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Fixed overflow

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miguel5612 2020-03-26 11:17:46 -05:00
parent abac48da38
commit 1b351f9495
2 changed files with 15 additions and 7 deletions
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19
examples/MQ-3/MQ-3.ino
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@ -38,17 +38,22 @@ void setup() {
Remarks: This function create the sensor object.
************************************************************************************/
MQ3.setRegressionMethod("Exponential");
MQ3.setA(4.8387); MQ3.setB(-2.68); // Configurate the ecuation values
/*
//Si el valor de RL es diferente a 10K por favor asigna tu valor de RL con el siguiente metodo:
MQ3.setRL(10);
*/
MQ3.init();
MQ3.serialDebug(true);
//pinMode(calibration_button, INPUT);
}
void loop() {
MQ3.update(); // Update data, the arduino will be read the voltaje in the analog pin
/*
//Si el valor de RL es diferente a 10K por favor asigna tu valor de RL con el siguiente metodo:
MQ3.setRL(10);
*/
MQ3.update(); // Update data, the arduino will be read the voltage on the analog pin
MQ3.readSensor(); // Sensor will read PPM concentration using the a and b values setted before or on setup
MQ3.serialDebug(); // Will print the table on the serial port
/*
//Rutina de calibracion - Uncomment if you need (setup too and header)
if(calibration_button)
@ -57,6 +62,7 @@ void loop() {
MQ3.setR0(R0);
}
*/
/***************************** MQReadSensor ****************************************
Input: Gas - Serial print flag
Output: Value in PPM
@ -66,6 +72,7 @@ void loop() {
//Lecture will be saved in lecture variable
//float lecture = MQ3.readSensor("", true); // Return Alcohol concentration
// Options, uncomment where you need
/*
MQ3.setA(2*10^31); MQ3.setB(19.01); // Configurate the ecuation values
CH4 = MQ3.readSensor(); // Return CH4 concentration
@ -83,6 +90,7 @@ void loop() {
MQ3.setA(4.8387); MQ3.setB(-2.68); // Configurate the ecuation values
Benzine = MQ3.readSensor(); // Return Benzene concentration
*/
/*
Serial.println("***************************");
@ -97,5 +105,4 @@ void loop() {
Serial.print("Benzine: ");Serial.print(Benzine,2);Serial.println(" mg/L");
Serial.println("***************************");
*/
MQ3.serialDebug();
}

3
src/MQUnifiedsensor.cpp
View File

@ -41,6 +41,7 @@ void MQUnifiedsensor::serialDebug(bool onSetup)
{
if(onSetup)
{
Serial.println();
Serial.println("************************************************************************************************************************************************");
Serial.println("MQ sensor reading library for arduino");
@ -93,7 +94,7 @@ float MQUnifiedsensor::readSensor()
if(_regressionMethod == "Exponential") _PPM= _a*pow(_ratio, _b);
if(_regressionMethod == "Linear") _PPM= _a*_ratio + _b;
if(_PPM < 0) _PPM = 0; //No negative values accepted or upper datasheet recomendation.
if(_PPM > 10000) _PPM = 9999; //No negative values accepted or upper datasheet recomendation.
//if(_PPM > 10000) _PPM = 99999999; //No negative values accepted or upper datasheet recomendation.
return _PPM;
}
float MQUnifiedsensor::calibrate() {