某10

STM32 HAL 重定向printf函数输出到串口

某10 • 2019-09-23 • 硬件开发, STM32

#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif
PUTCHAR_PROTOTYPE
{
    HAL_StatusTypeDef sd = HAL_UART_Transmit(&huart3, (uint8_t *)&ch, 1, 0xFFFF);

    return ch;
}