USART重定向STM32F407usart.c中添加如下代码/* USER CODE BEGIN 1 */ #include stdio.h int fputc(int ch, FILE *f) { HAL_UART_Transmit(huart1, (uint8_t *)ch, 1, 100); return ch; } /* USER CODE END 1 */usart.h中添加如下代码#include stdio.h