Hi Luiz,
this was our fault. We do get the offset in fact ( in the 2nd+ packet ) but overlooked it because the first testcase was below the MTU.
Wenn sending bigger packets we get the offset:
Keyhandling.ReadValue(), options={'device': '/org/bluez/hci0/dev_4B_45_58_BE_EB_75'}
Keyhandling.ReadValue(), options={'device': '/org/bluez/hci0/dev_4B_45_58_BE_EB_75', 'offset': 184}
Keyhandling.ReadValue(), options={'device': '/org/bluez/hci0/dev_4B_45_58_BE_EB_75', 'offset': 368}
It might be i good idea in terms of usability to send the offset with the value=0 in the first packet anyway.
sorry fort he noise & thanks for the help!
Matthias
Matthias Schmidt
Senior Architect
diva-e Karlsruhe
Ludwig-Erhard-Allee 20, 76131 Karlsruhe, Deutschland
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Am 24.11.17, 10:21 schrieb "Luiz Augusto von Dentz" <luiz.dentz@xxxxxxxxx>:
Hi Matthias,
On Fri, Nov 24, 2017 at 11:18 AM, Matthias Schmidt
<Matthias.Schmidt@xxxxxxxxxx> wrote:
> Hi Luiz,
>
> we never get the offset.
>
> Nevertheless we get the correct number of requests to transmit the data, but never any offset.
Lets first check if the remote is sending any offset, can you collect
the trace with btmon and post it here?
> HTH,
>
> Matthias
>
> Matthias Schmidt
> Senior Architect
>
> diva-e Karlsruhe
> Ludwig-Erhard-Allee 20, 76131 Karlsruhe, Deutschland
> T: +49 721 92060 822
> M: +49 175 2694213
> matthias.schmidt@xxxxxxxxxx
>
> CE27 BF59 3651 2619 8A5D 08CA 0839 2E99 3449 4A32
>
>
>
> Public Key: matthias-schmidt-diva-e-com-34494A32.asc <https://owncloud.diva-e.com/index.php/s/RJYDK9Ypfnxqscg/download>
>
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>
> -------------------------------------------------
> diva-e | Netpioneer GmbH
> Ludwig-Erhard-Allee 20, 76131 Karlsruhe
> HRB: 107521 Handelsregister Mannheim
> Geschäftsführung: Marcel Fuhlmann, Stefan Märkle, Axel Jahn
>
>
> Am 24.11.17, 09:28 schrieb "Luiz Augusto von Dentz" <luiz.dentz@xxxxxxxxx>:
>
> Hi Matthias,
>
> On Thu, Nov 23, 2017 at 5:05 PM, Matthias Schmidt
> <Matthias.Schmidt@xxxxxxxxxx> wrote:
> > Hi *,
> >
> > despite the ReadValue Documentation:
> >
> > Methods array{byte} ReadValue(dict options)
> >
> > Issues a request to read the value of the
> > characteristic and returns the value if the
> > operation was successful.
> >
> > Possible options: "offset": uint16 offset
> > "device": Object Device (Server only)
> >
> > We don’t get the offset value, but only the device entry:
> >
> > Keyhandling.ReadValue(), options={'device': '/org/bluez/hci0/dev_45_4A_B8_B8_BA_09'}
> >
> > We are running Bluez 5.47 on Debian Stretch on armv7l.
> >
> > What have we done wrong?
>
> Is the offset 0? We only send the offset if it is different than 0:
>
> https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/src/gatt-database.c#n1719
>
> > Cheers,
> >
> > Matthias
> >
> > Matthias Schmidt
> > Senior Architect
> >
> > diva-e Karlsruhe
> > Ludwig-Erhard-Allee 20, 76131 Karlsruhe, Deutschland
> > T: +49 721 92060 822
> > M: +49 175 2694213
> > matthias.schmidt@xxxxxxxxxx
> >
> > CE27 BF59 3651 2619 8A5D 08CA 0839 2E99 3449 4A32
> >
> >
> >
> > Public Key: matthias-schmidt-diva-e-com-34494A32.asc <https://owncloud.diva-e.com/index.php/s/RJYDK9Ypfnxqscg/download>
> >
> > www.diva-e.com <https://www.diva-e.com/> follow us: twitter <https://twitter.com/diva_enterprise>, facebook <https://www.facebook.com/digital.value.enterprise/?ref=hl>, LinkedIn <https://www.linkedin.com/company/diva-e-digital-value-enterprise-gmbh>, Xing <https://www.xing.com/companies/diva-edigitalvalueenterprisegmbh>
> >
> > -------------------------------------------------
> > diva-e | Netpioneer GmbH
> > Ludwig-Erhard-Allee 20, 76131 Karlsruhe
> > HRB: 107521 Handelsregister Mannheim
> > Geschäftsführung: Marcel Fuhlmann, Stefan Märkle, Axel Jahn
> >
> >
>
>
>
> --
> Luiz Augusto von Dentz
>
>
--
Luiz Augusto von Dentz
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