CAN AND UART STM32F446RE

[Yakry]

HAL_UART_Transmit(&huart2, (uint8_t *)"UART OK\r\n", 9, HAL_MAX_DELAY);

filter_config();

if (HAL_CAN_ActivateNotification(&hcan1, CAN_IT_RX_FIFO0_MSG_PENDING | CAN_IT_BUSOFF) != HAL_OK) {
  HAL_UART_Transmit(&huart2, (uint8_t *)"CAN Notification Fail\r\n", 24, HAL_MAX_DELAY);
  Error_Handler();
} else {
  HAL_UART_Transmit(&huart2, (uint8_t *)"CAN Notification OK\r\n", 22, HAL_MAX_DELAY);
}

if(HAL_CAN_Start(&hcan1) != HAL_OK){
  HAL_UART_Transmit(&huart2, (uint8_t *)"CAN NOT START", 16, HAL_MAX_DELAY);
  Error_Handler();
}
else{
  sprintf(msg,"Can start");
  HAL_UART_Transmit(&huart2, (uint8_t *)"Can Start\r\n", 16, HAL_MAX_DELAY);
}

/* USER CODE END 2 */

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
  HAL_UART_Transmit(&huart2, (uint8_t *)"Can Start\r\n", 16, HAL_MAX_DELAY);

---

Code formatting applied - please see How to insert source code for future reference.

[Yakry]

it cannot show anything in tera term

[Tesla DeLorean]

Likely not an issue with the code shown. Look elsewhere..

Write a subroutine to output strings.

Check the initialization code, pins, etc.

[TDK]

> STM32F446RE

So probably the NUCLEO-F446RE board?

What pins are you using? Are they connected to what is sending data to tera term?

[Andrew Neil]

Can you get it to work without CAN - ie, a project which does purely UART, and nothing else ?

[Yakry]

i check it, the clock is mistaken

, thanks

[Yakry]

clock is the problem

and thanks for your reply