Diff: SEGGER_RTT_Syscalls_GCC.c

Revision:

0:e61e7fc7cfe1

Child:

1:5acbf302ee01

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SEGGER_RTT_Syscalls_GCC.c	Fri Sep 22 10:36:47 2017 +0000
@@ -0,0 +1,112 @@
+/*********************************************************************
+*               SEGGER MICROCONTROLLER GmbH & Co. KG                 *
+*       Solutions for real time microcontroller applications         *
+**********************************************************************
+*                                                                    *
+*       (c) 2014 - 2015  SEGGER Microcontroller GmbH & Co. KG        *
+*                                                                    *
+*       www.segger.com     Support: support@segger.com               *
+*                                                                    *
+**********************************************************************
+*                                                                    *
+* All rights reserved.                                               *
+*                                                                    *
+* * This software may in its unmodified form be freely redistributed *
+*   in source form.                                                  *
+* * The source code may be modified, provided the source code        *
+*   retains the above copyright notice, this list of conditions and  *
+*   the following disclaimer.                                        *
+* * Modified versions of this software in source or linkable form    *
+*   may not be distributed without prior consent of SEGGER.          *
+* * This software may only be used for communication with SEGGER     *
+*   J-Link debug probes.                                             *
+*                                                                    *
+* 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.
+----------------------------------------------------------------------
+*/
+//#include <reent.h>  // required for _write_r
+#include "SEGGER_RTT.h"
+#include <stdint.h>
+typedef uint32_t size_t;
+
+/*********************************************************************
+*
+*       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, 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.
+*/
+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, size_t len) {
+  (void) file;  /* Not used, avoid warning */
+  (void) r;     /* Not used, avoid warning */
+  SEGGER_RTT_Write(0, ptr, len);
+  return len;
+}
+
+/****** End Of File *************************************************/