//boolean S == Scale. True == Fahrenheit; False == Celcius
float DHT::readTemperature(bool S, bool force) {
float f = NAN;
if (read(force)) {
switch (_type) {
case DHT11:
f = data[2];
if(S) {
f = convertCtoF(f);
}
break;
case DHT22:
case DHT21:
f = data[2] & 0x7F;
f *= 256;
f += data[3];
f *= 0.1;
if (data[2] & 0x80) {
f *= -1;
}
if(S) {
f = convertCtoF(f);
}
break;
}
}
return f;
}
//boolean S == Scale. True == Farenheit; False == Celcius
float DHT::readTemperature(bool S)
{
float f;
if (read())
{
switch (_type)
{
case DHT11:
f = data[2];
if(S)
f = convertCtoF(f);
return f;
case DHT22:
case DHT21:
f = data[2] & 0x7F;
f *= 256;
f += data[3];
f /= 10;
if (data[2] & 0x80)
f *= -1;
if(S)
f = convertCtoF(f);
return f;
}
}
// Serial.print("Read fail");
return NAN;
}
//boolean S == Scale. True == Farenheit; False == Celcius
float DHT::readTemperature(bool S) {
float f;
if (read()) {
switch (_type) {
case DHT11:
f = data[2];
if (S)
f = convertCtoF(f);
temperature = f;
return f;
case DHT22:
case DHT21:
f = data[2] & 0x7F;
f *= 256;
f += data[3];
f /= 10;
if (data[2] & 0x80)
f *= -1;
if (S)
f = convertCtoF(f);
temperature = f;
return f;
}
}
return 0.0;
}
//boolean S == Scale. True == Farenheit; False == Celcius
float DHT::readTemperature(bool S) {
float _f;
if (read()) {
switch (_type) {
case DHT11:
_f = data[2];
if(S)
_f = convertCtoF(_f);
return _f;
case DHT22:
case DHT21:
_f = data[2] & 0x7F;
_f *= 256;
_f += data[3];
_f /= 10;
if (data[2] & 0x80)
_f *= -1;
if(S)
_f = convertCtoF(_f);
return _f;
}
}
return NAN;
}
//boolean isFahrenheit: True == Fahrenheit; False == Celcius
float DHT::computeHeatIndex(float temperature, float percentHumidity, bool isFahrenheit) {
// Using both Rothfusz and Steadman's equations
// http://www.wpc.ncep.noaa.gov/html/heatindex_equation.shtml
float hi;
if (!isFahrenheit)
temperature = convertCtoF(temperature);
hi = 0.5 * (temperature + 61.0 + ((temperature - 68.0) * 1.2) + (percentHumidity * 0.094));
if (hi > 79) {
hi = -42.379 +
2.04901523 * temperature +
10.14333127 * percentHumidity +
-0.22475541 * temperature*percentHumidity +
-0.00683783 * pow(temperature, 2) +
-0.05481717 * pow(percentHumidity, 2) +
0.00122874 * pow(temperature, 2) * percentHumidity +
0.00085282 * temperature*pow(percentHumidity, 2) +
-0.00000199 * pow(temperature, 2) * pow(percentHumidity, 2);
if((percentHumidity < 13) && (temperature >= 80.0) && (temperature <= 112.0))
hi -= ((13.0 - percentHumidity) * 0.25) * sqrt((17.0 - abs(temperature - 95.0)) * 0.05882);
else if((percentHumidity > 85.0) && (temperature >= 80.0) && (temperature <= 87.0))
hi += ((percentHumidity - 85.0) * 0.1) * ((87.0 - temperature) * 0.2);
}
return isFahrenheit ? hi : convertFtoC(hi);
}
float DHT::computeHeatIndex(float temperature, float percentHumidity, bool isFahrenheit)
{
float heatIndex;
if (!isFahrenheit)
temperature = convertCtoF(temperature);
heatIndex = 0.5 * (temperature + 61.0 + ((temperature - 68.0) * 1.2) + (percentHumidity * 0.094));
if (heatIndex > 79)
{
heatIndex = -42.379 +
2.04901523 * temperature +
10.14333127 * percentHumidity +
-0.22475541 * temperature*percentHumidity +
-0.00683783 * pow(temperature, 2) +
-0.05481717 * pow(percentHumidity, 2) +
0.00122874 * pow(temperature, 2) * percentHumidity +
0.00085282 * temperature*pow(percentHumidity, 2) +
-0.00000199 * pow(temperature, 2) * pow(percentHumidity, 2);
if((percentHumidity < 13) && (temperature >= 80.0) && (temperature <= 112.0))
heatIndex -= ((13.0 - percentHumidity) * 0.25) * sqrt((17.0 - abs(temperature - 95.0)) * 0.05882);
else if((percentHumidity > 85.0) && (temperature >= 80.0) && (temperature <= 87.0))
heatIndex += ((percentHumidity - 85.0) * 0.1) * ((87.0 - temperature) * 0.2);
}
//boolean isFahrenheit: True == Fahrenheit; False == Celcius
return isFahrenheit ? heatIndex : convertFtoC(heatIndex);
}
float DHT::readTemperature(bool bFarenheit/* = false*/)
{
read();
