/* * Author: Jon Trulson * 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 #include #include "dfrorp.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 DFRobot ORP sensor on analog pin A0 with an analog // reference voltage of 5.0. dfrorp_context sensor = dfrorp_init(0, 5.0); if (!sensor) { printf("dfrorp_init() failed.\n"); return(1); } // To calibrate: // // Disconnect the sensor probe (but leave the sensor interface board // connected). Then run one of the examples while holding down the // 'calibrate' button on the device. Read the ORP value reported // (it should be fairly small). // // This value is what you should supply to // dfrorp_set_orp_cal_offset(). Then reconnect the probe to the // interface board and you should be ready to go. // // DO NOT press the calibrate button on the interface board while // the probe is attached or you can permanently damage the probe. dfrorp_set_calibration_offset(sensor, 0.97); // Every second, update and print values while (shouldRun) { dfrorp_update(sensor); printf("ORP = %f mV\n", dfrorp_get_orp(sensor)); upm_delay(1); } //! [Interesting] printf("Exiting...\n"); dfrorp_close(sensor); return 0; }