upm/examples/c/mma7660.c

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/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 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 <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include "upm_utilities.h"
#include "mma7660.h"
int shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main(int argc, char **argv)
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate an MMA7660 on I2C bus 0
mma7660_context accel = mma7660_init(MMA7660_DEFAULT_I2C_BUS,
MMA7660_DEFAULT_I2C_ADDR);
if (!accel)
{
printf("mma7660_init() failed\n");
return 1;
}
// place device in standby mode so we can write registers
mma7660_set_mode_standby(accel);
// enable 64 samples per second
mma7660_set_sample_rate(accel, MMA7660_AUTOSLEEP_64);
// place device into active mode
mma7660_set_mode_active(accel);
while (shouldRun)
{
float ax, ay, az;
mma7660_get_acceleration(accel, &ax, &ay, &az);
printf("Acceleration: x = %f y = %f z = %f\n\n",
ax, ay, az);
upm_delay_ms(500);
}
printf("Exiting...\n");
mma7660_close(accel);
//! [Interesting]
return 0;
}