/* * Author: Jon Trulson * 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 #include #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; }