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Update DHT11.cpp

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Added the convertion of Celsius to Fahrenheit,
Added the convertion of Fahrenheit to Celsius.
Added Heat Index

Signed-off-by: J Sikes <31295952+TechRancher@users.noreply.github.com>
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J Sikes 2023-08-13 01:47:04 -05:00 committed by GitHub
parent 323e8c192b
commit 7ae032f826
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1 changed files with 38 additions and 0 deletions
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38
src/DHT11.cpp
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@ -84,6 +84,44 @@ byte DHT11::readByte()
return value;
}
// Converts Temperature to fahrenheit
float DHT11::convertToFahrenheit(float Temp)
{
float fT = (Temp * 1.8) + 32;
return fT;
}
// Converts Temperature to Celsius
float DHT11::convertToCelsius(float FTemp)
{
float cT = (FTemp - 32) * 5/9;
return cT;
}
// Computes Heat Index
float DHT11::computeHeatIndex(float Temp, float rH, bool isFahrenheit)
{
if(!isFahrenheit){
float T = convertToFahrenheit(Temp);
}
float T = Temp;
float RH = rH;
float Hi;
Hi = 0.5*(T+61.0+((T-68.0)*1.2)+(RH*0.094));
if(Hi > 79){
Hi = -42.379+2.04901523*T+10.14333127*RH-.22475541*T*RH-.00683783
*pow(T, 2)-.05481717*pow(RH, 2)+.00122874*pow(T, 2)*RH+.00085282*T
*pow(RH,2)-.00000199*pow(T, 2)*pow(RH,2);
}
if((RH <= 13.) && (T >= 80.) && (T <= 112.)){
Hi -= ((13-RH)/4)*sqrt(17-abs(T-95)/17);
} else if((RH >= 85.) && (T >= 80.) && (T <= 87.)){
Hi += ((RH-85)/10)*((87-T)/5);
}
return isFahrenheit ? Hi : convertToCelsius(Hi);
}
// Sends the start signal to the sensor.
void DHT11::startSignal()
{