/* * Author: Jon Trulson * Copyright (c) 2015 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 #include int shouldRun = true; void sig_handler(int signo) { if (signo == SIGINT) shouldRun = false; } int main() { signal(SIGINT, sig_handler); //! [Interesting] // This example uses a simple method to determine current status // Instantiate an RPR220 digital pin D2 // This was tested on the Grove IR Reflective Sensor rpr220_context sensor = rpr220_init(2); if (!sensor) { printf("rpr220_init() failed\n"); return 1; } while (shouldRun) { if (rpr220_black_detected(sensor)) printf("Black detected\n"); else printf("Black NOT detected\n"); upm_delay_ms(100); // 100ms } printf("Exiting...\n"); rpr220_close(sensor); //! [Interesting] return 0; }