bootloader/sansa_as3525.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Rafaël Carré
  11  *
  12  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  13  * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24
  25 #include <stdio.h>
  26 #include <system.h>
  27 #include <inttypes.h>
  28 #include "lcd.h"
  29 #include "common.h"
  30 #include "config.h"
  31 #include "as3525-codec.h"
  32
  33 int show_logo(void);
  34 void main(void)
  35 {
  36     int i;
  37     unsigned char buf[8];
  38
  39     lcd_init_device();
  40     lcd_clear_display();
  41
  42     lcd_update();
  43
  44 #ifdef HAVE_LCD_ENABLE
  45     lcd_enable(true);
  46 #endif
  47
  48     show_logo();
  49
  50     /* show player id to demonstrate communication with codec part */
  51     as3525_codec_init();
  52     for (i = 0; i < 8; i++) {
  53         buf[i] = as3525_codec_read(0x38 + i);
  54     }
  55     printf("ID: %02X%02X%02X%02X%02X%02X%02X%02X", buf[7], buf[6], buf[5], buf[4], buf[3], buf[2], buf[1], buf[0]);
  56
  57 #ifdef SANSA_CLIP
  58     /* Use hardware scrolling */
  59
  60     lcd_write_command(0x26); /* scroll setup */
  61     lcd_write_command(0x01); /* columns scrolled per step */
  62     lcd_write_command(0x00); /* start page */
  63     lcd_write_command(0x00); /* steps freqency */
  64     lcd_write_command(0x07); /* end page (including) */
  65
  66     lcd_write_command(0x2F); /* start horizontal scrolling */
  67 #endif
  68
  69     /* never returns */
  70     while(1) ;
  71 }