upm/examples/c/sht1x.c

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2016 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 <signal.h>

#include "sht1x.h"
#include "upm_utilities.h"

bool shouldRun = true;

void sig_handler(int signo)
{
    if (signo == SIGINT)
        shouldRun = false;
}

int main()
{
    signal(SIGINT, sig_handler);

    //! [Interesting]

    // Instantiate a SHT1X sensor using D2 as the clock, and D3 as the
    // data pin.
    sht1x_context sensor = sht1x_init(2, 3);

    if (!sensor)
    {
        printf("sht1x_init() failed.\n");
        return 1;
    }

    // Every 2 seconds, update and print values
    while (shouldRun)
    {
        if (sht1x_update(sensor))
        {
            printf("sht1x_update() failed, exiting.\n");
            break;
        }

        printf("Temperature: %f C\n", sht1x_get_temperature(sensor));
        printf("Humidity:    %f RH\n", sht1x_get_humidity(sensor));
        printf("\n");

        upm_delay(2);
    }

    //! [Interesting]

    printf("Exiting\n");

    sht1x_close(sensor);

    return 0;
}