Retarget.c

00001 /******************************************************************************/
00002 /* RETARGET.C: 'Retarget' layer for target-dependent low level functions      */
00003 /******************************************************************************/
00004 /* This file is part of the uVision/ARM development tools.                    */
00005 /* Copyright (c) 2005-2007 Keil Software. All rights reserved.                */
00006 /* This software may only be used under the terms of a valid, current,        */
00007 /* end user licence from KEIL for a compatible version of KEIL software       */
00008 /* development tools. Nothing else gives you the right to use this software.  */
00009 /******************************************************************************/
00010 
00011 #include <stdio.h>
00012 #include <rt_misc.h>
00013 
00014 #pragma import(__use_no_semihosting_swi)
00015 
00016 // implementation depends on the microcontroller hardware
00017 extern unsigned char  sendchar(unsigned char ch);  /* in serial.c */
00018 extern unsigned char  getkey(void);
00019 
00020 
00021 struct __FILE { int handle; /* Add whatever you need here */ };
00022 FILE __stdout;
00023 FILE __stdin;
00024 
00025 int fputc(int ch, FILE *f) {
00026   return (sendchar(ch));
00027 }
00028 
00029 // simplified fgetc version that only redirects STDIN
00030 #if 1
00031 int fgetc(FILE * fp)
00032 {
00033 // redirect STDIN   
00034  return(getkey());
00035 }
00036 #else  // echo a char
00037 int fgetc(FILE * fp)
00038 {
00039  return(sendchar(getkey()));
00040 }
00041 #endif
00042 
00043 
00044 int ferror(FILE *f) {
00045   /* Your implementation of ferror */
00046   return EOF;
00047 }
00048 
00049 
00050 void _ttywrch(int ch) {
00051   sendchar(ch);
00052 }
00053 
00054 
00055 void _sys_exit(int return_code) {
00056 label:  goto label;  /* endless loop */
00057 }