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72 lines
1.6 KiB
C++
72 lines
1.6 KiB
C++
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2015 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 <iostream>
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#include <signal.h>
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#include <string>
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#include "mhz16.hpp"
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#include "upm_utilities.h"
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using namespace std;
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bool shouldRun = true;
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void
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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
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main(int argc, char** argv)
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{
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signal(SIGINT, sig_handler);
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//! [Interesting]
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// Instantiate a MHZ16 serial CO2 sensor on uart 0.
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// This example was tested on the Grove CO2 sensor module.
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upm::MHZ16 co2(0);
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// make sure port is initialized properly. 9600 baud is the default.
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if (!co2.setupTty(B9600)) {
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cerr << "Failed to setup tty port parameters" << endl;
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return 1;
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}
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cout << "Make sure that the sensor has had at least 3 minutes to warm up" << endl;
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cout << "or you will not get valid results." << endl;
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cout << "The temperature reported is not the ambient temperature, " << endl;
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cout << "but rather the temperature of the sensor elements." << endl;
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upm_delay(1);
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while (shouldRun) {
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if (!co2.getData()) {
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cerr << "Failed to retrieve data" << endl;
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continue;
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}
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cout << "CO2 concentration: " << co2.getGas() << " PPM, "
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<< "Temperature (in C): " << co2.getTemperature() << endl;
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upm_delay(2);
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}
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//! [Interesting]
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cout << "Exiting..." << endl;
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return 0;
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}
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