bt_discover on N95

[Chiara81000]

Hi all,
I need to make a Bluetooth RFCOMM connection on N95s running Python for S60 1.4.1 but for the N95 it doesn't work. Does anybody know why?

Script Server-side:

from socket import *
import appuifw

server_socket = socket(AF_BT, SOCK_STREAM)
p = bt_rfcomm_get_available_server_channel(server_socket)
server_socket.bind(("", p))
print "bind done"
server_socket.listen(1)
bt_advertise_service( u"jurgen", server_socket, True, RFCOMM)
set_security(server_socket, AUTH)
print "I am listening"

# Note: Don't call .send or .recv on the server_socket!
# Use the sock object returned by server_socket.accept().
(sock,peer_addr) = server_socket.accept()
print "Connection from %s"%peer_addr
test = appuifw.query(u"Type words", "text", u"")
sock.send(test+'\n')
print "sending done"
import e32
# Allow time for data to be sent to work around a bug in the socket
# module.
e32.ao_sleep(1)
sock.close()

Script Client-side:

import socket
import appuifw
import e32

class BTReader:
    def connect(self):
        self.sock=socket.socket(socket.AF_BT,socket.SOCK_STREAM)
        addr,services=socket.bt_discover()
        print "Discovered: %s, %s"%(addr,services)
        if len(services)>0:
            import appuifw
            choices=services.keys()
            choices.sort()
            choice=appuifw.popup_menu([unicode(services[x])+": "+x
                                       for x in choices],u'Choose port:')
            port=services[choices[choice]]
        else:
            port=services[services.keys()[0]]
        address=(addr,port)
        print "Connecting to "+str(address)+"...",
        self.sock.connect(address)
        print "OK." 
    def readline(self):
        line=[]
        while 1:
            ch=self.sock.recv(1)
            if(ch=='\n'):
                break
            line.append(ch)
        return ''.join(line)
    def close(self):
        self.sock.close()

bt=BTReader()
bt.connect()
print "Received: "+bt.readline()
bt.close()

I have also tried this code with some N71s(running Python for S60 1.4.1). it works in these cases:

Server: N71 - Client N71
Server: N71 - Client N95

it doesn't work if:

Server: N95 - Client N95
Server: N95 - Client N71

In particular what happened is this: on the server side the script seems to be running; on the client side the application make the bt_discover but when i select the server-device on the list the application is turned off.

I hope you can help me
thank you, Chiara

[Chiara81000]

Hi,
the problem is the bluetooth discovery. I tried also this simple code and python got turned off if I select an N95 in the list of the devices.

import socket   
address, services = socket.bt_discover()   
print "Chosen device:", address, services

I have also tried to use the lightblue package, but also with it the bluetooth discover of N95 doesn't work.
Have someone tried this code?

Chiara

[grin44]

I also get the same problem. I tested various combinations of phone types and this bug appears only when N95 is to be discovered (no matter by whom).

Moreover - it is enough to have bluetooth turned on in the N95 - it doesn't matter if you have any server-script running or not.
Also using symbian open-signd python shell didn't help.

Any ideas, anyone?
Thanx in advance
Grin

[grin44]

After enabling panic code display (with sis file form http://www.symbianresources.com/cgi-...bo/dl.pl?ErrRd ) I can now see that the Python closes with error "KERN-EXEC 3", that I found to be described as Null Pointer Exception.. Doesn't sound optymistic...
I hope someone will find out the bug and fix it..

greetings
Grin

[ham_se17]

I have the exact same issue
Any solutions yet? It is really annoying Hope there will be a solution soon...

[gaba88]

I have the exact same issue
Any solutions yet? It is really annoying Hope there will be a solution soon...

hi ham_se17
first of all a warm welcome to the python dibo.
dont worry if it is a bug then it will be fixed as early as possible. But upto that keep up trying some alternatives.

