from machine import Pin
import bluetooth
from BLE import BLEUART

LED  = Pin(2, Pin.OUT)
#LED.on()
name = 'ESP'
ble = bluetooth.BLE()
uart = BLEUART(ble, name)

def on_rx():
    rx_buffer  = uart.read().decode().strip()
    uart.write('ESP32 says: ' + str(rx_buffer) + '\n')
    
    if rx_buffer == '0':
        LED.on()
    if rx_buffer == 'F':
        LED.off()

uart.irq(handler=on_rx)