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/*
* Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <iostream>
#include "tp401.h"
using namespace std;
//! [Interesting]
// Give a qualitative meaning to the value from the sensor
std::string
airQuality(uint16_t value)
{
if(value < 50) return "Fresh Air";
if(value < 200) return "Normal Indoor Air";
if(value < 400) return "Low Pollution";
if(value < 600) return "High Pollution - Action Recommended";
return "Very High Pollution - Take Action Immediately";
}
int main ()
{
upm::TP401* airSensor = new upm::TP401(0); // Instantiate new grove air quality sensor on analog pin A0
cout << airSensor->name() << endl;
fprintf(stdout, "Heating sensor for 3 minutes...\n");
// wait 3 minutes for sensor to warm up
for(int i = 0; i < 3; i++) {
if(i) {
fprintf(stdout, "Please wait, %d minute(s) passed..\n", i);
}
sleep(60);
}
fprintf(stdout, "Sensor ready!\n");
while(true) {
uint16_t value = airSensor->getSample(); // Read raw value
float ppm = airSensor->getPPM(); // Read CO ppm (can vary slightly from previous read)
fprintf(stdout, "raw: %4d ppm: %5.2f %s\n", value, ppm, airQuality(value).c_str());
usleep(2500000); // Sleep for 2.5s
}
delete airSensor;
return 0;
}
//! [Interesting]
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