394 lines
12 KiB
C
394 lines
12 KiB
C
/*********************************************************************
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* SEGGER Microcontroller GmbH *
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* The Embedded Experts *
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**********************************************************************
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* *
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* (c) 1995 - 2021 SEGGER Microcontroller GmbH *
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* *
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* www.segger.com Support: support@segger.com *
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* *
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**********************************************************************
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* *
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* SEGGER SystemView * Real-time application analysis *
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* *
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**********************************************************************
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* *
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* All rights reserved. *
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* *
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* SEGGER strongly recommends to not make any changes *
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* to or modify the source code of this software in order to stay *
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* compatible with the SystemView and RTT protocol, and J-Link. *
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* *
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* Redistribution and use in source and binary forms, with or *
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* without modification, are permitted provided that the following *
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* condition is met: *
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* *
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* o Redistributions of source code must retain the above copyright *
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* notice, this condition and the following disclaimer. *
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* *
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
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* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
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* DAMAGE. *
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* *
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**********************************************************************
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* *
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* SystemView version: 3.30 *
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* *
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**********************************************************************
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---------------------------END-OF-HEADER------------------------------
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File : RTT_Syscalls_KEIL.c
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Purpose : Retargeting module for KEIL MDK-CM3.
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Low-level functions for using printf() via RTT
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Revision: $Rev: 20754 $
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Notes : (1) https://wiki.segger.com/Keil_MDK-ARM#RTT_in_uVision
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----------------------------------------------------------------------
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*/
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#if (defined __CC_ARM) || (defined __ARMCC_VERSION)
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <rt_sys.h>
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#include <rt_misc.h>
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#include "SEGGER_RTT.h"
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/*********************************************************************
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*
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* #pragmas
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*
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**********************************************************************
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*/
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#if __ARMCC_VERSION < 6000000
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#pragma import(__use_no_semihosting)
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#endif
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#ifdef _MICROLIB
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#pragma import(__use_full_stdio)
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#endif
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/*********************************************************************
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*
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* Defines non-configurable
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*
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**********************************************************************
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*/
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/* Standard IO device handles - arbitrary, but any real file system handles must be
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less than 0x8000. */
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#define STDIN 0x8001 // Standard Input Stream
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#define STDOUT 0x8002 // Standard Output Stream
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#define STDERR 0x8003 // Standard Error Stream
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/*********************************************************************
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*
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* Public const
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*
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**********************************************************************
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*/
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#if __ARMCC_VERSION < 5000000
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//const char __stdin_name[] = "STDIN";
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const char __stdout_name[] = "STDOUT";
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const char __stderr_name[] = "STDERR";
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#endif
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/*********************************************************************
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*
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* Public code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* _ttywrch
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*
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* Function description:
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* Outputs a character to the console
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*
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* Parameters:
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* c - character to output
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*
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*/
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void _ttywrch(int c) {
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fputc(c, stdout); // stdout
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fflush(stdout);
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}
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/*********************************************************************
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*
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* _sys_open
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*
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* Function description:
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* Opens the device/file in order to do read/write operations
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*
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* Parameters:
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* sName - sName of the device/file to open
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* OpenMode - This parameter is currently ignored
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*
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* Return value:
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* != 0 - Handle to the object to open, otherwise
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* == 0 -"device" is not handled by this module
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*
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*/
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FILEHANDLE _sys_open(const char * sName, int OpenMode) {
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(void)OpenMode;
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// Register standard Input Output devices.
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if (strcmp(sName, __stdout_name) == 0) {
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return (STDOUT);
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} else if (strcmp(sName, __stderr_name) == 0) {
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return (STDERR);
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} else
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return (0); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_close
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*
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* Function description:
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* Closes the handle to the open device/file
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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*
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* Return value:
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* 0 - device/file closed
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*
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*/
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int _sys_close(FILEHANDLE hFile) {
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(void)hFile;
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return 0; // Not implemented
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}
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/*********************************************************************
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*
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* _sys_write
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*
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* Function description:
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* Writes the data to an open handle.
