg->DLC;i++) { printf(" 0x%x ",hcan2.pRxMsg->Data); } printf("\r\n\r\n"); }}当更改sFilterConfig.FilterNumber = 14;时网上又说仍然要执行HAL_CAN_ConfigFilter(&hcan1, &sFilterConfig)而不能执行HAL_CAN_ConfigFilter(&hcan2, &sFilterConfig),这种方法我也试过,仍旧不行,并且同样尝试过两个CAN使用同一个CAN_FILTER_FIFO0的情况,依然不可行.
示波器上能看到CAN2发送管脚PB13发出的波形大概只有两三位然后就没有了,后边在怎么执行CAN2发送命令也不会再有任何波形.请各位帮忙看一下究竟是哪里出了问题?困扰我三天了死活找不到结症所在 不知道博主有没有解决，求分享。
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