1/*
2 * Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26#include <unistd.h>
27#include <iostream>
28#include "tp401.h"
29
30using namespace std;
31
32//! [Interesting]
33// Give a qualitative meaning to the value from the sensor
34std::string
35airQuality(uint16_t value)
36{
37    if(value < 50) return "Fresh Air";
38    if(value < 200) return "Normal Indoor Air";
39    if(value < 400) return "Low Pollution";
40    if(value < 600) return "High Pollution - Action Recommended";
41    return "Very High Pollution - Take Action Immediately";
42}
43
44int main ()
45{
46    upm::TP401* airSensor = new upm::TP401(0); // Instantiate new grove air quality sensor on analog pin A0
47
48    cout << airSensor->name() << endl;
49
50    fprintf(stdout, "Heating sensor for 3 minutes...\n");
51    // wait 3 minutes for sensor to warm up
52    for(int i = 0; i < 3; i++) {
53        if(i) {
54            fprintf(stdout, "Please wait, %d minute(s) passed..\n", i);
55        }
56        sleep(60);
57    }
58    fprintf(stdout, "Sensor ready!\n");
59
60    while(true) {
61        uint16_t value = airSensor->getSample(); // Read raw value
62        float ppm = airSensor->getPPM();    // Read CO ppm (can vary slightly from previous read)
63        fprintf(stdout, "raw: %4d ppm: %5.2f   %s\n", value, ppm, airQuality(value).c_str());
64        usleep(2500000);    // Sleep for 2.5s
65    }
66
67    delete airSensor;
68    return 0;
69}
70//! [Interesting]
71