firmware/export/i2c.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Linus Nielsen Feltzing
  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 #ifndef I2C_H
  22 #define I2C_H
  23
  24 extern void i2c_init(void);
  25 extern void i2c_begin(void);
  26 extern void i2c_end(void);
  27 extern int i2c_write(int device, const unsigned char* buf, int count );
  28 extern int i2c_read(int device, unsigned char* buf, int count );
  29 extern int i2c_readmem(int device, int address, unsigned char* buf, int count );
  30 extern int i2c_writemem(int device, int address, const unsigned char* buf, int count );
  31 extern void i2c_outb(unsigned char byte);
  32 extern unsigned char i2c_inb(int ack);
  33 extern void i2c_start(void);
  34 extern void i2c_stop(void);
  35 extern void i2c_ack(int bit);
  36 extern int i2c_getack(void);
  37
  38 #endif