/**
* Reads the current temperature in degrees Fahrenheit
*/
float SHT1x::readTemperatureF()
{
int _val; // Raw value returned from sensor
float _temperature; // Temperature derived from raw value
// Conversion coefficients from SHT15 datasheet
const float D1 = -40.0; // for 14 Bit @ 5V
const float D2 = 0.018; // for 14 Bit DEGF
// Fetch raw value
_val = readTemperatureRaw();
// Convert raw value to degrees Fahrenheit
_temperature = (_val * D2) + D1;
return (_temperature);
}
/**
* Reads the current temperature in degrees Celsius
*/
float SHT1x::readTemperatureC()
{
int _val; // Raw value returned from sensor
float _temperature; // Temperature derived from raw value
// Conversion coefficients from SHT15 datasheet
const float Dat1 = -40.0; // for 14 Bit @ 5V
const float Dat2 = 0.01; // for 14 Bit DEGC
// Fetch raw value
_val = readTemperatureRaw();
// Convert raw value to degrees Celsius
_temperature = (_val * Dat2) + Dat1;
return (_temperature);
}
void wuclass_temperature_humidity_sensor_update(wuobject_t *wuobject) {
sbi(TCCR0B, CS01);
sbi(TCCR0B, CS00);
sbi(TIMSK0, TOIE0);
SHT1x(5,6);
int temperature, temperatureRaw, humidityRaw, humidity;
temperatureRaw=readTemperatureRaw();
temperatureRaw=temperatureRaw-4000;
temperature=temperatureRaw/100;
humidityRaw=readHumidity();
humidity=(temperature*(100000+800*humidityRaw) + (405000+28*humidityRaw)*humidityRaw - 4*10000000)/10000000 - 11;
DEBUG_LOG(DBG_WKPFUPDATE, "WKPFUPDATE(TemperatureHumiditySensor): Sensed temperature value: %d.%dC\n", temperature, temperatureRaw%100);
DEBUG_LOG(DBG_WKPFUPDATE, "WKPFUPDATE(TemperatureHumiditySensor): Sensed humidity value: %d %% \n", humidity);
wkpf_internal_write_property_int16(wuobject, WKPF_PROPERTY_TEMPERATURE_HUMIDITY_SENSOR_CURRENT_VALUE_TEMPERATURE, temperature);
wkpf_internal_write_property_int16(wuobject, WKPF_PROPERTY_TEMPERATURE_HUMIDITY_SENSOR_CURRENT_VALUE_HUMIDITY, humidity);
}
// reads temperature in degrees F
float LPS::readTemperatureF(void)
{
return 108.5 + (float)readTemperatureRaw() / 480 * 1.8;
}
// reads temperature in degrees C
float LPS::readTemperatureC(void)
{
return 42.5 + (float)readTemperatureRaw() / 480;
}
