micropython-utelegram

This library provides a microPython interface for for a subset of the Telegram Bot API. Have been tested on an ESP32 but should work just fine on an ESP8266

Your first bot

On the demo folder you will find an example bot.

First you'll need to create a new bot using the BotFather to get a token for your bot. Once you have it rename the config.py-demo and set the variables (WiFI SID/password and your bot token):

wifi_config = {
    'ssid':'DEMO',
    'password':'PASSW0RD'
}

utelegram_config = {
    'token': 'TOKEN'
}

If you have your ESP32 connected as /dev/ttyUSB0 you can use the upload.sh script to upload the bot code to your micropython enabled ESP32:

./upload.sh

Example bot code

Initialize bot

To create a new bot you just need to create a ubot object passing the token the BotFather have provided:

bot = utelegram.ubot(utelegram_config['token'])

Register handlers

Handlers will receive the raw message as a parameter:

def reply_ping(message):
    bot.send(message['message']['chat']['id'], 'pong')

Messages will be in the following format:

{
   "update_id":302445393,
   "message":{
      "message_id":1492,
      "from":{
         "id":123456789,
         "is_bot":False,
         "language_code":"en",
         "first_name":"Jordi"
      },
      "text":"/ping",
      "date":1599563930,
      "entities":[
         {
            "offset":0,
            "length":5,
            "type":"bot_command"
         }
      ],
      "chat":{
         "id":123456789,
         "type":"private",
         "first_name":"Jordi"
      }
   }
}

You can register handlers using the register method:

bot.register('/ping', reply_ping)

And optionally set a default handler for any other message:

bot.set_default_handler(get_message)

Reply to messages

Using the send function we can reply to messages, the parameters are:

• chat ID: chat ID is the same as the user ID except for group chats
• message: text to send

For example, we can use the incoming message to get the chat_id to reply to:

bot.send(message['message']['chat']['id'], 'pong')

Bot loop

We can either let the bot loop but itself to reply to messages:

bot.listen()

Or we can loop manually using the read_once() function:

bot.read_once()

Using this method you should add a sleep between each time we poll the Telegram API

Other examples

• Telegram integrated countdown timer