Adafruit Bluefruit BLE bluetooth proximity bike light

code.py

import time

import adafruit_ble
from adafruit_ble import BLERadio
from adafruit_ble.advertising import Advertisement
from adafruit_ble.advertising.standard import ProvideServicesAdvertisement
from adafruit_ble.services.standard.device_info import DeviceInfoService
# from adafruit_ble.services.standard.hid import HIDService
from adafruit_circuitplayground import cp

from blink import blink

ble = BLERadio()

# hid = HIDService()
device_info = DeviceInfoService(software_revision=adafruit_ble.__version__,
                                manufacturer="Adafruit Industries")
advertisement = ProvideServicesAdvertisement(device_info)
advertisement.appearance = 0x7c2
scan_response = Advertisement()
scan_response.complete_name = "Tail light"

ble = adafruit_ble.BLERadio()

def try_to_connect():
    if not ble.connected:
        print("advertising")
        ble.start_advertising(advertisement, scan_response)
        while not ble.connected:
            pass
    else:
        print("already connected")
        print(ble.connections)

cp.pixels.brightness = 1

while True:
    while not cp.switch:
        time.sleep(5)
        
    while not ble.connected:
        try_to_connect()
    print("Connected")
    cp.red_led = 1
    while cp.switch and ble.connected:
        blink()
    cp.red_led = 0