firmware/drivers/pcf50606.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Rob Purchase
  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 #include "pcf50606.h"
  22 #include "i2c.h"
  23
  24 #define PCF50606_ADDR 0x10
  25
  26 int pcf50606_write(int address, unsigned char val)
  27 {
  28     unsigned char data[] = { address, val };
  29     return i2c_write(PCF50606_ADDR, data, 2);
  30 }
  31
  32 int pcf50606_write_multiple(int address, const unsigned char* buf, int count)
  33 {
  34     int i;
  35
  36     for (i = 0; i < count; i++)
  37         pcf50606_write(address + i, buf[i]);
  38
  39     return 0;
  40 }
  41
  42 int pcf50606_read(int address)
  43 {
  44     unsigned char val = -1;
  45     i2c_readmem(PCF50606_ADDR, address, &val, 1);
  46     return val;
  47 }
  48
  49 int pcf50606_read_multiple(int address, unsigned char* buf, int count)
  50 {
  51     return i2c_readmem(PCF50606_ADDR, address, buf, count);
  52 }
  53
  54 void pcf50606_init(void)
  55 {
  56     // TODO
  57 }