bluezero callback with options test

test2.py

from bluezero import adapter
from bluezero import peripheral
from bluezero import device
import random
import struct

SERVICE = 'CBBA1804-1D4F-4499-93CD-EFFB94989E94'
OPT_CHAR = '53E648D7-45B6-423A-BED9-D1234C30023F'
NO_OPT_CHAR = '35045198-AB93-4073-95AA-9AFDF761B106'

def on_connect(ble_device: device.Device):
    print("Connected to " + str(ble_device.address))

def on_disconnect(adapter_address, device_address):
    print("Disconnected from " + device_address)

def getAddress(options):
    return ''.join(options['device'].split('_')[1:])

cnts = {}
def cb_with_options(options):
    ''' Callback with passing options - uses device address from options to keep a running counter of the number of times it was called, and return the count as LE 2-byte int'''
    print(f'Calling with options: {options}')
    a = getAddress(options)
    cnt = cnts.setdefault(a,0)
    cnt += 1
    cnts[a]=cnt
    print(f'returning: {cnt}')
    return struct.pack('<h',cnt)

def cb_no_options():
    ''' Callback without options - just return a random number as LE 2-byte int'''
    print('Calling without options')
    num = random.randint(0,1000)
    print(f'returning: {num}')
    return struct.pack('<h',num)

def main(adapter_address):
    p = peripheral.Peripheral(adapter_address,local_name='Options Callback Test')
    p.add_service(srv_id=1, uuid=SERVICE, primary=True)
    
    p.add_characteristic(
        srv_id=1,
        chr_id=1,
        uuid=OPT_CHAR,
        value=[],
        notifying=False,
        flags=['read'],
        read_callback=cb_with_options
    )
    
    p.add_characteristic(
        srv_id=1,
        chr_id=2,
        uuid=NO_OPT_CHAR,
        value=[],
        notifying=False,
        flags=['read'],
        read_callback=cb_no_options
    )
    p.on_connect = on_connect
    p.on_disconnect = on_disconnect
    p.publish()
    
if __name__ == '__main__':
    addr = list(adapter.Adapter.available())[0].address
    main(addr)