upm/examples/c++/wfs.cxx
Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

67 lines
1.5 KiB
C++

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2014 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 <iostream>
#include <signal.h>
#include "upm_utilities.h"
#include "wfs.hpp"
using namespace std;
int shouldRun = true;
void
sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int
main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a Water Flow Sensor on digital pin D2. This must
// be an interrupt capable pin.
upm::WFS flow(2);
// set the flow counter to 0 and start counting
flow.clearFlowCounter();
flow.startFlowCounter();
while (shouldRun) {
// we grab these (millis and flowCount) just for display
// purposes in this example
uint32_t millis = flow.getMillis();
uint32_t flowCount = flow.flowCounter();
float fr = flow.flowRate();
// output milliseconds passed, flow count, and computed flow rate
cout << "Millis: " << millis << " Flow Count: " << flowCount;
cout << " Flow Rate: " << fr << " LPM" << endl;
// best to gather data for at least one second for reasonable
// results.
upm_delay(2);
}
flow.stopFlowCounter();
//! [Interesting]
cout << "Exiting..." << endl;
return 0;
}