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41 lines
1.2 KiB
Java
41 lines
1.2 KiB
Java
/*
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* Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
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* Copyright (c) 2015 Intel Corporation.
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*
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* This program and the accompanying materials are made available under the
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* terms of the The MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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*/
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public class MQ303A_Example {
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public static void main(String[] args) throws InterruptedException {
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// Instantiate an mq303a sensor on analog pin A0
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// This device uses a heater powered from an analog I/O pin.
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// If using A0 as the data pin, then you need to use A1, as the heater
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// pin (if using a grove mq303a). For A1, we can use the D15 gpio,
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// setup as an output, and drive it low to power the heater.
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upm_mq303a.MQ303A mq303a = new upm_mq303a.MQ303A(1, 15);
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System.out.println("Enabling heater and waiting 2 minutes for warmup.");
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mq303a.heaterEnable(true);
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Thread.sleep(120000);
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System.out.println("This sensor may need to warm until the value drops below about 450.");
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for (int i = 1; i < 10; i++) {
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int val = mq303a.value();
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System.out.println("Alcohol detected (higher means stronger alcohol): " + val);
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Thread.sleep(1000);
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}
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mq303a.heaterEnable(false);
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System.out.println("Exiting");
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}
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}
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