fixes interval and stuff

arduino/node-code/node-code-final.ino

@@ -128,26 +128,26 @@ bool checkForError(){
   if (!sgp.IAQmeasure()) {
     Serial.println("SGP30: BAD");
     errorSGP30 = true;
-    return true;
   } else {
     Serial.println("SGP30: OK");
     errorSGP30 = false;
-    return false;
   }
 
   if (isnan(temperature) || isnan(humidity)){
     Serial.println("DHT11: BAD");
     errorDHT11 = true;
-    return true;
   } else {
     Serial.println("DHT11: OK");
     errorDHT11 = false;
-    return false;
   }
+
+  return false;
 }
 
 // function to update when interval is met (see intervalCounter variable)
 void update(){
+  // display sensordata on oled screen
+  displayData();
   webSocket.sendTXT("Temp: " + String(temperature));
   webSocket.sendTXT("Humi: " + String(humidity));
   webSocket.sendTXT("eCO2: " + String(sgp.eCO2));
@@ -158,6 +158,8 @@ void update(){
   // read dht11 sensor
   temperature = float(dht.readTemperature());
   humidity = float(dht.readHumidity());
+
+  checkForError();
 }
 
 // function to display data on oled screen
@@ -200,15 +202,9 @@ void setup() {
 
 // loop function
 void loop() {
-  // check for errors
-  checkForError();
-
   // loop the websocket connection so it stays alive
   webSocket.loop();
 
-  // display sensordata on oled screen
-  displayData();
-
   // update when interval is met
   if (currentMillis - lastMillis >= interval){
     lastMillis = millis();