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/****************************************************************************
*
* Copyright (c) 2006 Dave Hylands <dhylands@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*
****************************************************************************/
/**
*
* @file i2c-api.h
*
* @brief This file contains definitions for performing i2c operations
* on the gumstix.
*
****************************************************************************/
#if !defined( I2C_API_H )
#define I2C_API_H
// ---- Include Files -------------------------------------------------------
#include <inttypes.h>
#include "i2c.h"
// ---- Constants and Types -------------------------------------------------
#define I2C_USE_CRC 1
#define I2C_NO_CRC 0
// ---- Variable Externs ----------------------------------------------------
// ---- Function Prototypes -------------------------------------------------
void I2cSetSlaveAddress
(
int i2cDev, ///< Handle to i2c-dev file
I2C_Addr_t i2cAddr, ///< 7 bit i2c address to use
int useCrc ); ///< Should CRC's be used?
int I2cTransfer
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
const void *wrData, ///< Data to write
uint8_t wrLen, ///< Number of bytes to write (or in 0x80 for a block write)
void *rdData, ///< Place to store data read
uint8_t rdLen, ///< Number of bytes to read (or in 0x80 for a block read)
uint8_t *bytesReadp ///< Place to store number of bytes read
);
int I2cProcessBlock
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
const void *wrData, ///< Data to write
uint8_t wrLen, ///< Number of bytes to write
void *rdData, ///< Place to store data read
uint8_t rdLen, ///< Number of bytes to read
uint8_t *bytesReadp ///< Place to store number of bytes read
);
int I2cReadBlock
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
void *rdData, ///< Place to store data read
uint8_t rdLen, ///< Number of bytes to read
uint8_t *bytesReadp ///< Place to store number of bytes read
);
int I2cReadByte
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
uint8_t *rdByte ///< Place to store byte to read
);
int I2cReadBytes
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
void *rdByte, ///< Place to store bytes read
uint8_t rdLen ///< Number of bytes to read
);
int I2cWriteBlock
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
const void *wrData, ///< Data to write
uint8_t wrLen ///< Number of bytes to write
);
int I2cWriteByte
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
uint8_t wrByte ///< Byte to write
);
int I2cWriteBytes
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t cmd, ///< Command to send
const void *wrByte, ///< Bytes to write
uint8_t wrLen ///< Number of bytes to write
);
int I2cReceiveByte
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t *rdByte ///< Place to store byte read
);
int I2cReceiveBytes
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t *rdData, ///< Place to store byte read
uint8_t rdLen ///< Number of bytes to read
);
int I2cSendByte
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t wrByte ///< Byte to write
);
int I2cSendBytes
(
int i2cDev, ///< Handle to i2c-dev file
uint8_t *wrData, ///< Pointer to data to write.
uint8_t wrLen ///< Number of bytes to write.
);
#endif // I2C_API_H
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