2014-08-26 20:30:41 +00:00
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/*
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* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <iostream>
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#include <signal.h>
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2017-08-30 15:00:29 -07:00
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#include <stdint.h>
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#include <stdio.h>
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#include "gas.hpp"
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#include "mq3.hpp"
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2014-08-26 20:30:41 +00:00
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int is_running = 0;
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2017-08-30 15:00:29 -07:00
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uint16_t buffer[128];
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2014-08-26 20:30:41 +00:00
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void
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sig_handler(int signo)
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{
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printf("got signal\n");
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if (signo == SIGINT) {
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is_running = 1;
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}
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}
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//! [Interesting]
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int
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2017-08-30 15:00:29 -07:00
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main(int argc, char** argv)
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2014-08-26 20:30:41 +00:00
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{
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2015-01-19 12:12:43 -08:00
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// Attach gas sensor to A0
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2017-08-30 15:00:29 -07:00
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upm::MQ3 sensor(0);
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2014-08-26 20:30:41 +00:00
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signal(SIGINT, sig_handler);
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thresholdContext ctx;
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ctx.averageReading = 0;
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ctx.runningAverage = 0;
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2017-08-30 15:00:29 -07:00
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ctx.averagedOver = 2;
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2014-08-26 20:30:41 +00:00
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2015-01-19 12:12:43 -08:00
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// Infinite loop, ends when script is cancelled
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// Repeatedly, take a sample every 2 milliseconds;
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// find the average of 128 samples; and
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// print a running graph of the averages using a resolution of 5
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2014-08-26 20:30:41 +00:00
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while (!is_running) {
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2017-08-30 15:00:29 -07:00
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int len = sensor.getSampledWindow(2, 128, buffer);
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2014-08-26 20:30:41 +00:00
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if (len) {
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2017-08-30 15:00:29 -07:00
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int thresh = sensor.findThreshold(&ctx, 30, buffer, len);
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sensor.printGraph(&ctx, 5);
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2014-08-26 20:30:41 +00:00
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if (thresh) {
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// do something ....
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}
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}
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}
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std::cout << "exiting application" << std::endl;
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return 0;
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}
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//! [Interesting]
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