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temperature.cpp
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temperature.cpp
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#include "temperature.h"
#include <OneWire.h>
//OneWire wp(13);
Temperature::Temperature(int thermo_pin){
thermoPin = thermo_pin;
thermoAddrSet = false;
sumpThermoPin = 0;
sumpThermoAddrSet = false;
heaterPin = 0;
fanPin = 0;
maxTemp = 28;
minTemp = 22;
boundSet = false;
for(int i = 0; i < 8; i++){
thermoAddr[i] = 0;
sumpThermoAddr[i] = 0;
}
pinMode(thermoPin, INPUT);
}
void Temperature::setThermoPin(int pin, byte* addr){
thermoPin = pin;
pinMode(thermoPin, INPUT);
if(addr != NULL){
for(int i = 0; i < 8; i++){
thermoAddr[i] = addr[i];
}
thermoAddrSet = true;
}
}
void Temperature::setSumpThermoPin(int pin, byte* addr){
sumpThermoPin = pin;
pinMode(sumpThermoPin, INPUT);
if(addr != NULL){
for(int i = 0; i < 8; i++){
sumpThermoAddr[i] = addr[i];
}
sumpThermoAddrSet = false;
}
}
void Temperature::setHeaterPin(int pin, float startTemperature){
heaterPin = pin;
heatTemp = startTemperature;
if(boundSet == false){
minTemp = startTemperature;
}
pinMode(heaterPin, OUTPUT);
}
void Temperature::setFanPin(int pin, float startTemperature){
fanPin = pin;
fanTemp = startTemperature;
if(boundSet == false){
maxTemp = startTemperature;
}
pinMode(fanPin, OUTPUT);
}
void Temperature::setAlarmBound(float minTemperature, float maxTemperature){
minTemp = minTemperature;
maxTemp = maxTemperature;
boundSet = true;
}
float Temperature::getOWTemp(int pin, byte* address){
byte addr[8];
byte data[12];
byte type_s;
OneWire wp(pin);
/*
do{
wp.search(addr);
while(
*/
if ( !wp.search(addr)) {
Serial.println("No more addresses for Temperature probe");
Serial.println();
wp.reset_search();
delay(250);
return 0;
}
if (OneWire::crc8(addr, 7) != addr[7]) {
Serial.println("CRC is not valid for temperature probe!");
return 0;
}
switch (addr[0]) {
case 0x10:
Serial.println(" Chip = DS18S20"); // or old DS1820
type_s = 1;
break;
case 0x28:
Serial.println(" Chip = DS18B20");
type_s = 0;
break;
case 0x22:
Serial.println(" Chip = DS1822");
type_s = 0;
break;
default:
Serial.println("Device is not a DS18x20 family device.");
return 0;
}
wp.reset();
wp.select(addr);
wp.write(0x44, 1);
delay(1000);
wp.reset();
wp.select(addr);
wp.write(0xBE);
for (int i = 0; i < 9; i++) {
data[i] = wp.read();
}
int16_t raw = (data[1] << 8) | data[0];
if (type_s) {
raw = raw << 3; // 9 bit resolution default
if (data[7] == 0x10) {
// "count remain" gives full 12 bit resolution
raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
// at lower res, the low bits are undefined, so let's zero them
if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms
else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
//// default is 12 bit resolution, 750 ms conversion time
}
float celsius = (float)raw / 16.0;
return celsius;
}
float Temperature::getTemperature(){
return getOWTemp(thermoPin, thermoAddr);
}
float Temperature::getSumpTemperature(){
return getOWTemp(sumpThermoPin, sumpThermoAddr);
}
void Temperature::run(){
float temp = getTemperature();
if(temp < minTemp){
//alarm
}
if(temp > maxTemp){
//alarm
}
if(heaterPin != 0){
if(temp < heatTemp){
digitalWrite(heaterPin, HIGH);
}else{
digitalWrite(heaterPin, LOW);
}
}
if(fanPin != 0){
if(temp >= fanTemp){
digitalWrite(fanPin, HIGH);
}else{
digitalWrite(fanPin, LOW);
}
}
}