Posted on May 30, 2016 at 08:37I have edited the retarget.c however all the usart terms are underline. Do I need to define something or include some library?
//code///////
/*----------------------------------------------------------------------------
* Name: Retarget.c
* Purpose: 'Retarget' layer for target-dependent low level functions
* Note(s):
*----------------------------------------------------------------------------
* This file is part of the µVision/ARM development tools.
* 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.
*
* This software is supplied ''AS IS'' without warranties of any kind.
*
* Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
*----------------------------------------------------------------------------*/
#include <stdio.h>
#include <rt_misc.h>
#pragma import(__use_no_semihosting_swi)
extern int sendchar (int c);
extern int getkey (void);
struct __FILE { int handle; /* Add whatever you need here */ };
FILE __stdout;
FILE __stdin;
int fputc(int c, FILE *f) {
return (sendchar(c));
}
int fgetc(FILE *f) {
return (getkey());
}
int ferror(FILE *f) {
/* Your implementation of ferror */
return EOF;
}
void _ttywrch(int c) {
sendchar(c);
}
void _sys_exit(int return_code) {
label: goto label; /* endless loop */
}
void outstring(char *s)
{
while(*s)
{
while(!(USART1->ISR & USART_ISR_TXE));
USART1->TDR = *s++;
}
}
void outchar(char c)
{
while(!(USART1->ISR & USART_ISR_TXE));
USART1->TDR = c;
}
int SendChar(int c)
{
while(!(USART1->ISR & USART_ISR_TXE));
USART1->TDR = c;
return(c);
}
