LOG分级打印

Sun, 06 Aug 2023 03:46:57 +0000

这个是关于LOG分级打印的配置，并有时间戳，基于STM32H7和gcc；

环境

STM32H743IIT6、STM32CubeMX、GCC、MakeFile

printf映射

usart.c中加入以下代码

#include "stdio.h"
/*# 7- Retarget printf to UART (std library and toolchain dependent) #########*/

#if defined(__GNUC__)
int _write(int fd, char *ptr, int len)
{
    HAL_UART_Transmit(&huart1, (uint8_t *)ptr, len, HAL_MAX_DELAY);
    return len;
}
#elif defined(__ICCARM__)
#include "LowLevelIOInterface.h"
size_t __write(int handle, const unsigned char *buffer, size_t size)
{
    HAL_UART_Transmit(&huart1, (uint8_t *)buffer, size, HAL_MAX_DELAY);
    return size;
}
#elif defined(__CC_ARM)
int fputc(int ch, FILE *f)
{
    HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
    return ch;
}
#endif

#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */

/**
 * @brief  Retargets the C library printf function to the USART.
 * @param  None
 * @retval None
 */
PUTCHAR_PROTOTYPE
{
    HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, HAL_MAX_DELAY);
    return ch;
}

MakeFile中删除以下配置：

LOG on Rancho's Notes

LOG分级打印

环境

printf映射