#include <ArduinoMqttClient.h>

#include <WiFi.h>

//#include "arduino_secrets.h"
#define SECRET_SSID ""
#define SECRET_PASS ""

///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID;        // your network SSID (name)
char pass[] = SECRET_PASS;    // your network password (use for WPA, or use as key for WEP)

WiFiClient wifiClient;
MqttClient mqttClient(wifiClient);

const char broker[] = "test.mosquitto.org";
int        port     = 1883;
const char topic[]  = "real_unique_topic";
const char topic2[]  = "real_unique_topic_2";
const char topic3[]  = "real_unique_topic_3";

//set interval for sending messages (milliseconds)
const long interval = 8000;
unsigned long previousMillis = 0;

int count = 0;

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // attempt to connect to Wifi network:
  Serial.print("Attempting to connect to WPA SSID: ");
  Serial.println(ssid);
  while (WiFi.begin(ssid, pass) != WL_CONNECTED) {
    // failed, retry
    Serial.print(".");
    delay(5000);
  }

  Serial.println("You're connected to the network");
  Serial.println();

  Serial.print("Attempting to connect to the MQTT broker: ");
  Serial.println(broker);

  if (!mqttClient.connect(broker, port)) {
    Serial.print("MQTT connection failed! Error code = ");
    Serial.println(mqttClient.connectError());

    while (1);
  }

  Serial.println("You're connected to the MQTT broker!");
  Serial.println();
}

void loop() {
  // call poll() regularly to allow the library to send MQTT keep alive which
  // avoids being disconnected by the broker
  mqttClient.poll();

  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval) {
    // save the last time a message was sent
    previousMillis = currentMillis;

    //record random value from A0, A1 and A2
    int Rvalue = analogRead(A0);
    int Rvalue2 = analogRead(A1);
    int Rvalue3 = analogRead(A2);

    Serial.print("Sending message to topic: ");
    Serial.println(topic);
    Serial.println(Rvalue);

    Serial.print("Sending message to topic: ");
    Serial.println(topic2);
    Serial.println(Rvalue2);

    Serial.print("Sending message to topic: ");
    Serial.println(topic2);
    Serial.println(Rvalue3);

    // send message, the Print interface can be used to set the message contents
    mqttClient.beginMessage(topic);
    mqttClient.print(Rvalue);
    mqttClient.endMessage();

    mqttClient.beginMessage(topic2);
    mqttClient.print(Rvalue2);
    mqttClient.endMessage();

    mqttClient.beginMessage(topic3);
    mqttClient.print(Rvalue3);
    mqttClient.endMessage();

    Serial.println();
  }
}



#include <WiFi.h>

void setup() {
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.println(WiFi.status());
    Serial.println(WL_CONNECTED);
    Serial.print(".");
  }
  Serial.println(" Connected!");
}

void loop() {
  delay(100); // TODO: Build something amazing!
}










/* ESP32 WiFi Scanning example */

#include "ESP8266AutoWifi.h"

void setup() {
  Serial.begin(115200);
  Serial.println("Initializing WiFi...");
  WiFi.mode(WIFI_STA);
  //WiFi.disconnect();
  Serial.println("Setup done!");
}

void loop() {
  Serial.println("Scanning...");

  // WiFi.scanNetworks will return the number of networks found
  int n = WiFi.scanNetworks();
  Serial.println("Scan done!");
  if (n == 0) {
    Serial.println("No networks found.");
  } else {
    Serial.println();
    Serial.print(n);
    Serial.println(" networks found");
    for (int i = 0; i < n; ++i) {
      // Print SSID and RSSI for each network found
      Serial.print(i + 1);
      Serial.print(": ");
      Serial.print(WiFi.SSID(i));
      Serial.print(" (");
      Serial.print(WiFi.RSSI(i));
      Serial.print(")");
      Serial.println((WiFi.encryptionType(i) == WIFI_AUTH_OPEN) ? " " : "*");
      delay(10);
    }
  }
  Serial.println("");

  // Wait a bit before scanning again
  delay(5000);
}