source: flair-src/trunk/lib/FlairCore/src/Unix_I2cPort.cpp@ 2

// %flair:license{
// This file is part of the Flair framework distributed under the
// CECILL-C License, Version 1.0.
// %flair:license}
//  created:    2014/08/28
//  filename:   Unix_I2cPort.cpp
//
//  author:     Guillaume Sanahuja
//              Copyright Heudiasyc UMR UTC/CNRS 7253
//
//  version:    $Id: $
//
//  purpose:    Class for unix i2c port
//
//
/*********************************************************************/

#include "Unix_I2cPort.h"
#include <errno.h>
#include <fcntl.h>   /* File control definitions */
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/i2c-dev.h>


using std::string;

namespace flair
{
namespace core
{

Unix_I2cPort::Unix_I2cPort(const Object* parent,string name,string device) : I2cPort(parent,name)
{
    //open port
    fd = open( device.c_str(), O_RDWR );
        if (fd == -1)
        {
                Err("open_port: Unable to open %s\n",device.c_str());
        }
}

Unix_I2cPort::~Unix_I2cPort()
{
    close(fd);
}

void Unix_I2cPort::SetRxTimeout(core::Time timeout_ns)
{
    Warn("not implemented\n");
}

void Unix_I2cPort::SetTxTimeout(core::Time timeout_ns)
{
    Warn("not implemented\n");
}

int Unix_I2cPort::SetSlave(uint16_t address)
{
    int err=ioctl( fd, I2C_SLAVE_FORCE, address);
        if( err < 0 )
    {
        Err("Failed to set slave address\n");
    }

        return err;
}

ssize_t Unix_I2cPort::Write(const void *buf,size_t nbyte)
{
    return write(fd,buf, nbyte);
}

ssize_t Unix_I2cPort::Read(void *buf,size_t nbyte)
{
    return read(fd,buf, nbyte);
}

} // end namespace core
} // end namespace flair