firmware/logf.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Daniel Stenberg
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 /*
  23  * logf() logs MAX_LOGF_ENTRY (21) bytes per entry in a circular buffer. Each
  24  * logged string is space- padded for easier and faster output on screen. Just
  25  * output MAX_LOGF_ENTRY characters on each line. MAX_LOGF_ENTRY bytes fit
  26  * nicely on the iRiver remote LCD (128 pixels with an 8x6 pixels font).
  27  */
  28
  29 #include <string.h>
  30 #include <stdio.h>
  31 #include <stdarg.h>
  32 #include "config.h"
  33 #include "lcd-remote.h"
  34 #include "logf.h"
  35 #include "serial.h"
  36
  37 #ifdef HAVE_USBSTACK
  38 #include "usb_core.h"
  39 #include "usbstack/usb_serial.h"
  40 #endif
  41
  42 /* Only provide all this if asked to */
  43 #ifdef ROCKBOX_HAS_LOGF
  44
  45 #ifndef __PCTOOL__
  46 unsigned char logfbuffer[MAX_LOGF_LINES][MAX_LOGF_ENTRY];
  47 int logfindex;
  48 bool logfwrap;
  49 #endif
  50
  51 #ifdef HAVE_REMOTE_LCD
  52 static void displayremote(void)
  53 {
  54     /* TODO: we should have a debug option that enables/disables this! */
  55     int w, h;
  56     int lines;
  57     int columns;
  58     int i;
  59     int index;
  60
  61     lcd_remote_getstringsize("A", &w, &h);
  62     lines = LCD_REMOTE_HEIGHT/h;
  63     columns = LCD_REMOTE_WIDTH/w;
  64     lcd_remote_clear_display();
  65
  66     index = logfindex;
  67     for(i = lines-1; i>=0; i--) {
  68         unsigned char buffer[columns+1];
  69
  70         if(--index < 0) {
  71             if(logfwrap)
  72                 index = MAX_LOGF_LINES-1;
  73             else
  74                 break; /* done */
  75         }
  76
  77         memcpy(buffer, logfbuffer[index], columns);
  78         buffer[columns]=0;
  79         lcd_remote_puts(0, i, buffer);
  80     }
  81     lcd_remote_update();
  82 }
  83 #else
  84 #define displayremote()
  85 #endif
  86
  87 #ifdef __PCTOOL__
  88 void _logf(const char *format, ...)
  89 {
  90     char buf[1024];
  91     va_list ap;
  92     va_start(ap, format);
  93
  94     vsnprintf(buf, sizeof buf, format, ap);
  95     printf("DEBUG: %s\n", buf);
  96 }
  97 #else
  98 void _logf(const char *format, ...)
  99 {
 100     int len;
 101     unsigned char *ptr;
 102     va_list ap;
 103     va_start(ap, format);
 104
 105     if(logfindex >= MAX_LOGF_LINES) {
 106         /* wrap */
 107         logfwrap = true;
 108         logfindex = 0;
 109     }
 110     ptr = logfbuffer[logfindex];
 111     len = vsnprintf(ptr, MAX_LOGF_ENTRY, format, ap);
 112 #ifdef HAVE_SERIAL
 113     serial_tx(ptr);
 114     serial_tx("\r\n");
 115 #endif
 116 #ifdef USB_SERIAL
 117     usb_serial_send(ptr,len);
 118     usb_serial_send("\r\n",2);
 119 #endif
 120
 121     va_end(ap);
 122     if(len < MAX_LOGF_ENTRY)
 123         /* pad with spaces up to the MAX_LOGF_ENTRY byte border */
 124         memset(ptr+len, ' ', MAX_LOGF_ENTRY-len);
 125
 126     logfindex++; /* leave it where we write the next time */
 127
 128     displayremote();
 129 }
 130 #endif
 131
 132 #endif