187 lines
6.9 KiB
C
187 lines
6.9 KiB
C
/** Copyright (C) SEGGER Microcontroller GmbH */
|
|
/*********************************************************************
|
|
* SEGGER Microcontroller GmbH *
|
|
* The Embedded Experts *
|
|
**********************************************************************
|
|
* *
|
|
* (c) 1995 - 2019 SEGGER Microcontroller GmbH *
|
|
* *
|
|
* www.segger.com Support: support@segger.com *
|
|
* *
|
|
**********************************************************************
|
|
* *
|
|
* SEGGER RTT * Real Time Transfer for embedded targets *
|
|
* *
|
|
**********************************************************************
|
|
* *
|
|
* All rights reserved. *
|
|
* *
|
|
* SEGGER strongly recommends to not make any changes *
|
|
* to or modify the source code of this software in order to stay *
|
|
* compatible with the RTT protocol and J-Link. *
|
|
* *
|
|
* Redistribution and use in source and binary forms, with or *
|
|
* without modification, are permitted provided that the following *
|
|
* condition is met: *
|
|
* *
|
|
* o Redistributions of source code must retain the above copyright *
|
|
* notice, this condition and the following disclaimer. *
|
|
* *
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
|
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
|
|
* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
|
|
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
|
|
* DAMAGE. *
|
|
* *
|
|
**********************************************************************
|
|
* *
|
|
* RTT version: 6.86e *
|
|
* *
|
|
**********************************************************************
|
|
|
|
---------------------------END-OF-HEADER------------------------------
|
|
File : SEGGER_RTT_Syscalls_GCC.c
|
|
Purpose : Low-level functions for using printf() via RTT in GCC.
|
|
To use RTT for printf output, include this file in your
|
|
application.
|
|
Revision: $Rev: 20755 $
|
|
----------------------------------------------------------------------
|
|
*/
|
|
#if (defined __GNUC__) && !(defined __SES_ARM) && !(defined __CROSSWORKS_ARM) && !(defined __ARMCC_VERSION) && !(defined __CC_ARM)
|
|
|
|
#if 0 /* << EST moved to below */
|
|
#include <reent.h> // required for _write_r
|
|
#endif
|
|
#include "SEGGER_RTT.h"
|
|
|
|
#if McuRTT_CONFIG_PROVIDE_SYSCALLS /* << EST */
|
|
#include <stdio.h> /* for EOF */ /* << EST */
|
|
#include <reent.h> // required for _write_r // << EST moved from above
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Types
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
//
|
|
// If necessary define the _reent struct
|
|
// to match the one passed by the used standard library.
|
|
//
|
|
struct _reent;
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Function prototypes
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
_ssize_t _write (int file, const void *ptr, size_t len);
|
|
_ssize_t _write_r(struct _reent *r, int file, const void *ptr, size_t len);
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Global functions
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
|
|
/*********************************************************************
|
|
*
|
|
* _write()
|
|
*
|
|
* Function description
|
|
* Low-level write function.
|
|
* libc subroutines will use this system routine for output to all files,
|
|
* including stdout.
|
|
* Write data via RTT.
|
|
*/
|
|
_ssize_t _write(int file, const void *ptr, size_t len) {
|
|
(void) file; /* Not used, avoid warning */
|
|
SEGGER_RTT_Write(0, ptr, len);
|
|
return len;
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* _write_r()
|
|
*
|
|
* Function description
|
|
* Low-level reentrant write function.
|
|
* libc subroutines will use this system routine for output to all files,
|
|
* including stdout.
|
|
* Write data via RTT.
|
|
*/
|
|
_ssize_t _write_r(struct _reent *r, int file, const void *ptr, size_t len) {
|
|
(void) file; /* Not used, avoid warning */
|
|
(void) r; /* Not used, avoid warning */
|
|
SEGGER_RTT_Write(0, ptr, len);
|
|
return len;
|
|
}
|
|
|
|
int _putc(int c, __FILE *fp) { /* << EST */
|
|
char ch = c;
|
|
(void)fp; /* Not used, avoid warning */
|
|
SEGGER_RTT_Write(0, &ch, 1);
|
|
return 1;
|
|
}
|
|
|
|
int _putchar(int c) { /* << EST */
|
|
char ch = c;
|
|
SEGGER_RTT_Write(0, &ch, 1);
|
|
return 1;
|
|
}
|
|
|
|
int _getc(__FILE *fp) { /* << EST */
|
|
char ch;
|
|
(void)fp; /* Not used, avoid warning */
|
|
if (SEGGER_RTT_Read(0, &ch, 1)==0) {
|
|
return EOF;
|
|
}
|
|
return ch;
|
|
}
|
|
|
|
int _read(void) {
|
|
uint8_t ch;
|
|
if (SEGGER_RTT_Read(0, &ch, 1)==0) {
|
|
return EOF;
|
|
}
|
|
return (int)ch;
|
|
}
|
|
|
|
int __attribute__((weak)) _isatty(int file __attribute__((unused))) {
|
|
return 1;
|
|
}
|
|
|
|
int __attribute__((weak)) _close(int fildes __attribute__((unused))) {
|
|
return -1;
|
|
}
|
|
|
|
int __attribute__((weak)) _lseek(int file __attribute__((unused)), int ptr __attribute__((unused)), int dir __attribute__((unused))) {
|
|
return -1;
|
|
}
|
|
|
|
#if 0
|
|
int __attribute__((weak)) _fstat (int fd __attribute__((unused)), struct stat *st)
|
|
{
|
|
memset (st, 0, sizeof(*st));
|
|
st->st_mode = S_IFCHR;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif /* McuRTT_CONFIG_PROVIDE_SYSCALLS */ /* << EST */
|
|
|
|
#endif
|
|
/****** End Of File *************************************************/
|
|
|