upm/examples/c/dfrph.c
Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

63 lines
1.1 KiB
C

/*
* Author: Noel Eck <noel.eck@intel.com>
* Copyright (c) 2016 Intel Corporation.
*
* This program and the accompanying materials are made available under the
* terms of the The MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
*/
#include <unistd.h>
#include <signal.h>
#include "dfrph.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 dfrph sensor on analog pin A0
dfrph_context sensor = dfrph_init(0);
if (!sensor)
{
printf("dfrph_init() failed.\n");
return(1);
}
// Every half a second, sample the sensor output
while (shouldRun)
{
float volts = 0.0, pH = 0.0;
dfrph_get_raw_volts(sensor, &volts);
dfrph_get_ph(sensor, &pH);
printf("Detected volts: %0.03f\n", volts);
printf("pH value: %0.03f\n", pH);
upm_delay_ms(500);
}
//! [Interesting]
printf("Exiting\n");
dfrph_close(sensor);
return 0;
}