Added code for barduino

realG_.ino

@@ -0,0 +1,150 @@
+/*
+* MDEF Measuring the World
+* Team realG
+*
+* 18 Feb 2023
+* Added comments for documentation and removed sensitive information
+*
+* This is code for Barduino. It turns on the board, connects to a hard-coded wifi,
+* finds all available networks and sends the count of available networks and count of 
+* avaiable networks with no wifi password to the hard-coded MQTT broker
+*
+* The broker will receive this example message: 10, 3
+* It means there are 10 networks and 3 of them are open/no password.
+*
+* This code only sends a single message.
+*/
+#include <WiFi.h> // library for wifi
+#include <PubSubClient.h> // library for MQTT connection
+#include <Adafruit_NeoPixel.h> // library for built-in LED
+
+#define PIN 38
+
+// How many NeoPixels are attached to the Arduino?
+#define NUMPIXELS 1  // Popular NeoPixel ring size
+
+// When setting up the NeoPixel library, we tell it how many pixels,
+// and which pin to use to send signals. Note that for older NeoPixel
+// strips you might need to change the third parameter -- see the
+// strandtest example for more information on possible values.
+Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
+
+const char* ssid = ""; // put wifi name
+const char* password = ""; // put the wifi password
+WiFiClient wifiClient;
+
+const char* mqttBroker = ""; // put MQTT broker url
+const char* mqttClientName = "futurehacker"; // you can replace this with your own client name
+const char* mqttUser = ""; // MQTT User Authentification
+const char* mqttPass = ""; // MQTT Password Authentification
+const char* topic = "lab/mdef/realg"; // replace this with the topic you will use
+PubSubClient mqttClient(wifiClient);
+
+void mqttConnect() {
+
+  while (!mqttClient.connected()) {
+    Serial.print("Attempting MQTT connection...");
+
+    if (mqttClient.connect(mqttClientName, mqttUser, mqttPass)) {
+      Serial.println("connected");
+      mqttClient.publish(topic, mqttClientName);
+    } else {
+      Serial.print("failed, rc=");
+      Serial.print(mqttClient.state());
+      Serial.println(" try again in 5 seconds");
+      delay(5000);
+    }
+  }
+}
+
+void setup() {
+
+  Serial.begin(115200);
+  Serial.println("Hello");
+  pixels.begin();  // INITIALIZE NeoPixel strip object (REQUIRED)
+
+  pixels.setPixelColor(0, pixels.Color(150, 0, 0));
+  pixels.show();  // Turn light to red
+
+  // Connect to wifi
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.print("Connected to ");
+  Serial.println(ssid);
+  Serial.print("IP address: ");
+  Serial.println(WiFi.localIP());
+
+  pixels.setPixelColor(0, pixels.Color(0, 0, 150));
+  pixels.show();  // Turn light to blue when connected to wifi
+
+  // MQTT setup
+  mqttClient.setServer(mqttBroker, 1883); // replace 1883 with port
+}
+
+char msg[50];
+bool msgSent = false;
+
+void loop() {
+  if(!msgSent) {
+    // Check if we are still connected to the MQTT broker
+    if (!mqttClient.connected()) {
+      mqttConnect();
+    }
+
+    // Let PubSubClient library do his magic
+    mqttClient.loop();
+
+    // Scan for existing networks:
+    Serial.println("Scanning available networks...");
+    String numNetworks = listNetworks();
+
+    numNetworks.toCharArray(msg, 50);
+    Serial.print("sending to broker: ");
+    Serial.println(numNetworks);
+
+    mqttClient.publish(topic, msg);
+
+    pixels.setPixelColor(0, pixels.Color(0, 150, 0));
+    pixels.show();  // Turn light green when data is sent
+
+    msgSent = true;
+  }
+}
+
+String listNetworks() {
+  int numFree = 0;
+
+  // Scan for nearby networks:
+  Serial.println("** Scan Networks **");
+  int numSsid = WiFi.scanNetworks();
+  if (numSsid != -1) {
+    // Print the list of networks seen:
+    Serial.print("number of available networks:");
+    Serial.println(numSsid);
+
+    // Print the network number and name for each network found:
+    for (int thisNet = 0; thisNet < numSsid; thisNet++) {
+      Serial.print(thisNet);
+      Serial.print(") ");
+      Serial.print(WiFi.SSID(thisNet));
+      Serial.print("\tSignal: ");
+      Serial.print(WiFi.RSSI(thisNet));
+      Serial.print(" dBm");
+      Serial.print("\tEncryption: ");
+      Serial.println(WiFi.encryptionType(thisNet) ? 0: "Goodpeople");
+      // check and add to count of the network has no password 
+      if(WiFi.encryptionType(thisNet) == 0) {
+        numFree++;
+      }
+    }
+  } 
+    return String(numSsid) + "," + String(numFree);
+}
+
+