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75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <unistd.h>
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#include <signal.h>
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#include "dfrorp.h"
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#include "upm_utilities.h"
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bool shouldRun = true;
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void sig_handler(int signo)
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{
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if (signo == SIGINT)
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shouldRun = false;
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}
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int main()
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{
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signal(SIGINT, sig_handler);
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//! [Interesting]
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// Instantiate a DFRobot ORP sensor on analog pin A0 with an analog
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// reference voltage of 5.0.
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dfrorp_context sensor = dfrorp_init(0, 5.0);
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if (!sensor)
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{
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printf("dfrorp_init() failed.\n");
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return(1);
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}
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// To calibrate:
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//
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// Disconnect the sensor probe (but leave the sensor interface board
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// connected). Then run one of the examples while holding down the
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// 'calibrate' button on the device. Read the ORP value reported
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// (it should be fairly small).
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//
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// This value is what you should supply to
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// dfrorp_set_orp_cal_offset(). Then reconnect the probe to the
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// interface board and you should be ready to go.
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//
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// DO NOT press the calibrate button on the interface board while
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// the probe is attached or you can permanently damage the probe.
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dfrorp_set_calibration_offset(sensor, 0.97);
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// Every second, update and print values
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while (shouldRun)
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{
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dfrorp_update(sensor);
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printf("ORP = %f mV\n", dfrorp_get_orp(sensor));
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upm_delay(1);
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}
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//! [Interesting]
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printf("Exiting...\n");
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dfrorp_close(sensor);
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return 0;
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}
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