upm/examples/c/bmpx8x.c

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/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2017 Intel Corporation.
*
* The MIT License
*
* 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 <stdio.h>
#include <signal.h>
#include "upm_utilities.h"
#include "bmpx8x.h"
bool shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main(int argc, char **argv)
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a BMPX8X instance using default i2c bus and address
bmpx8x_context sensor = bmpx8x_init(BMPX8X_DEFAULT_I2C_BUS,
BMPX8X_DEFAULT_I2C_ADDR);
if (!sensor)
{
printf("bmpx8x_init() failed.\n");
return 1;
}
// Print the pressure, altitude, sea level, and
// temperature values every 0.5 seconds
while (shouldRun)
{
if (bmpx8x_update(sensor))
{
printf("bmpx8x_update() failed\n");
bmpx8x_close(sensor);
return 1;
}
// assume sea level pressure is 101325 Pa.
float altitude = bmpx8x_get_altitude(sensor, 101325);
int sealevel = bmpx8x_get_sealevel_pressure(sensor, altitude);
printf("Pressure: %d Pa, Temperature: %f C, "
"Altitude %f m, Sea level %d Pa\n",
bmpx8x_get_pressure(sensor),
bmpx8x_get_temperature(sensor),
altitude,
sealevel);
upm_delay_ms(500);
}
printf("Exiting...\n");
bmpx8x_close(sensor);
//! [Interesting]
return 0;
}