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/* $Id: drv_generic_i2c.h 1157 2011-07-27 05:58:08Z michael $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_generic_i2c.h $
*
* generic driver helper for i2c displays
*
* Copyright (C) 2005 Luis Correia <lfcorreia@users.sf.net>
* Copyright (C) 2005 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
*
* exported fuctions:
*
* int drv_generic_i2c_open (void)
* reads 'Port' entry from config and opens
* the i2c port
* returns 0 if ok, -1 on failure
*
* int drv_generic_i2c_close (void)
* closes i2c port
* returns 0 if ok, -1 on failure
*
* unsigned char drv_generic_i2c_wire (char *name, char *deflt)
* reads wiring for one data signal from config
* returns 1<<bitpos or 255 on error
*
* void drv_generic_i2c_data (unsigned char value)
* put data bits on DB1..DB8
*
* void drv_generic_i2c_command(unsigned char command, unsigned char *data,unsigned char length)
* send command and the data to the i2c device
*
*/
#ifndef _DRV_GENERIC_I2C_H_
#define _DRV_GENERIC_I2C_H_
int drv_generic_i2c_open(const char *section, const char *driver);
int drv_generic_i2c_close(void);
unsigned char drv_generic_i2c_wire(const char *name, const char *deflt);
void drv_generic_i2c_byte(const unsigned char data);
void drv_generic_i2c_data(const unsigned char data);
void drv_generic_i2c_command(const unsigned char command, /*const */ unsigned char *data, const unsigned char length);
#endif
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