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initial logf() work, not added to SOURCES yet (on purpose) 

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6514 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Daniel Stenberg 2005-05-23 22:47:42 +00:00
parent 5272d34cf5
commit b033f6cf4e
2 changed files with 89 additions and 0 deletions
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29
firmware/export/logf.h Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Daniel Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef LOGF_H
#define LOGF_H
extern unsigned char logfbuffer[];
extern unsigned char *logfptr;
extern unsigned char *logfend;
extern bool logfwrap;
void logf(const char *format, ...);
#endif /* LOGF_H */

60
firmware/logf.c Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Daniel Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/*
* logf() logs 16 bytes in a circular buffer. Each logged string is space-
* padded for easier and faster output on screen. Just output 16 lines on each
* line. 16 bytes fit nicely on the iRiver remote LCD (128 pixels with an 8
* pixels font).
*/
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <sprintf.h>
#include <stdbool.h>
#include "config.h"
#define MAX_LOGF_LINES 1000
#define MAX_LOGF_DATASIZE (16*MAX_LOGF_LINES)
unsigned char logfbuffer[MAX_LOGF_DATASIZE];
unsigned char *logfend=&logfbuffer[MAX_LOGF_DATASIZE];
unsigned char *logfptr=&logfbuffer[0];
bool logfwrap;
void logf(const char *format, ...)
{
int len;
va_list ap;
va_start(ap, format);
if(logfptr >= logfend) {
/* wrap */
logfwrap = true;
logfptr = &logfbuffer[0];
}
len = vsnprintf(logfptr, 16, format, ap);
va_end(ap);
if(len < 16)
/* pad with spaces up to the 16 byte border */
memset(logfptr+len, ' ', 16-len);
logfptr += 16; /* leave it where we write the next time */
}