osd-contiki/platform/mbxxx/dev/i2c.h
Maria Laura Stefanizzi c7b1248aac mbxxx I2C driver.
This patch add the I2C driver for mbxxx platform to communicate with
devices connected to the SC2 I2C bus.
Signed-off-by: Maria Laura Stefanizzi <laura28582@gmail.com>
2013-11-27 15:40:07 +01:00

55 lines
2 KiB
C

/*
* Copyright (c) 2013, IDentification Automation Laboratory
* IDALab (http://www.idalab.unisalento.it)
* Department of Innovation Engineering - University of Salento
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/**
* \file i2c.h
* \brief I2C bus master driver for mbxxx platform.
* \author Maria Laura Stefanizzi <laura28582@gmail.com>
* \date 2013-11-20
*/
#ifndef I2C_H
#define I2C_H
#define SC2_STAT(FLAG) (SC2_TWISTAT & FLAG)
void i2c_enable(void);
void i2c_disable(void);
void i2c_start(void);
void i2c_stop(void);
void i2c_write(uint8_t data);
uint8_t i2c_read(int ack);
#endif /* I2C_H */