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MyTempSens.cpp
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MyTempSens.cpp
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/**
* MyTempSens.cpp
* Klasse fuer den Zugriff auf den Temperatursensor LM35 & LM335
*
* @mc Arduino
* @autor Manuel Bracher
* @version 1.0
* @created 30.06.2016
* @updated
*
* Versionshistorie:
* V 1.1:
*/
#include "MyTempSens.h"
// #define DEBUG
/**
* Initialisierung mit dem Pin, an dem der Tempsensor hängt
*/
MyTempSens::MyTempSens(byte pin) {
_pin = pin;
pinMode(_pin, INPUT);
_tempSamplesSum = 0;
_idx = 0;
_slope = 100;
_offsetC = 0;
for (byte i = 0; i < NR_OF_SAMPLES; i++) {
_tempSamples[i] = 0;
}
}
void MyTempSens::initLM35() {
_slope = 100;
_offsetC = 0;
}
void MyTempSens::initLM335() {
_slope = 100;
_offsetC = -273;
}
byte MyTempSens::getTempC() {
unsigned long temp = (unsigned long)_tempSamplesSum * 5 * _slope / (1023 * NR_OF_SAMPLES) + _offsetC;
return temp;
}
void MyTempSens::takeSample() {
_tempSamplesSum -= _tempSamples[_idx];
_tempSamples[_idx] = analogRead(_pin);
_tempSamplesSum += _tempSamples[_idx];
_idx++;
if (_idx >= NR_OF_SAMPLES) {
_idx = 0;
}
}