STM32F373使用HAL库函数进行CAN发送数据进入错误中断

1万 · 2021-10-19 23:14

1万 · 2021-10-19 23:16

然后呢？你是怎么应对这个的呢

1万 · 2021-10-19 23:18

今天开始用HAL库写CAN通讯程序，就回环模式都始终不能发送数据，一调用HAL_CAN_AddTxMessage函数就进入HardFault_Handler

1万 · 2021-10-19 23:20

楼主程序可以公开吗？贴程序看下吧，这么说看不出什么原因

1万 · 2021-10-19 23:34

void MX_CAN_Init(void)
{

  HCAN1.Instance = CAN;
  HCAN1.Init.Prescaler = 64;
  HCAN1.Init.Mode =  CAN_MODE_LOOPBACK ;//CAN_MODE_NORMAL;
  HCAN1.Init.SyncJumpWidth = CAN_SJW_1TQ;
  HCAN1.Init.TimeSeg1 = CAN_BS1_4TQ;
  HCAN1.Init.TimeSeg2 = CAN_BS2_4TQ;
  HCAN1.Init.TimeTriggeredMode = DISABLE;
  HCAN1.Init.AutoBusOff = DISABLE;
  HCAN1.Init.AutoWakeUp = DISABLE;
  HCAN1.Init.AutoRetransmission = DISABLE;
  HCAN1.Init.ReceiveFifoLocked = ENABLE;
  HCAN1.Init.TransmitFifoPriority = ENABLE;

  if (HAL_CAN_Init(&HCAN1) != HAL_OK)
  {
Error_Handler();
  }
  /* USER CODE BEGIN 1 */

//Configure the CAN Filter
  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(&HCAN1, &sFilterConfig) != HAL_OK)
  {
//Filter configuration Error
Error_Handler();
  }

  /* Start the CAN peripheral */
  if (HAL_CAN_Start(&HCAN1) != HAL_OK)
  {
/* Start Error */
Error_Handler();
  }

}

1万 · 2021-10-19 23:36

在调用库函数
HAL_RetVal=HAL_CAN_AddTxMessage(&HCAN1,&TxHeader,TxData,(uint32_t*)CAN_TX_MAILBOX0);
时进入硬件错误中断。根据单步调试，具体是在执行库函数里边的以下赋值语句出现错误。

1万 · 2021-10-19 23:38

hcan->Instance->sTxMailBox[transmitmailbox].TIR = ((pHeader->StdId << CAN_TI0R_STID_Pos) |pHeader->RTR);
在执行以上语句前时，数据如下：

1万 · 2021-10-19 23:41

1万 · 2021-10-19 23:43

执行过后

1万 · 2021-10-19 23:45

难道是定义hcan的位置不合适

1万 · 2021-10-19 23:46

导致访问超界了么？

1万 · 2021-10-19 23:47

看论坛里边用HAL库做CAN通讯好顺利的样子，我这个为什么会出这样的幺蛾子呢？

1万 · 2021-10-19 23:48

芯片是STM32F373RCT6

1万 · 2021-10-19 23:50

引脚是复用的B口的

void HAL_CAN_MspInit(CAN_HandleTypeDef* canHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(canHandle->Instance==CAN)
  {
  /* USER CODE BEGIN CAN_MspInit 0 */

  /* USER CODE END CAN_MspInit 0 */
/* CAN clock enable */
__HAL_RCC_CAN1_CLK_ENABLE();

__HAL_RCC_GPIOB_CLK_ENABLE();
/**CAN GPIO Configuration
PB8    ------> CAN_RX
PB9    ------> CAN_TX
*/
GPIO_InitStruct.Pin = CAN_RX_Pin|CAN_TX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF9_CAN;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

HAL_I2CEx_EnableFastModePlus(SYSCFG_CFGR1_I2C_PB8_FMP);

HAL_I2CEx_EnableFastModePlus(SYSCFG_CFGR1_I2C_PB9_FMP);

/* CAN interrupt Init */
HAL_NVIC_SetPriority(CAN_TX_IRQn, 7, 0);
HAL_NVIC_EnableIRQ(CAN_TX_IRQn);
HAL_NVIC_SetPriority(CAN_RX0_IRQn, 4, 0);
HAL_NVIC_EnableIRQ(CAN_RX0_IRQn);
HAL_NVIC_SetPriority(CAN_RX1_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(CAN_RX1_IRQn);
  /* USER CODE BEGIN CAN_MspInit 1 */

  /* USER CODE END CAN_MspInit 1 */
  }
}

1万 · 2021-10-19 23:51

还是因为没搞清楚库函数的参数意义，问题出在了调用参数的赋值上HAL_StatusTypeDef HAL_CAN_AddTxMessage(CAN_HandleTypeDef *hcan, CAN_TxHeaderTypeDef *pHeader, uint8_t aData[], uint32_t *pTxMailbox)
/**
  * @brief  Add a message to the first free Tx mailbox and activate the
  *       corresponding transmission request.
  * @param  hcan pointer to a CAN_HandleTypeDef structure that contains
  *       the configuration information for the specified CAN.
  * @param  pHeader pointer to a CAN_TxHeaderTypeDef structure.
  * @param  aData array containing the payload of the Tx frame.
  * @param  pTxMailbox pointer to a variable where the function will return
  *       the TxMailbox used to store the Tx message.
  *       This parameter can be a value of @ARG CAN_Tx_Mailboxes.
  * @retval HAL status
  */

pTxMailbox pointer必须要是一个已定义数据的地址

1万 · 2021-10-19 23:51

或者给出的一个满足条件的地址才行

1万 · 2021-10-19 23:52

请问是要自己重新给这个地址定义数据吗?

1万 · 2021-10-19 23:52

请问楼主问题解决了吗，我调试STM32F303CC，也是到这句话后死机，进入错误中断。

1万 · 2021-10-19 23:53

嗯，我再好好缕一缕吧，有了好消息及时通知大家

只看该作者 · 2021-11-7 16:36

是使用的回环模式吗