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楼主 |
发表于 2015-12-8 23:59:11
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目前就是ITM Trace不成功,ETM Trace没试过。在STM32F103,STM32F105调试ITM printf均可以成功。在STM32F072采用keil相同配置以及程序增加以下代码(已勾选MicroLIB)失败:
#define ITM_Port8(n) (*((volatile unsigned char *)(0xE0000000+4*n)))
#define ITM_Port16(n) (*((volatile unsigned short*)(0xE0000000+4*n)))
#define ITM_Port32(n) (*((volatile unsigned long *)(0xE0000000+4*n)))
#define DEMCR (*((volatile unsigned long *)(0xE000EDFC)))
#define TRCENA 0x01000000
#pragma import(__use_no_semihosting)
struct __FILE { int handle; /* Add whatever needed */ };
FILE __stdout;
FILE __stdin;
int fputc(int ch, FILE *f)
{
if (DEMCR & TRCENA)
{
while (ITM_Port32(0) == 0);
ITM_Port8(0) = ch;
}
return(ch);
} |
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