[stm32] stm32F4 hal调用HAL_UART_Transmit_IT后printf不能打印的问题_John_chaos的博客

2021.11.12 串口打log

main {

    printf("\r\n 111111 \r\n");
	
    HAL_UART_Transmit(&huart1, chaoTxBuffer, strlen(chaoTxBuffer), 0xffff);
    HAL_UART_Transmit_IT(&huart1, chaoTxBuffer, strlen(chaoTxBuffer));

    printf("\r\n 22222\r\n");

}
--------------
PUTCHAR_PROTYPE
{
 
	HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xffff); 

  return ch;
}

void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
	printf("\r\nqyc, at HAL_UART_TxCpltCallback\r\n");
}
	main {

    printf("\r\n 11