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Adding example for WifiManager library
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‎examples/ESP8266/UsingWiFiManager/README.md

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#ESP8266 - Flashled Bot
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This is a basic example of how to receive commands using UniversalTelegramBot for ESP8266 based boards.
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The application will turn on and off an LED based on commands received via telegram.
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Application originally written by [Giancarlo Bacchio]([email protected]) for [ESP8266-TelegramBot library](https://github.com/Gianbacchio/ESP8266-TelegramBot)
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Adapted by [Brian Lough](https://github.com/witnessmenow)
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NOTE: You will need to enter your SSID, password and bot Token for the example to work.
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## License
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You may copy, distribute and modify the software provided that modifications are described and licensed for free under [LGPL-3](http://www.gnu.org/licenses/lgpl-3.0.html). Derivatives works (including modifications or anything statically linked to the library) can only be redistributed under [LGPL-3](http://www.gnu.org/licenses/lgpl-3.0.html), but applications that use the library don't have to be.

‎examples/ESP8266/UsingWiFiManager/UsingWiFiManager.ino

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/*******************************************************************
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* An example that uses the WifiManager library for wifi *
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* wifi connection. bot that receives commands and turns on and *
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* off an LED. *
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* *
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* written by Brian Lough *
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*******************************************************************/
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#include <ESP8266WiFi.h>
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#include <WiFiClientSecure.h>
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#include <UniversalTelegramBot.h>
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#include <EEPROM.h>
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#include <DNSServer.h> //Local DNS Server used for redirecting all rs to the configuration portal
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#include <ESP8266WebServer.h> //Local WebServer used to serve the configuration portal
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#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager WiFi Configuration Magic
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#define BOT_TOKEN_LENGTH 46
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const int ledPin = D4;
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const int resetConfigPin = D3; //When high will reset the wifi manager config
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char botToken[BOT_TOKEN_LENGTH] = "";
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WiFiClientSecure client;
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UniversalTelegramBot *bot;
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int Bot_mtbs = 1000; //mean time between scan messages
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long Bot_lasttime; //last time messages' scan has been done
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bool Start = false;
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int ledStatus = 0;
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//flag for saving data
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bool shouldSaveConfig = false;
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//callback notifying us of the need to save config
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void saveConfigCallback () {
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Serial.println("Should save config");
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shouldSaveConfig = true;
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}
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void readBotTokenFromEeprom(int offset){
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for(int i = offset; i<BOT_TOKEN_LENGTH; i++ ){
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botToken[i] = EEPROM.read(i);
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}
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EEPROM.commit();
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}
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void writeBotTokenToEeprom(int offset){
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for(int i = offset; i<BOT_TOKEN_LENGTH; i++ ){
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EEPROM.write(i, botToken[i]);
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}
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EEPROM.commit();
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}
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void handleNewMessages(int numNewMessages) {
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Serial.println("handleNewMessages");
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Serial.println(String(numNewMessages));
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for(int i=0; i<numNewMessages; i++) {
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String chat_id = String(bot->messages[i].chat_id);
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String text = bot->messages[i].text;
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if (text == "/ledon") {
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digitalWrite(ledPin, HIGH); // turn the LED on (HIGH is the voltage level)
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ledStatus = 1;
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bot->sendMessage(chat_id, "Led is ON", "");
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}
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if (text == "/ledoff") {
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ledStatus = 0;
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digitalWrite(ledPin, LOW); // turn the LED off (LOW is the voltage level)
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bot->sendMessage(chat_id, "Led is OFF", "");
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}
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if (text == "/status") {
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if(ledStatus){
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bot->sendMessage(chat_id, "Led is ON", "");
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} else {
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bot->sendMessage(chat_id, "Led is OFF", "");
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}
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}
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if (text == "/start") {
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String welcome = "Wellcome from FlashLedBot, your personal Bot on ESP8266 board \n";
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welcome = welcome + "/ledon : to switch the Led ON \n";
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welcome = welcome + "/ledoff : to switch the Led OFF \n";
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welcome = welcome + "/status : Returns current status of LED \n";
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bot->sendMessage(chat_id, welcome, "Markdown");
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}
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}
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}
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void setup() {
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Serial.begin(115200);
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EEPROM.begin(BOT_TOKEN_LENGTH);
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pinMode(resetConfigPin, INPUT);
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pinMode(ledPin, OUTPUT); // initialize digital ledPin as an output.
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delay(10);
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digitalWrite(ledPin, LOW); //initilase pin as off
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Serial.println("read bot token");
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readBotTokenFromEeprom(0);
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Serial.println(botToken);
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WiFiManager wifiManager;
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wifiManager.setSaveConfigCallback(saveConfigCallback);
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//Adding an additional config on the WIFI manager webpage for the bot token
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WiFiManagerParameter custom_bot_id("botid", "Bot Token", botToken, 50);
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wifiManager.addParameter(&custom_bot_id);
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//If it fails to connect it will create a TELEGRAM-BOT access point
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wifiManager.autoConnect("TELEGRAM-BOT");
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strcpy(botToken, custom_bot_id.getValue());
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if (shouldSaveConfig) {
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writeBotTokenToEeprom(0);
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}
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bot = new UniversalTelegramBot(botToken, client);
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.println("IP address: ");
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IPAddress ip = WiFi.localIP();
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Serial.println(ip);
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}
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void loop() {
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if ( digitalRead(resetConfigPin) == LOW ) {
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Serial.println("Reset");
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WiFi.disconnect();
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Serial.println("Dq");
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delay(500);
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ESP.reset();
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delay(5000);
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}
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if (millis() > Bot_lasttime + Bot_mtbs) {
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int numNewMessages = bot->getUpdates(bot->last_message_recived + 1);
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while(numNewMessages) {
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Serial.println("got response");
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handleNewMessages(numNewMessages);
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numNewMessages = bot->getUpdates(bot->last_message_recived + 1);
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}
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Bot_lasttime = millis();
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}
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}

‎src/UniversalTelegramBot.cpp

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while (millis()<sttime+8000) { // loop for a while to send the message
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String command="bot"+_token+"/sendMessage?chat_id="+chat_id+"&text="+text+"&parse_mode="+parse_mode;
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String response = sendGetToTelegram(command);
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Serial.println(response);
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//Serial.println(response);
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sent = checkForOkResponse(response);
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if(sent){
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break;
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while (millis()<sttime+8000) { // loop for a while to send the message
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String command = "bot"+_token+"/sendMessage";
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String response = sendPostToTelegram(command, payload);
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Serial.println(response);
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//Serial.println(response);
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sent = checkForOkResponse(response);
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if(sent){
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break;

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