[ham_se17]

hi ham_se17
first of all a warm welcome to the python dibo.
dont worry if it is a bug then it will be fixed as early as possible. But upto that keep up trying some alternatives.

thanks for the welcome
well, I think it must be a bug, I can reproduce the error on 3 different N95, both signed and selfsigned version of python shell (1.4.2) has the same "bug". I need this to work soon because I have a school project where I need a server/client bluetooth communication module...

[pantomas]

Since this is my first post on this forum welcome everybody.

I have similiar error with lightblue library.
However I can discover the N95 with lightblue.finddevices() but when I try to get list of services with lightblue.findservices() Python crashes.
So far it works correctly with other phones.
My N95 is firmware V 20.0.015.

greetings
Tom

[gaba88]

Since this is my first post on this forum welcome everybody.

I have similiar error with lightblue library.
However I can discover the N95 with lightblue.finddevices() but when I try to get list of services with lightblue.findservices() Python crashes.
So far it works correctly with other phones.
My N95 is firmware V 20.0.015.

greetings
Tom

hi phantomas
welcome to the python dibo i hope you will get the best support and help here.
yes this is really a bug. i hope any of the moderator have a look at this thread and should have a comment abt the bug or is it something else.
thanks

[trdillah]

Hello everyone,

I am using the lightblue module. What I would like to do is find the blue tooth devices and launch the available devices in a menu. I would like for someone to be able to choose their "home" device from the list and store their selection. Here's what I have so far but I'm having a hard time dynamically creating the menu. Does anyone have any examples of this?

import appuifw
import lightblue

localDevices = lightblue.finddevices()

List = []
for i in range(0,len(localDevices)):
     print "Device"+str(i+1)+":"
     print localDevices[i][1]
     List.append(localDevices[i][1]

index = appuifw.popup_menu(List, u"Set Home Device")

[bogdan.galiceanu]

Hi,

I'm not sure I understand your question. If you are looking for a more simple (and shorter) way of populating the List array with the elements from localDevices, try this:

import appuifw
import lightblue

localDevices = lightblue.finddevices()

List = [localDevices[i][1] for i in range(len(localDevices))]

index = appuifw.popup_menu(List, u"Set Home Device")

[trdillah]

I think my problem had to do with the way I was appending items to the list. Thanks for your help!

[gaba88]

hi trdillah

i feel that it will be bit difficult to execute your demand in a menu other than that you can opt for the selection list which will be very easy.

Enjoy Pythoning
Gaba88

[trdillah]

Hi,

Thanks for the tip. I'm having a couple of problems that I'm not able to explain. First of all, the following code is returning "No data" as a result of the finddevices call although the Bluetooth Console works fine. Secondly, I would like to know if there is a way to show some type of progress bar, or indicator to the user to indicate that the application is still running. Here is the code I'm working with below:

import appuifw
import lightblue


localDevices = []

def connectToBTDevice():
	localDevices = lightblue.finddevices()
	List = [localDevices[i][1] for i in range(len(localDevices))]
	#index = appuifw.popup_menu(List, u"Set Home Device")
	index = appuifw.selection_list(choices=List , search_field=1)
	if index >= 0:
		localDevices = localDevices[index]

appuifw.app.menu = [(u"Setup Bluetooth Connection", connectToBTDevice)]

# Can there be some type of progress bar to indicate to the user that the #app is still running (besides text)?

running = 1

while(running):
        # now run finddevices again and see if any of the devices were found

	newList = lightblue.finddevices()
	if len(localDevices) > 0:
		for i in range(len(newList)):
			if localDevices == newList[i]:
				print "Match Found!!!"
				running = 0

[gaba88]

Hi,

Thanks for the tip. I'm having a couple of problems that I'm not able to explain. First of all, the following code is returning "No data" as a result of the finddevices call although the Bluetooth Console works fine.

hi
i havent use the lightblue extension but why dont you use the simple socket module to get the list of bluetooth devices.please see the python documentation to get more information.

Secondly, I would like to know if there is a way to show some type of progress bar, or indicator to the user to indicate that the application is still running. Here is the code I'm working with below:

i feel that this is not yet possible in PyS60 but i am not sure.

Enjoy Pythoning
Gaba88