stm32f4没有适配CAN吗？怎么找不到drv_can.c文件

发布于 2022-06-29 17:10:35 浏览：773 订阅该版

小小李sunny 2022-06-29

这家伙很懒，什么也没写！

用RTT跑流水灯 2022-06-30

这家伙很懒，什么也没写！

增加了这两个文件，可以注册CAN了，我调试没有进入can的管脚配置函数
```c
/*-------------------------- CAN CONFIG BEGIN --------------------------*/

/** if you want to use CAN you can use the following instructions.
 *
 * STEP 1, open CAN driver framework support in the RT-Thread Settings file
 *
 * STEP 2, define macro related to the CAN
 *                 such as     #define BSP_USING_CAN
 *                             #define BSP_USING_CAN1
 *
 * STEP 3, copy your adc init function from stm32xxxx_hal_msp.c generated by stm32cubemx to the end of board.c file
 *                 such as     void HAL_CAN_MspInit(CAN_HandleTypeDef* canHandle)
 *
 * STEP 4, modify your stm32xxxx_hal_config.h file to support adc peripherals. define macro related to the peripherals
 *                 such as     #define HAL_CAN_MODULE_ENABLED
 *
 */

#define BSP_USING_CAN
#ifdef BSP_USING_CAN
#define BSP_USING_CAN1

#endif

/*-------------------------- CAN CONFIG END --------------------------*/
```
已经在board.c添加了，调试时没有进入这个函数

```c
void HAL_CAN_MspInit(CAN_HandleTypeDef* canHandle)
{

GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(canHandle->Instance==CAN1)
  {
  /* USER CODE BEGIN CAN1_MspInit 0 */

/* USER CODE END CAN1_MspInit 0 */
    /* CAN1 clock enable */
    __HAL_RCC_CAN1_CLK_ENABLE();

__HAL_RCC_GPIOA_CLK_ENABLE();
    /**CAN1 GPIO Configuration
    PA11     ------> CAN1_RX
    PA12     ------> CAN1_TX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF9_CAN1;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/* USER CODE BEGIN CAN1_MspInit 1 */

/* USER CODE END CAN1_MspInit 1 */
  }
}
```