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ESPtermostat.ino

@@ -22,11 +22,12 @@ DallasTemperature sensor(&oneWire);
 
 //========== Init variables ==========
 
-float temperature;
+float avgTemperature;
 String metrics;
 bool heating;
 float reqTemp = 21.5;
 float offset = 0.25;
+float correction[3] = {CORRECTION1, CORRECTION2, CORRECTION3};
 
 //=================================
 
@@ -128,7 +129,7 @@ void setup() {
         String repply;
     
         if(request->hasParam("temp")) {
-          repply = String(temperature);
+          repply = String(avgTemperature);
         }else if(request->hasParam("relay")){
           repply = String(heating);
         }else if(THERMOSTAT && request->hasParam("reqtemp")){
@@ -165,27 +166,45 @@ void notFound(AsyncWebServerRequest *request) {
 }
 
 void thermostatCheck(){
-  if(temperature <= (reqTemp - offset)){
+  if(avgTemperature <= (reqTemp - offset)){
     heating = 1;
     digitalWrite(RELAY_PIN, !heating);
-  }else if(temperature >= (reqTemp + offset)){
+  }else if(avgTemperature >= (reqTemp + offset)){
     heating = 0;
     digitalWrite(RELAY_PIN, !heating);
   }
 }
 
 void readSensor() {
-  float tempC = sensor.getTempCByIndex(0);
+  uint8_t ds18Count = sensor.getDS18Count();
+  float tempC[ds18Count];
+  float temperature[ds18Count];
+  float avgTemperature;
+  int savedTemperatures = 0;
+  
+  for(int i=0; i<ds18Count; i++) {
+    tempC[i] = sensor.getTempCByIndex(i);
+    if(tempC[i] != DEVICE_DISCONNECTED_C){
+      temperature[i] = tempC[i] + correction[i];
+      avgTemperature += temperature[i];
+      savedTemperatures++;
+    }
+  }
 
-  if(tempC != DEVICE_DISCONNECTED_C){
+  avgTemperature = avgTemperature / savedTemperatures;
-    // read the actual temperature after it's been converted
+  
-    temperature = tempC + CORRECTION;
+  for(int i=0; i<ds18Count; i++) {
-    // do what you need with the temperature here
+    metrics += "\ntemp{device=\"";
+    metrics += i;
+    metrics += "\"} ";
+    metrics += temperature[i];
+  }
+  for(int i=0; i<ds18Count; i++) {
+    metrics += "\nraw_temp{device=\"";
+    metrics += i;
+    metrics += "\"} ";
+    metrics += tempC[i];
   }
-  metrics = "temp ";
-  metrics += temperature;
-  metrics += "\nraw_temp ";
-  metrics += tempC;
   if(THERMOSTAT){
     metrics += "\nheating ";
     metrics += heating;