diff options
| -rw-r--r-- | firmware/export/logf.h | 29 | ||||
| -rw-r--r-- | firmware/logf.c | 60 |
2 files changed, 89 insertions, 0 deletions
diff --git a/firmware/export/logf.h b/firmware/export/logf.h new file mode 100644 index 0000000000..dc8c699ab2 --- /dev/null +++ b/firmware/export/logf.h @@ -0,0 +1,29 @@ +/*************************************************************************** + * __________ __ ___. + * 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 */ diff --git a/firmware/logf.c b/firmware/logf.c new file mode 100644 index 0000000000..2cb5383783 --- /dev/null +++ b/firmware/logf.c @@ -0,0 +1,60 @@ +/*************************************************************************** + * __________ __ ___. + * 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 */ +} |