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