if (NAN != m_lastTemp && bFarenheit)
return convertCtoF(m_lastTemp);
else
return m_lastTemp;
}
//This function gets the two bytes of temperature data from the STTS751 Sensor and convert float temp value
//This function was leveraged from blog post http://mike.saunby.net/2013_03_01_archive.html
float WSNode::getSTTS751Temp()
{
byte lo;
signed char hi;
//Because the Address pin is tied to ground the STTS751 address is 0x3B
Wire.begin(); // initialise the connection
hi = i2c_sensor_read_byte(0x3B, 0);
lo = i2c_sensor_read_byte(0x3B, 2);
Wire.end(); //turn wire off until next reading
if(tempSetF) {
if( hi > 0) return convertCtoF(hi + lo * 1.0/256.0);
else return convertCtoF(hi - lo * 1.0/256.0);
}
else {
if( hi > 0) return (hi + lo * 1.0/256.0);
else return (hi - lo * 1.0/256.0);
}
}
float ALB_DHT11::readTemperatureF()
{
float f = NAN;
if (read())
{
f = data[2];
f = convertCtoF(f);
}
return f;
}
float DHT::readTemperature(bool S, bool force)
{
float f = NAN;
if (read(force))
{
f = data[2] & 0x7F;
f *= 256;
f += data[3];
f *= 0.1;
if (data[2] & 0x80)
{
f *= -1;
}
if(S)
{
f = convertCtoF(f);
}
}
return f;
}
bool DHT::readTempAndHumidity(float* temp, float* humid, bool bFarenheit/* = false*/)
{
bool bSuccess = false;
if (read())
{
if(temp)
{
*temp = m_lastTemp;
if(bFarenheit)
{
*temp = convertCtoF(*temp);
}
}
if(humid)
{
*humid = m_lastHumid;
}
bSuccess = true;
}
return bSuccess;
}
// The real aquire function
Humiditysensor DHTHUMIDITY::readHumidity()
{
float u,t;
if (readSensor()) {
switch (sensor.Type) {
case DHT11:
u = data[0];
t = data[2];
break;
case DHT22:
case DHT21:
u = data[0];
u *= 256;
u += data[1];
u /= 10;
t = data[2] & 0x7F;
t *= 256;
t += data[3];
t /= 10;
if (data[2] & 0x80) t *= -1;
break;
default:
u = 0;
t = 0;
break;
}
} else {
Serial.print("Read fail");
u = -1;
t = -1;
}
sensor.TemperatureC = t;
sensor.TemperatureF = convertCtoF(t);
sensor.Humidity = u;
return(sensor);
}
int main()
{
int choixMenu, h, m, s; //ENTIERS
float tempC, tempF, distKM, distMI, volumeL, volumeG; //REELS
do //DEBUT DE LA BOUCLE REPETER
{
AfficherMenu();
printf("\nVotre choix ? ");
scanf("%d", &choixMenu);
printf("\n");
//STRUCTURE CONDITIONNELLE
switch (choixMenu)
{
case 1: // SI CHOIXMENU EST EGAL A 1 ALORS
printf("Saisir heure(s)\n");
scanf("%d", &h);
printf("Saisir minute(s)\n");
scanf("%d", &m);
printf("Saisir seconde(s)\n");
scanf("%d", &s);
printf("%d h, %d min, %d sec = %d secondes", h, m, s, convertHMStoS(h,m,s));
break; //ON SORT DU SWITCH
case 2:
printf("Saisir secondes\n");
scanf("%d", &s);
printf("%d secondes =", s);
//ON ENVOIE L'ADRESSE DE H M ET S
decoupeSecondes(&h, &m, &s);
printf(" %d heures et %d minutes et %d secondes", h, m, s);
break;
case 3:
printf("saisir la temperature en degre C\n");
scanf("%f", &tempC);
printf("%1.2f degre C = %1.2f degre F", tempC, convertCtoF(tempC));
break;
case 4:
printf("saisir la temperature en degre F\n");
scanf("%f",&tempF);
printf("%1.2f degre F = %1.2f degre C", tempF, convertFtoC(tempF));
break;
case 5:
printf("saisir une distance en km\n");
scanf("%f", &distKM);
printf("%1.2f km = %1.2f miles", distKM, convertKMtoMI(distKM));
break;
case 6:
printf("saisir une distance en milles\n");
scanf("%f", &distMI);
printf("%1.2f mi = %1.2f km",distMI, convertMItoKM(distMI));
break;
case 7:
printf("saisir un volume en litres\n");
scanf("%f", &volumeL);
printf("%1.2f L = %1.2f G", volumeL, convertLtoG(volumeL));
break;
case 8:
printf("saisir un volume en gallons\n");
scanf("%f", &volumeG);
printf("%1.2f G = %1.2f L", volumeG, convertGtoL(volumeG));
break;
case 9:
printf("Au revoir\n");
}
if (choixMenu < 1 || choixMenu > 9)
printf("Erreur de saisie");
} while (choixMenu != 9); //JUSQU'AU TEMPS QUE CHOIXMENU EGAL A 9
return 0;
}
float DHT::getHeatIndex() {
return convertFtoC(computeHeatIndex(convertCtoF(readTemperature()), readHumidity()));
}
float DHT::getTempFarenheit() {
return convertCtoF(readTemperature());
}
