1、在代碼中加入一下printf的重定向代碼
#define ITM_Port8(n) (*((volatile unsigned char *)(xE0000000+*n)))
#define ITM_Port16(n) (*((volatile unsigned short*)(xE0000000+*n)))
#define ITM_Port32(n) (*((volatile unsigned long *)(xE0000000+*n)))
#define DEMCR (*((volatile unsigned long *)(xE000EDFC)))
#define TRCENA x01000000
struct __FILE {
int handle; /* Add whatever needed */
};
FILE __stdout;
FILE __stdin;
typedef signed int int32_t;
volatile int32_t ITM_RxBuffer=;
int fputc(int ch, FILE *f) {
if (DEMCR & TRCENA) {
while (ITM_Port32(0) == 0);
ITM_Port8(0) = ch;
}
return(ch);
}
2、到debug菜單下點選settings
選中Track Enable
3、利用軟體仿真模式
4、進入debug模式
選中之後,然後全速運作,即可在該視窗中顯示資訊。