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61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/*
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MQUnifiedsensor Library - reading an MQ2
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Demonstrates the use a MQ2 sensor.
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Library originally added 01 may 2019
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by Miguel A Califa, Yersson Carrillo, Ghiordy Contreras, Mario Rodriguez
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Added example
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modified 23 May 2019
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by Miguel Califa
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This example code is in the public domain.
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*/
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//Include the library
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#include <MQUnifiedsensor.h>
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//Definitions
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#define pin A0 //Analog input 0 of your arduino
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#define type 2 //MQ2
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/***************************** MQInicializar****************************************
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Input: pin, type
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Output:
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Remarks: This function create the sensor object.
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************************************************************************************/
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//Declare Sensor
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MQUnifiedsensor MQ2(pin, type);
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void setup() {
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//Init serial port
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Serial.begin(115200);
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/***************************** MQInicializar****************************************
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Input:
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Output:
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Remarks: This function configure the pinMode
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************************************************************************************/
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//init the sensor
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MQ2.inicializar();
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}
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void loop() {
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/***************************** MQReadSensor ****************************************
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Input: Gas - Serial print flag
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Output: Value in PPM
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Remarks: This function use readPPM to read the value in PPM the gas in the air.
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************************************************************************************/
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//Read the sensor and print in serial port
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//Lecture will be saved in lecture variable
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int lecture = MQ2.readSensor("", true); // Return LPG concentration
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// Options, uncomment where you need
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//int lecture = MQ2.readSensor("H2", true); // Return H2 concentration
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//int lecture = MQ2.readSensor("LPG", true); // Return LPG concentration
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//int lecture = MQ2.readSensor("CO", true); // Return CO concentration
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//int lecture = MQ2.readSensor("Alcohol", true); // Return Alcohol concentration
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//int lecture = MQ2.readSensor("Propane", true); // Return Propane concentration
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//int lecture = MQ2.readSensor("Benzene", true); // Return Benzene concentration
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delay(400);
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}
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