1.在工程中添加6个文件
除去RTT_Debug.h外的其他几个文件在jlink安装目录
RTT_Debug.h的内容如下
#ifndef _RTT_H_
#define _RTT_H_#include "SEGGER_RTT.h"#define STR_DEBUG
//#define USART_DEBUG#define DBGLOG
#define DBGWARNING
#define DBGERROR#if defined(STR_DEBUG)
#define _S_LINE(x) #x
#define __S_LINE(x) _S_LINE(x)
#define __S_LINE__ __S_LINE(__LINE__)#if defined(DBGLOG)
#define DBG_log(format, ...) SEGGER_RTT_printf(0,RTT_CTRL_TEXT_GREEN"[log]"RTT_CTRL_RESET format"["__FILE__ ":" __S_LINE__ "]\r\n",##__VA_ARGS__)
#else
#define DBG_log(format, ...)
#endif#if defined(DBGWARNING)
#define DBG_Warning(format, ...) SEGGER_RTT_printf(0,RTT_CTRL_TEXT_YELLOW"[Warning!]"RTT_CTRL_RESET format"["__FILE__ ":" __S_LINE__ "]\r\n",##__VA_ARGS__)
#else
#define DBG_Warning(format, ...)
#endif#if defined(DBGERROR)
#define DBG_Error(format, ...) SEGGER_RTT_printf(0,RTT_CTRL_TEXT_RED"[!Error!]"RTT_CTRL_RESET format"["__FILE__ ":" __S_LINE__ "]\r\n",##__VA_ARGS__)
#else
#define DBG_Error(format, ...)
#endif#else
#if defined(USART_DEBUG)#if defined(DBGLOG)
#define DBG_log(format, ...) printf("[log]"format"["__FILE__ ":" __S_LINE__ "]\r\n",##__VA_ARGS__)
#else
#define DBG_log(format, ...)
#endif#if defined(DBGWARNING)
#define DBG_Warning(format, ...) printf("[Warning!]"format"["__FILE__ ":" __S_LINE__ "]\r\n",##__VA_ARGS__)
#else
#define DBG_Warning(format, ...)
#endif#if defined(DBGERROR)
#define DBG_Error(format, ...) printf("[!Error!]"format"["__FILE__ ":" __S_LINE__ "]\r\n",##__VA_ARGS__)
#else
#define DBG_Error(format, ...)
#endif#else
#define DBG_log(format, ...)
#define DBG_Warning(format, ...)
#define DBG_Error(format, ...)#endif#endif#endif2.添加头文件
3.调用API
4.编译，烧录
5.打开jlink rtt viewer
可以观察到调试信息
