Bluetooth services is not started

[livius]

@nagarjuna-reddy
you removed it before loop but better here if you remove it from loop
only connect before (you have only one disconnect)

[st3ty]

I have the exact same problem.

I am trying to connect two Wipys via bluetooth.
I get the connection on both sides.
But the programm frezzes with the line services = connection.services()

Is this a bug or is it a problem with my code?

from network import Bluetooth
import binascii

bluetooth = Bluetooth()

bluetooth.start_scan(-1)

adv = None

while True:


    adv = bluetooth.get_adv()

    if adv and bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL) == 'WiPy':

        if bluetooth.isscanning():
            bluetooth.stop_scan()

        try:

            connection = bluetooth.connect(adv.mac)

            while not connection.isconnected():
                pass

            if connection.isconnected():

                print("Connected to device with addr = {}".format( binascii.hexlify( adv.mac ) ) )
                print("and name = ", bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL))
                break

        except:
            # start scanning again
            bluetooth.start_scan(-1)
            continue

print('test1')
services = connection.services()
print('test2')

[Nagarjuna Reddy]

@livius
i cannot understand livius so edit my code and send to me please........

[livius]

i only mean that you must connect only once and for one connect you need one disconnect
below "fixed" code in this matter
i have also added small sleep time - look if it help somehow with your problem (i do not tested this self)

def ble_reciever(self):
		bluetooth = Bluetooth()
		print("Scanning 4509 client")
		bluetooth.start_scan(-1)

		while True:
			adv = bluetooth.get_adv()
			#if adv:
				#print("Found adv in 4509 client")
				# try to get the complete name
				#print(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL))

				# try to get the manufacturer data (Apple's iBeacon data is sent here)
				#print(binascii.hexlify(bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_MANUFACTURER_DATA)))


			if adv and bluetooth.resolve_adv_data(adv.data, Bluetooth.ADV_NAME_CMPL) == 'LoPy':
				print("connecting rr Lopy in 4509 client")					
				conn = bluetooth.connect(adv.mac)					
				print("connected Lopy in 4509 client")  	
				
				services = conn.services()				 
				for service in services:
					time.sleep(0.050)
					print("start reading..")
					if type(service.uuid()) == bytes:
						print('Reading chars from service = {}'.format(service.uuid()))
					else:
						print('Reading chars from service = %x' % service.uuid())
					chars = service.characteristics()
					for char in chars:
						if (char.properties() & Bluetooth.PROP_READ):
							print('char {} value = {}'.format(char.uuid(), char.read()))
							
				conn.disconnect()
				print("Disconnected 4509 client")
				break
			else:
				time.sleep(0.050)

	def ble_transmitter(self):

		print('Advertising Bluetooth...')
		bluetooth = Bluetooth()
		bluetooth.set_advertisement(name='LoPy', service_uuid=b'1234567890abcdef')

		def conn_cb (bt_o):
			events = bt_o.events()
			if  events & Bluetooth.CLIENT_CONNECTED:
				print("Client connected")
			elif events & Bluetooth.CLIENT_DISCONNECTED:
				print("Client disconnected")

		bluetooth.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=conn_cb)
		bluetooth.advertise(True)

		#Create service and characteristic
		srv1 = bluetooth.service(uuid='0000000000000000', isprimary=True)
		chr1 = srv1.characteristic(uuid='0000000000000002', properties=Bluetooth.PROP_INDICATE | Bluetooth.PROP_BROADCAST | Bluetooth.PROP_READ | Bluetooth.PROP_NOTIFY, value='InitialValue')

		#Create callback for read events on the characteristic
		def char1_cb(chr):
			events = chr.events()
			if events & Bluetooth.CHAR_READ_EVENT :
				print('Bluetooth.CHAR_READ_EVENT')

		chr1.callback(trigger=Bluetooth.CHAR_READ_EVENT, handler=char1_cb)

		#Update the characteristic value very few seconds
		#i=0
		while True:
			val = 'Value{}'.format(i)
			print('Setting value: {}'.format(val))
			chr1.value(val) #Set the characteristic value - should trigger notification is a client has registered for notifications
			time.sleep(3)
			i+=1

[Nagarjuna Reddy]

@livius said in Bluetooth services is not started:

Bluetooth.CHAR_READ_EVENT

transmitter run in one LoPy and reciever LoPy is connected but not get any values from transmitter side i want to
bolded text

i=0
while True:
val = 'Value{}'.format(i)
print('Setting value: {}'.format(val))
chr1.value(val) #Set the characteristic value - should trigger notification is a client has registered for notifications
time.sleep(3)
i+=1
this is a transmitter side loop this loop values is getting to once connected reciever is recieved that for loop values but in their not iam getting so please solve my problem

[Nagarjuna Reddy]

@nagarjuna-reddy
livius you already edit my code but same problem i am getting what iam expected output is sending before message so please check and replay it arguently.

[Nagarjuna Reddy]

@livius

ivius
you already edit my code but same problem i am getting what iam expected output is sending before message so please check and replay it urgently.

[Nagarjuna Reddy]

@st3ty

hi i am also have a same problem if you success to execute please send your code to me.
Thank you

[jmahesh]

@nagarjuna-reddy said in Bluetooth services is not started:

conn.disconnect()

Hi,
put a sleep time before service loop, that will make the services to read. I tried and it is working.

time.sleep(1.0);
print('sleep resumed', conn.services())
services = conn.services()
print(services)
for service in conn.services():

[st3ty]

@jmahesh

Hi,

I tried it too and it's working.

Thank You!