ESP8266 + TelegramBot

#include "CTBot.h"
#include "Adafruit_Si7021.h"



// Initialize Wifi connection to the router
String ssid = "";
String pass = "";

// Initialize Telegram BOT
String token = "";


uint8_t led = BUILTIN_LED;
Adafruit_Si7021 sensor = Adafruit_Si7021();
CTBot myBot;


void setup() {
	// initialize the Serial
	Serial.begin(115200);
  while (!Serial);

  
	Serial.println("\nStarting TelegramBot...");
	// connect the ESP8266 to the desired access point
	myBot.wifiConnect(ssid, pass);

	// set the telegram bot token
	myBot.setTelegramToken(token);

	// check if all things are ok
	if (myBot.testConnection())
		Serial.println("\ntestConnection OK");
	else
		Serial.println("\ntestConnection NOK");


	// set the pin connected to the LED to act as output pin
	pinMode(led, OUTPUT);
	digitalWrite(led, HIGH); // turn off the led (inverted logic!)

  while(!sensor.begin());
}




void loop() {
	// a variable to store telegram message data
	TBMessage msg;

	// if there is an incoming message...
	if (myBot.getNewMessage(msg)) {
    Serial.println("\nReceived:");
    Serial.println(msg.text);

		if (msg.text.equalsIgnoreCase("LIGHT ON")) {              // if the received message is "LIGHT ON"...
			digitalWrite(led, LOW);                                 // turn on the LED (inverted logic!)
			myBot.sendMessage(msg.sender.id, "Light is now ON");    // notify the sender
		}
		else if (msg.text.equalsIgnoreCase("LIGHT OFF")) {        // if the received message is "LIGHT OFF"...
			digitalWrite(led, HIGH);                                // turn off the led (inverted logic!)
			myBot.sendMessage(msg.sender.id, "Light is now OFF");   // notify the sender
		}
    else if(msg.text.equalsIgnoreCase("TEMPERATURE")){
      float temp = sensor.readTemperature();
      String reply = (String)"Temperature: " + (String)temp + (String)"°C";
      myBot.sendMessage(msg.sender.id, reply);
		}
		else {
			// generate the message for the sender
			String reply;
			reply = (String)"Welcome " + msg.sender.username + (String)". Try LIGHT ON or LIGHT OFF.";
			myBot.sendMessage(msg.sender.id, reply);             // and send it
		}
	}
 
	delay(500);
}