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67 lines
1.3 KiB
C++
67 lines
1.3 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 <stddef.h>
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#include "a110x.hpp"
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#include "upm_utilities.h"
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using namespace std;
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int 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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// Our pulse counter
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volatile unsigned int counter = 0;
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// Our interrupt handler
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void
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hallISR(void* arg)
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{
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counter++;
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}
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int
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main()
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{
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signal(SIGINT, sig_handler);
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//! [Interesting]
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// Instantiate an A110X sensor on digital pin D2
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upm::A110X hall(2);
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// This example uses a user-supplied interrupt handler to count
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// pulses that occur when a magnetic field of the correct polarity
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// is detected. This could be used to measure the rotations per
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// minute (RPM) of a rotor for example.
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hall.installISR(hallISR, NULL);
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while (shouldRun) {
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cout << "Pulses detected: " << counter << endl;
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upm_delay(1);
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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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