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Added unit tests! to validate library calculations

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miguel5612
2022-03-21 14:32:37 -05:00
parent 6a035cc5d0
commit e3f5e2ec0c
5 changed files with 301 additions and 8 deletions
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26
src/MQUnifiedsensor.cpp
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@ -133,7 +133,7 @@ float MQUnifiedsensor::validateEcuation(float ratioInput)
//Serial.println("Result: "); Serial.println(_PPM);
return _PPM;
}
float MQUnifiedsensor::readSensor(bool isMQ303A, float correctionFactor)
float MQUnifiedsensor::readSensor(bool isMQ303A, float correctionFactor, bool injected)
{
//More explained in: https://jayconsystems.com/blog/understanding-a-gas-sensor
if(isMQ303A) {
@ -141,7 +141,7 @@ float MQUnifiedsensor::readSensor(bool isMQ303A, float correctionFactor)
}
_RS_Calc = ((_VOLT_RESOLUTION*_RL)/_sensor_volt)-_RL; //Get value of RS in a gas
if(_RS_Calc < 0) _RS_Calc = 0; //No negative values accepted.
_ratio = _RS_Calc / this->_R0; // Get ratio RS_gas/RS_air
if(!injected) _ratio = _RS_Calc / this->_R0; // Get ratio RS_gas/RS_air
_ratio += correctionFactor;
if(_ratio <= 0) _ratio = 0; //No negative values accepted or upper datasheet recomendation.
if(_regressionMethod == 1) _PPM= _a*pow(_ratio, _b); // <- Source excel analisis https://github.com/miguel5612/MQSensorsLib_Docs/tree/master/Internal_design_documents
@ -194,7 +194,7 @@ float MQUnifiedsensor::calibrate(float ratioInCleanAir) {
if(R0 < 0) R0 = 0; //No negative values accepted.
return R0;
}
float MQUnifiedsensor::getVoltage(int read) {
float MQUnifiedsensor::getVoltage(bool read, bool injected, int value) {
float voltage;
if(read)
{
@ -206,12 +206,30 @@ float MQUnifiedsensor::getVoltage(int read) {
}
voltage = (avg/ retries) * _VOLT_RESOLUTION / ((pow(2, _ADC_Bit_Resolution)) - 1);
}
else
else if(!injected)
{
voltage = _sensor_volt;
}
else
{
voltage = (value) * _VOLT_RESOLUTION / ((pow(2, _ADC_Bit_Resolution)) - 1);
_sensor_volt = voltage; //to work on testing
}
return voltage;
}
float MQUnifiedsensor:: setRsR0RatioGetPPM(float value)
{
_ratio = value;
return readSensor(false, 0, true);
}
float MQUnifiedsensor::getRS()
{
//More explained in: https://jayconsystems.com/blog/understanding-a-gas-sensor
_RS_Calc = ((_VOLT_RESOLUTION*_RL)/_sensor_volt)-_RL; //Get value of RS in a gas
if(_RS_Calc < 0) _RS_Calc = 0; //No negative values accepted.
return _RS_Calc;
}
float MQUnifiedsensor::stringTofloat(String & str)
{
return atof( str.c_str() );

11
src/MQUnifiedsensor.h
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@ -31,7 +31,7 @@ class MQUnifiedsensor
//user functions
float calibrate(float ratioInCleanAir);
float readSensor(bool isMQ303A = false, float correctionFactor = 0.0);
float readSensor(bool isMQ303A = false, float correctionFactor = 0.0, bool injected=false);
float readSensorR0Rs();
float validateEcuation(float ratioInput = 0);
@ -42,9 +42,12 @@ class MQUnifiedsensor
float getRL();
float getVoltResolution();
String getRegressionMethod();
float getVoltage(int read = true);
float stringTofloat(String & str);
float getVoltage(bool read = true, bool injected = false, int value = 0);
float stringTofloat(String & str);
// functions for testing
float getRS();
float setRsR0RatioGetPPM(float value);
private:
/************************Private vars************************************/