upm/examples/c/urm37.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

62 lines
1.2 KiB
C

/*
* Author: Jon Trulson <jtrulson@ics.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 "urm37.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 URM37 sensor on analog pin A0, reset pin on D2,
// trigger pin on D3 with an analog reference voltage of 5.0
urm37_context sensor = urm37_init(0, 2, 3, 5.0, 0, true);
if (!sensor)
{
printf("urm37_init() failed.\n");
return(1);
}
// Every half a second, sample the URM37 and output the measured
// distance in cm.
while (shouldRun)
{
float distance;
urm37_get_distance(sensor, &distance, 0);
printf("Detected distance (cm): %f\n", distance);
upm_delay_ms(500);
}
//! [Interesting]
printf("Exiting\n");
urm37_close(sensor);
return 0;
}