cleans up code and adds comments

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

@@ -28,7 +28,8 @@ Adafruit_SGP30 sgp;
 WebSocketsClient webSocket;
 
 // define variables
-uint16_t TVOC_base, eCO2_base;
+uint16_t TVOC_base;
+uint16_t eCO2_base;
 uint16_t counter = 0;
 float temperature = 0;
 float humidity = 0;
@@ -36,8 +37,9 @@ uint16_t eCO2 = 0;
 uint16_t TVOC = 0;
 bool noise = false;
 bool update = false;
-double counterBaseline = 15000;
-int counterInterval = 5000;
+unsigned long currentCounter;
+unsigned long lastCounter;
+uint16_t interval = 5000
 
 // hexdump function for websockets binary handler
 void hexdump(const void *mem, uint32_t len, uint8_t cols = 16) {
@@ -87,6 +89,7 @@ void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
 	}
 }
 
+// special function to setup websocket
 void websocketSetup(){
 	WiFiMulti.addAP("iotroam", "vbK9gbDBIB");
 
@@ -104,6 +107,7 @@ void websocketSetup(){
 	webSocket.setReconnectInterval(500);
 }
 
+// fucntion to reset the values if needed
 void resetValues() {
   TVOC_base;
   eCO2_base;
@@ -116,6 +120,45 @@ void resetValues() {
   lastCounter = 0;
 }
 
+// function to check for errors in sensors
+bool checkForError(){
+  if (!sgp.IAQmeasure()) {
+    Serial.println("SGP30: BAD");
+    errorSGP30 = true;
+  } else {
+    Serial.println("SGP30: OK");
+    errorSGP30 = false;
+  }
+
+  if (isnan(temperature || isnan(humidity)){
+    Serial.println("DHT11: BAD")
+  } else {
+    Serial.println("DHT11: OK");
+    errorDHT11 = false;
+  }
+}
+
+// function to update when interval is met (see intervalCounter variable)
+void update(){
+  webSocket.sendTXT("Temp: " + String(temperature));
+  webSocket.sendTXT("Humi: " + String(humidity));
+  webSocket.sendTXT("eCO2: " + String(sgp.eCO2));
+  webSocket.sendTXT("TVOC: " + String(sgp.TVOC));
+  
+  sgp.getIAQBaseline(&eCO2_base, &TVOC_base);
+
+  // if sensor doesnt work print in serialmonitor
+
+
+  // read dht11 sensor
+  temperature = float(dht.readTemperature());
+  humidity = float(dht.readHumidity());
+
+  // display sensordata on oled screen
+  displayData();
+}
+
+// function to display data on oled screen
 void displayData() {
   // clear display for new info
   display.clearDisplay();
@@ -134,6 +177,7 @@ void displayData() {
   display.display();
 }
 
+// setup function
 void setup() {
   Serial.begin(115200);
 
@@ -152,6 +196,7 @@ void setup() {
   resetValues();
 }
 
+// loop function
 void loop() {
   webSocket.loop();
 
@@ -179,7 +224,7 @@ void loop() {
   // display sensordata on oled screen
   displayData();
   
-  if (currentCounter - lastCounter >= 5000){
+  if (currentCounter - lastCounter >= interval){
     lastcounter = millis()
     update();
   }