Return-Path: <linux-bluetooth-owner@vger.kernel.org>
MIME-Version: 1.0
In-Reply-To: <CAAu3APZy=NAKySrY5xUJt+arxvk3KPG4_rZULYuK84MjYWfk0g@mail.gmail.com>
References: <8474DEA7-88A2-4AE7-953E-64AC24B1881F@gmail.com>
 <CABBYNZJm0ViS8PZmHRno4T_rOjcJzvQbMfDMmAZ9W5xf-d9Bkg@mail.gmail.com> <CAAu3APZy=NAKySrY5xUJt+arxvk3KPG4_rZULYuK84MjYWfk0g@mail.gmail.com>
From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Date: Mon, 8 May 2017 13:18:33 +0300
Message-ID: <CABBYNZKM=EsXfRB1EOiB+7ojaSwXypQWPSGqromVJYtoQ+7Kug@mail.gmail.com>
Subject: Re: BLE Advertisement frustrations with pydbus
To: Barry Byford <31baz66@gmail.com>
Cc: Travis Griggs <travisgriggs@gmail.com>,
        Bluez mailing list <linux-bluetooth@vger.kernel.org>
Content-Type: text/plain; charset=UTF-8
Sender: linux-bluetooth-owner@vger.kernel.org
List-ID: <linux-bluetooth.vger.kernel.org>

Hi Barry,

On Mon, May 8, 2017 at 11:51 AM, Barry Byford <31baz66@gmail.com> wrote:
> Hello Luiz & Travis,
>
> I've been taking a look at this also
>
> On 8 May 2017 at 09:01, Luiz Augusto von Dentz <luiz.dentz@gmail.com> wro=
te:
>> On Sat, May 6, 2017 at 1:28 AM, Travis Griggs <travisgriggs@gmail.com> w=
rote:
>>> $ sudo busctl get-property :1.5 /nic/twigpilot org.bluez.LEAdvertisemen=
t1 Type
>>> s =E2=80=9Cperipheral"
>>>
>>> So I *am* able to get the Type using busctl. Why is that bluetoothd can=
not? Using busctl introspect, I see that the pydbus variant automagically m=
akes a lot more available than the dubs-python variant did.
>>>
>>> Any hints? Pointers? Help?
>>
>> Does pydbus have ObjectManager support?
>
> Looking at the following entry in the libraries issue list it seems
> like it does.
> https://github.com/LEW21/pydbus/issues/28
> Is there anything in particular we should be testing for?

This is support for ObjectManager as a client, I was asking for the
server side so we can query the advertisement objects. Though this
used to work even without ObjectManager support so perhaps there is
some regression.

>
>> What about GetAll properties?
> Yes it does. It creates these standard interfaces automatically based
> on the XML in the Python class doc string. So for example Get and
> GetAll give the following:
>
>
> $ busctl call ukBaz.bluezero /ukBaz/bluezero
> org.freedesktop.DBus.Properties Get ss org.bluez.LEAdvertisement1 Type
>
> v s "peripheral"
>
> $ busctl call ukBaz.bluezero /ukBaz/bluezero
> org.freedesktop.DBus.Properties GetAll s org.bluez.LEAdvertisement1
>
> a{sv} 3 "Type" s "peripheral" "SolicitUUIDs" as 1 "180F"
> "IncludeTxPower" b false
>
>
>> You could perhaps try to sniff the message with eavesdrop option:
>>
>> https://wiki.ubuntu.com/DebuggingDBus
>
> Good suggestion. I'll try that later.
>
>>
>>> TIA
>>>
>>> =E2=80=94=E2=80=94
>>>
>>> #!/usr/bin/env python3
>>>
>>> import pydbus
>>> from gi.repository import GLib
>>>
>>> class Advertisement(object):
>>>     """
>>>       <node>
>>>         <interface name=3D"org.bluez.LEAdvertisement1">
>>>           <method name=3D"Release">
>>>             <annotation name=3D"org.freedesktop.DBus.Method.NoReply" va=
lue=3D"true"/>
>>>           </method>
>>>           <annotation name=3D"org.freedesktop.DBus.Properties.Propertie=
sChanged" value=3D"const"/>
>>>           <property name=3D"Type" type=3D"s" access=3D"read"/>
>>>           <property name=3D"ServiceUUIDs" type=3D"as" access=3D"read"/>
>>>           <property name=3D"ManufacturerData" type=3D"a{sv}" access=3D"=
read"/>
>>>           <property name=3D"SolicitUUIDs" type=3D"as" access=3D"read"/>
>>>           <property name=3D"ServiceData" type=3D"a{sv}" access=3D"read"=
/>
>>>           <property name=3D"IncludeTxPower" type=3D"b" access=3D"read"/=
>
>>>         </interface>
>>>       </node>
>>>     """
>>>
>>>     def __init__(self, bus):
>>>         self.Type =3D 'peripheral'
>>>         self.ServiceUUIDs =3D []
>>>         self.ManufacturerData =3D {}
>>>         self.SolicitUUIDs =3D []
>>>         self.ServiceData =3D {}
>>>         self.IncludeTxPower =3D False
>>>         bus.register_object('/nic/twigpilot', self, None)
>>>
>>>     def Release(self):
>>>         print('{}: Advertisement Released!'.format(self))
>>>
>>>
>>> def main():
>>>     bus =3D pydbus.SystemBus()
>>>     adaptor =3D bus.get('org.bluez', '/org/bluez/hci0')
>>>     adaptor.Powered =3D True
>>>     adaptor.Alias =3D 'SeeMe'
>>>
>>>     advertisement =3D Advertisement(bus)
>>>     advertisement.IncludeTxPower =3D True
>>>
>>>     #adaptor.RegisterAdvertisement('/nic/twigpilot', {})
>>>
>>>     loop =3D GLib.MainLoop()
>>>     try:
>>>         loop.run()
>>>     except KeyboardInterrupt:
>>>         loop.quit()
>>>
>>> if __name__ =3D=3D '__main__':
>>>     main()--
>>> To unsubscribe from this list: send the line "unsubscribe linux-bluetoo=
th" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>
>>
>> --
>> Luiz Augusto von Dentz
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-bluetoot=
h" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html



--=20
Luiz Augusto von Dentz