/********************************************************************* | |
* SEGGER Microcontroller GmbH * | |
* Solutions for real time microcontroller applications * | |
********************************************************************** | |
* * | |
* (c) 1995 - 2018 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 * | |
* conditions are met: * | |
* * | |
* o Redistributions of source code must retain the above copyright * | |
* notice, this list of conditions and the following disclaimer. * | |
* * | |
* o Redistributions in binary form must reproduce the above * | |
* copyright notice, this list of conditions and the following * | |
* disclaimer in the documentation and/or other materials provided * | |
* with the distribution. * | |
* * | |
* o Neither the name of SEGGER Microcontroller GmbH * | |
* nor the names of its contributors may be used to endorse or * | |
* promote products derived from this software without specific * | |
* prior written permission. * | |
* * | |
* 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. * | |
* * | |
********************************************************************** | |
---------------------------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: 9599 $ | |
---------------------------------------------------------------------- | |
*/ | |
#if (defined __GNUC__) && !(defined __SES_ARM) && !(defined __CROSSWORKS_ARM) | |
#include <reent.h> // required for _write_r | |
#include "SEGGER_RTT.h" | |
/********************************************************************* | |
* | |
* Types | |
* | |
********************************************************************** | |
*/ | |
// | |
// If necessary define the _reent struct | |
// to match the one passed by the used standard library. | |
// | |
struct _reent; | |
/********************************************************************* | |
* | |
* Function prototypes | |
* | |
********************************************************************** | |
*/ | |
int _write(int file, char *ptr, int len); | |
int _write_r(struct _reent *r, int file, const void *ptr, int 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. | |
*/ | |
int _write(int file, char *ptr, int 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. | |
*/ | |
int _write_r(struct _reent *r, int file, const void *ptr, int len) { | |
(void) file; /* Not used, avoid warning */ | |
(void) r; /* Not used, avoid warning */ | |
SEGGER_RTT_Write(0, ptr, len); | |
return len; | |
} | |
#endif | |
/****** End Of File *************************************************/ |