MDK+硬件仿真器实现debugprintf()【终于找到这个教程了】

/******************************************************************************/



/* STM32DBG.INI: STM32 Debugger Initialization File */



/******************************************************************************/



// <<< Use Configuration Wizard in Context Menu >>> // 



/******************************************************************************/



/* This file is part of the uVision/ARM development tools. */



/* Copyright (c) 2005-2007 Keil Software. All rights reserved. */



/* This software may only be used under the terms of a valid, current, */



/* end user licence from KEIL for a compatible version of KEIL software */



/* development tools. Nothing else gives you the right to use this software. */



/******************************************************************************/



FUNC void DebugSetup (void) {



// <h> Debug MCU Configuration



// <o1.0> DBG_SLEEP <i> Debug Sleep Mode



// <o1.1> DBG_STOP <i> Debug Stop Mode



// <o1.2> DBG_STANDBY <i> Debug Standby Mode



// <o1.5> TRACE_IOEN <i> Trace I/O Enable 



// <o1.6..7> TRACE_MODE <i> Trace Mode



// <0=> Asynchronous



// <1=> Synchronous: TRACEDATA Size 1



// <2=> Synchronous: TRACEDATA Size 2



// <3=> Synchronous: TRACEDATA Size 4



// <o1.8> DBG_IWDG_STOP <i> Independant Watchdog Stopped when Core is halted



// <o1.9> DBG_WWDG_STOP <i> Window Watchdog Stopped when Core is halted



// <o1.10> DBG_TIM1_STOP <i> Timer 1 Stopped when Core is halted



// <o1.11> DBG_TIM2_STOP <i> Timer 2 Stopped when Core is halted



// <o1.12> DBG_TIM3_STOP <i> Timer 3 Stopped when Core is halted



// <o1.13> DBG_TIM4_STOP <i> Timer 4 Stopped when Core is halted



// <o1.14> DBG_CAN_STOP <i> CAN Stopped when Core is halted



// </h>



_WDWORD(0xE0042004, 0x00000027); // DBGMCU_CR



_WDWORD(0xE000ED08, 0x20000000); // Setup Vector Table Offset Register



}



DebugSetup(); // Debugger Setup

#include <stdio.h>



#include "stm32f10x.h"



#pragma import(__use_no_semihosting_swi)



struct __FILE { int handle; /* Add whatever you need here */ };



    FILE __stdout;



    FILE __stdin;



int fputc(int ch, FILE *f) 



{



    return ITM_SendChar(ch);



}



volatile int32_t ITM_RxBuffer;



int fgetc(FILE *f)



{



  while (ITM_CheckChar() != 1) __NOP();



  return (ITM_ReceiveChar());



}



int ferror(FILE *f)



{



    /* Your implementation of ferror */



    return EOF;



}



void _ttywrch(int c)



{



    fputc(c, 0);



}



int __backspace()



{



    return 0;



}



void _sys_exit(int return_code)



{



label:



    goto label; /* endless loop */



}

#include <stdio.h>



#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



struct __FILE { int handle; /* Add whatever you need here */ };



    FILE __stdout;



    FILE __stdin;



int fputc(int ch, FILE *f) 



{



    if (DEMCR & TRCENA) 



    {



        while (ITM_Port32(0) == 0);



        ITM_Port8(0) = ch;



    }



    return(ch);



}