from machine import Pin 
import bluetooth
from ble_simple_peripheral import BLESimplePeripheral

ble = bluetooth.BLE()
sp = BLESimplePeripheral(ble)

LED0 = Pin("LED", Pin.OUT)

def on_rx(data):
    print("Data received: ", data)
    if data == b'LED0\r\n':
        LED0.toggle()

while(1):
    if sp.is_connected():
        sp.on_write(on_rx)