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* Currently this function only outputs data to the console
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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* pBuffer - Pointer to the data that shall be written
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* NumBytes - Number of bytes to write
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* Mode - The Mode that shall be used
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*
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* Return value:
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* Number of bytes *not* written to the file/device
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*
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*/
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int _sys_write(FILEHANDLE hFile, const unsigned char * pBuffer, unsigned NumBytes, int Mode) {
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int r = 0;
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(void)Mode;
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if (hFile == STDOUT) {
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SEGGER_RTT_Write(0, (const char*)pBuffer, NumBytes);
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return 0;
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}
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return r;
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}
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/*********************************************************************
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*
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* _sys_read
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*
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* Function description:
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* Reads data from an open handle.
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* Currently this modules does nothing.
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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* pBuffer - Pointer to buffer to store the read data
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* NumBytes - Number of bytes to read
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* Mode - The Mode that shall be used
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*
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* Return value:
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* Number of bytes read from the file/device
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*
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*/
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int _sys_read(FILEHANDLE hFile, unsigned char * pBuffer, unsigned NumBytes, int Mode) {
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(void)hFile;
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(void)pBuffer;
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(void)NumBytes;
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(void)Mode;
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return (0); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_istty
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*
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* Function description:
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* This function shall return whether the opened file
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* is a console device or not.
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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*
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* Return value:
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* 1 - Device is a console
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* 0 - Device is not a console
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*
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*/
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int _sys_istty(FILEHANDLE hFile) {
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if (hFile > 0x8000) {
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return (1);
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}
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return (0); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_seek
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*
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* Function description:
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* Seeks via the file to a specific position
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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* Pos -
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*
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* Return value:
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* int -
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*
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*/
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int _sys_seek(FILEHANDLE hFile, long Pos) {
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(void)hFile;
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(void)Pos;
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return (0); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_ensure
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*
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* Function description:
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*
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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*
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* Return value:
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* int -
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*
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*/
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int _sys_ensure(FILEHANDLE hFile) {
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(void)hFile;
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return (-1); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_flen
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*
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* Function description:
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* Returns the length of the opened file handle
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*
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* Parameters:
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* hFile - Handle to a file opened via _sys_open
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*
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* Return value:
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* Length of the file
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*
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*/
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long _sys_flen(FILEHANDLE hFile) {
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(void)hFile;
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return (0); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_tmpnam
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*
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* Function description:
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* This function converts the file number fileno for a temporary
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* file to a unique filename, for example, tmp0001.
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*
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* Parameters:
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* pBuffer - Pointer to a buffer to store the name
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* FileNum - file number to convert
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* MaxLen - Size of the buffer
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*
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* Return value:
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* 1 - Error
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* 0 - Success
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*
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*/
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int _sys_tmpnam(char * pBuffer, int FileNum, unsigned MaxLen) {
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(void)pBuffer;
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(void)FileNum;
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(void)MaxLen;
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return (1); // Not implemented
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}
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/*********************************************************************
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*
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* _sys_command_string
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*
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* Function description:
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* This function shall execute a system command.
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*
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* Parameters:
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* cmd - Pointer to the command string
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* len - Length of the string
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*
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* Return value:
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* == NULL - Command was not successfully executed
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* == sCmd - Command was passed successfully
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*
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*/
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char * _sys_command_string(char * cmd, int len) {
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(void)len;
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return cmd; // Not implemented
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}
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/*********************************************************************
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*
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* _sys_exit
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*
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* Function description:
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* This function is called when the application returns from main
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*
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* Parameters:
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* ReturnCode - Return code from the main function
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*
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*
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*/
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void _sys_exit(int ReturnCode) {
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(void)ReturnCode;
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while (1); // Not implemented
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}
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#if __ARMCC_VERSION >= 5000000
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/*********************************************************************
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*
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* stdout_putchar
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*
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* Function description:
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* Put a character to the stdout
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*
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* Parameters:
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* ch - Character to output
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*
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*
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*/
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int stdout_putchar(int ch) {
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(void)ch;
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return ch; // Not implemented
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}
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#endif
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#endif
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/*************************** End of file ****************************/
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