# Use nRF Connect from App store, connect to the Nano and write 1/0 to control the LED. import time from board import LED from ubluepy import Service, Characteristic, UUID, Peripheral, constants def event_handler(id, handle, data): global periph global service if id == constants.EVT_GAP_CONNECTED: pass elif id == constants.EVT_GAP_DISCONNECTED: # restart advertisment periph.advertise(device_name="Nano Blinky", services=[service]) elif id == constants.EVT_GATTS_WRITE: LED(1).on() if int(data[0]) else LED(1).off() # start off with LED(1) off LED(1).off() notif_enabled = False uuid_service = UUID("0x1523") uuid_led = UUID("0x1525") service = Service(uuid_service) char_led = Characteristic(uuid_led, props=Characteristic.PROP_WRITE) service.addCharacteristic(char_led) periph = Peripheral() periph.addService(service) periph.setConnectionHandler(event_handler) periph.advertise(device_name="Nano Blinky", services=[service]) while (True): time.sleep_ms(500)