1/*
2 * Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
3 * Copyright (c) 2015 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
25public class TP401Sample {
26	static {
27		try {
28			System.loadLibrary("javaupm_gas");
29		} catch (UnsatisfiedLinkError e) {
30			System.err.println("error in loading native library");
31			System.exit(-1);
32		}
33	}
34
35	private static String airQuality(int value) {
36		if (value < 50)
37			return "Fresh Air";
38		if (value < 200)
39			return "Normal Indoor Air";
40		if (value < 400)
41			return "Low Pollution";
42		if (value < 600)
43			return "High Pollution - Action Recommended";
44		return "Very High Pollution - Take Action Immediately";
45	}
46
47	public static void main(String[] args) throws InterruptedException {
48		// ! [Interesting]
49		// Instantiate new grove air quality sensor on analog pin A0
50		upm_gas.TP401 airSensor = new upm_gas.TP401(0);
51
52		System.out.println(airSensor.name());
53
54		System.out.println("Heating sensor for 3 minutes...");
55		// wait 3 minutes for sensor to warm up
56		for (int i = 0; i < 3; i++) {
57			if (i != 0)
58				System.out.println("Please wait, " + i + " minute(s) passed..");
59			Thread.sleep(60000);
60		}
61		System.out.println("Sensor ready!");
62
63		while (true) {
64			int value = airSensor.getSample(); // Read raw value
65			float ppm = airSensor.getPPM(); // Read CO ppm (can vary slightly
66											// from previous read)
67
68			System.out.println("raw: " + value + " ppm: " + ppm + "  " + airQuality(value));
69
70			Thread.sleep(100);
71		}
72		// ! [Interesting]
73	}
74
75}