duplo bluetooth attempt

legofail.py

import uasyncio as asyncio
import aioble
import bluetooth
from micropython import const
import time
import struct 


print("All aboard")

PRIMARY = bluetooth.UUID("00001623-1212-efde-1623-785feabcd123")
CHAR = bluetooth.UUID("00001624-1212-efde-1623-785feabcd123")

# 00001624-1212-efde-1623-785feabcd123 
async def find_train():

    device_list = [ ]
    async with aioble.scan(5000, interval_us=30000, window_us=30000, active=True) as scanner:
        async for result in scanner:
            name = result.name()
            if name:
                if "Train" in name:
                    
                    print("choo choo Found")
                    return result.device
    return None

async def main():
    device = await find_train()
    
    if not device:
        print("Unable to connect to train :(")
        return
    
    
    try:
        print("Connecting to", device)
        connection = await device.connect()
    except asyncio.TimeoutError:
        print("Timeout during connection")
        return   
    print("Choo Choo connected")
    
    
    time.sleep(1)
    
    async with connection:
        not_connected = True
        while not_connected:
            try:
                foo_service = await connection.service(PRIMARY)
                time.sleep(1)
                foo_characteristic = await foo_service.characteristic(CHAR)
                print("Service ... serviced")
                not_connected = False
            except Exception as e:
                print("service .... not serviced")
                time.sleep(1)
     
     
        time.sleep(2)
        
        retry = 10
        c = 0
     
        #time.sleep(6)
        # sound 129, 1, 17, 81, 1, 9
        c1 = [ 129,0,0,81,0,90]
        c2 = [ 129, 0, 17, 81, 0, 100 ]
        
        comm = [ 0x81, 0x00, 0x11,0x51, 0x00,0x50 ]
        
        asdf =  comm
    
        #foo_characteristic.connection.l2cap_connect()
        
        print("..................................")
        a = foo_characteristic.connection
        for i in dir(a):
            print(i)
            
        print("===================================")
            
        print(foo_characteristic.connection.pair())
        
        foo_characteristic.write(comm)
        
        time.sleep(1)
        print("C")
        
asyncio.run(main())