pythonista bluetooth

from __future__ import print_function
import sys, cb, time, console

console.set_color(0, 0, 1)
print("""
  _____       _     _____ _
 |     |___ _| |___| __  | |_ _ ___
 |   --| . | . | -_| __ -| | | | -_|
 |_____|___|___|___|_____|_|___|___|

""")
console.set_color()


class codeBlue (object):
    def did_update_state(self):
        print('did_update_state()')

    def did_discover_peripheral(self, p):
        print('did_discover_peripheral({})'.format(p.name))
        self.peripheral = p
        cb.connect_peripheral(p)

    def did_connect_peripheral(self, p):
        print('did_connect_peripheral({})'.format(p.name))
        p.discover_services()
        print("")
        for i in range(4):
            sys.stdout.write("\rConnecting" + "." * i)
            time.sleep(1)
        time.sleep(2)
        sys.stdout.write("\nDevice Status: ")
        console.set_color(1, 0, 0)
        console.set_font('Chalkduster', 14)
        sys.stdout.write("Connected\n")
        console.set_font()
        console.set_color()

    def did_fail_to_connect_peripheral(self, p, error):
        print("Failed to connect.")
        cb.connect_peripheral(p)

    def did_disconnect_peripheral(self, p, error):
        print("Disconnected.")
        self.peripheral = None

    def did_discover_services(self, p, error):
        print('did_discover_services({})'.format(p.name))
        cb.get_state()
        print("Name:", p.name)
        print("UUID:", p.uuid)
        try:
            state = 'Disconnected Connecting Connected'.split()[p.state]
        except IndexError:
            state = 'Invalid state ({})'.format(p.state)
        print("STAT: ", state)
        time.sleep(0.4)
        print("AUTH:", cb.CH_PROP_AUTHENTICATED_SIGNED_WRITES)
        time.sleep(0.4)
        print("Properties:", cb.CH_PROP_EXTENDED_PROPERTIES)
        time.sleep(0.4)
        print("Indicate:", cb.CH_PROP_INDICATE)
        time.sleep(0.4)
        print("Encryption:", cb.CH_PROP_NOTIFY_ENCRYPTION_REQUIRED)
        time.sleep(0.4)
        print("{} Services:".format(len(p.services)))
        for s in p.services:
            print("-" + str(s.uuid))
        p.discover_characteristics(s)

    def did_discover_characteristics(self, s, error):
        print("Characteristics:")
        for c in s.characteristics:
            print("-" + str(c.uuid))
            # s.set_notify_value(c, True)
            s.read_characteristic_value(c)
            data = s.read_characteristic_value(c)
            print(c.value, data)

    def did_write_value(self, c, error):
        print(self.peripheral.properties)
        time.sleep(0.5)

    def did_update_value(self, c, error):
        time.sleep(0.5)

delegate = codeBlue()
for i in range(4):
    sys.stdout.write("\rScanning For Devices" + "." * i)
    time.sleep(1)
print('\n0')
cb.set_central_delegate(delegate)
print(1)
cb.scan_for_peripherals()
print(2)

try:
    while True:
        pass
except KeyboardInterrupt:
    cb.reset()
    cb.stop_scan()
    sys.exit()

Dear qunwang6, thank you for sharing this code which works on my iPad but it discovers only my printer and no other devices which are paired to my iPad, did you continue working on bluetooth with pythonista?