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//*****************************************************************************
// +--+
// | ++----+
// +-++ |
// | |
// +-+--+ |
// | +--+--+
// +----+ Copyright (c) 2009 Code Red Technologies Ltd.
//
// consoleprint.c - provides a "print string to console" function that uses
// the CodeRed semihosting debug channel functionality.
//
// Software License Agreement
//
// The software is owned by Code Red Technologies and/or its suppliers, and is
// protected under applicable copyright laws. All rights are reserved. Any
// use in violation of the foregoing restrictions may subject the user to criminal
// sanctions under applicable laws, as well as to civil liability for the breach
// of the terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD.
//
//*****************************************************************************
#include <stdio.h>
#include <string.h>
#include "consoleprint.h"
/*
* Prototype for Code Red library stub function that carries out
* semihosting "SYS_WRITE" operation. Note that Code Red makes no
* guarantees that the interface to this stub function will not
* change in future versions of the tools.
*/
#if (defined(__NEWLIB__))
#define LIBSTUB_SYS_WRITE _swiwrite
#else // __REDLIB__
#define LIBSTUB_SYS_WRITE __write
#endif
int LIBSTUB_SYS_WRITE (int, char *, int);
/*
* consoleprint() - provides a "print string to console" function that uses
* the CodeRed semihosting debug channel functionality. Because this can
* send a full string in one operation, rather than a single character (as
* using printf will) this will provide faster prints to the console.
*
* Input - pointer to zero-terminated character string
* Returns 0 if successful
*
* Note that in order to consoleprint() to actually display to the console,
* the semihosting interface using stdout must have been setup. The easiest
* way to do this is to call printf() once at the start of your application
*/
int consoleprint(char *cpstring)
{
int slen, res;
// Calculate length of string
slen = strlen (cpstring);
// Call function to carry out semihosting "SYS_WRITE" operation
res = LIBSTUB_SYS_WRITE (0, cpstring,slen); // Note that '0' represents stdout
return res;
}
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