Initial commit

Presence.ino

+#include <WiFiNINA.h>
+
+//Set up wifi global variables
+char ssid[] = "TP-Link_E9D7";
+char pass[] = "27309612";
+int status = WL_IDLE_STATUS;
+
+//Set up server global variables
+IPAddress server(192,168,0,65);
+int serverPort = 28800;
+
+//Set up delay global variables
+int pollDelay = 1000;
+int connectionDelay = 10000;
+
+//Set up the PIR status
+int lastStatus = 0;
+
+//Set up the Wifi client
+WiFiClient client;
+
+void setup() {
+  //Set up serial connection
+  Serial.begin(9600);
+  while (!Serial);
+
+  //Set up the input pin
+  pinMode(4, INPUT);
+  digitalWrite(4, LOW);
+  
+  //Set up the output pin
+  pinMode(8, OUTPUT);
+  digitalWrite(8, LOW);
+
+  //Set up the status LED
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, HIGH);
+
+  //Initial connection to Wifi and server
+  connectToWifi();
+  connectToServer();
+  
+}
+
+void loop() {
+
+  //Check for wifi connection, if absent, reconnect
+  if (status != WL_CONNECTED) {
+    Serial.println("Wifi connection lost");
+    connectToWifi();
+  }
+
+  //Check for server connection, if absent, reconnect
+  if (!client.connected()) {
+    Serial.println("Server connection lost");
+    connectToServer();
+  }
+
+  //Read any data being sent from the server and print it the the serial
+  if (client.available()) {
+    while (client.available()) {
+      char data = client.read();
+    if (data == 'a') {
+      digitalWrite(8, HIGH);
+      Serial.println("Lights On");
+    } else if (data == 'd') {
+      digitalWrite(8, LOW);
+      Serial.println("Lights Off");
+    } else {
+      Serial.write(data);
+    }
+    }
+  }
+
+  //Read the input pin for the PIR sensor, and send results to the server
+  if (digitalRead(4) == HIGH) {
+    //If previously no person was detected, send a 1 and set last status to 1
+    if (lastStatus == 0) {
+      client.println("1");
+      lastStatus = 1;
+    }
+  } else {
+    //If previously a person was detected, send a 0 and set last status to 0
+    if (lastStatus == 1) {
+      client.println("0");
+      lastStatus = 0;
+    }
+  }
+
+  //Set built in LED low while waiting
+  digitalWrite(LED_BUILTIN, LOW);
+
+  //Wait a little to not spam the server
+  delay(pollDelay);
+
+  //Set built in LED high while working
+  digitalWrite(LED_BUILTIN, HIGH);
+  
+}
+
+void connectToWifi() {
+  
+  while (status != WL_CONNECTED) {
+
+    Serial.print("Attempting to connect to network: ");
+
+    Serial.println(ssid);
+    status = WiFi.begin(ssid, pass);
+
+    delay(connectionDelay);
+
+  }
+
+    Serial.println("Connection Successful");
+
+    Serial.print("Connected with IP address: ");
+    Serial.println(WiFi.localIP());
+
+}
+
+void connectToServer() {
+  
+  while (!client.connected()) {
+
+    Serial.print("Attempting to connect to server: ");
+
+    Serial.print(server);
+    Serial.print(":");
+    Serial.println(serverPort);
+
+    client.stop();
+    client.connect(server, serverPort);
+
+    delay(connectionDelay);
+    
+  }
+
+  Serial.println("Connection Successful");
+  client.println("Hello!");
+  
+}