```c
void HAL_CAN_MspInit(CAN_HandleTypeDef* hcan)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hcan->Instance==CAN1)
  {
  /* USER CODE BEGIN CAN1_MspInit 0 */
      void rt_kprintf(const char *fmt, ...);
      rt_kprintf("## HAL_CAN_MspInit ##\n");
  /* USER CODE END CAN1_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_CAN1_CLK_ENABLE();

__HAL_RCC_GPIOI_CLK_ENABLE();
    __HAL_RCC_GPIOH_CLK_ENABLE();
    /**CAN1 GPIO Configuration
    PI9     ------> CAN1_RX
    PH13     ------> CAN1_TX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9;
    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(GPIOI, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_13;
    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(GPIOH, &GPIO_InitStruct);

/* CAN1 interrupt Init */
    HAL_NVIC_SetPriority(CAN1_TX_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(CAN1_TX_IRQn);
    HAL_NVIC_SetPriority(CAN1_RX0_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(CAN1_RX0_IRQn);
    HAL_NVIC_SetPriority(CAN1_RX1_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(CAN1_RX1_IRQn);
    HAL_NVIC_SetPriority(CAN1_SCE_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(CAN1_SCE_IRQn);
  /* USER CODE BEGIN CAN1_MspInit 1 */

/* USER CODE END CAN1_MspInit 1 */
  }

}
```