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/*
* Copyright (C) Koen Kooi <<koen@beagleboard.org>
*
* The pico DLP Controller Driver is free software; you
* can redistribute it and/or modify it under the terms of the GNU
* General Public License version 3 as published by the Free Software
* Foundation.
*
* The pico DLP Controller Driver 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 The pico DLP Controller Driver ; if not,
* write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include "i2c-dev.h"
#define ADDRESS 0x1a
int
main (int argc, char **argv)
{
int fd = 0;
/* Attempt to open I2C device (/dev/i2c-3) */
fd = open ("/dev/i2c-3", O_RDWR);
if (fd == -1)
{
fprintf (stderr, "Failed to open pico DLP I2C device: %m\n");
exit (0);
}
/* Set the slave address of type I2C_SLAVE */
if (ioctl (fd, I2C_SLAVE, ADDRESS) < 0)
{
fprintf (stderr, "Failed to access pico DLp: %m\n");
exit (0);
}
/* Attempt to enable checksumming */
if (ioctl (fd, I2C_PEC, 1) < 0)
{
fprintf (stderr, "Failed to enable PEC\n");
exit (0);
}
uint16_t hflip; /* The horizontal flip bit */
uint16_t vflip; /* The vertical flip bit */
/* Read the status bits for horizontal and vertical vlip */
hflip = i2c_smbus_read_word_data (fd, 0x08);
vflip = i2c_smbus_read_word_data (fd, 0x09);
/* Output the values to stdout */
fprintf (stdout, "hflip: %d - vflip: %d\n", hflip, vflip);
return 0;
}
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