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mraa/src/i2c/i2c.cxx
Brendan Le Foll 9994ea855c maa: Refactor maa build system and partly implement i2c
* API headers moved to api/
* smbus file added from libi2c and kernel i2c header cleaned up
* fix compilation of swig and use i2c.h header

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
2014-04-10 16:53:19 +01:00

89 lines
2.1 KiB
C++

/*
* Copyright (C) Intel Corporation.
*
* Author: Brendan Le Foll
*
* Copyright © 2014 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "i2c.h"
#include "smbus.h"
using namespace maa;
I2C::I2C(unsigned int sda, unsigned int scl)
{
// Galileo only has one I2C device which is always /dev/i2c-0
// reliability is a fickle friend!
if (i2c_handle = open("/dev/i2c-0", O_RDWR) < 1) {
fprintf(stderr, "Failed to open requested i2c port");
}
}
void
I2C::frequency(int hz)
{
_hz = hz;
}
int
I2C::read(int address, char *data, int length, bool repeated)
{
return 0;
}
int
I2C::read(int ack)
{
int byte;
if (byte = i2c_smbus_read_byte(i2c_handle) < 0) {
return -1;
}
return byte;
}
int
I2C::write(int address, const char *data, int length, bool repeated)
{
return 0;
}
int
I2C::write(int data)
{
}
void
I2C::start()
{
}
void
I2C::stop()
{
}
void
I2C::aquire()
{
}