Re: example GATT code to talk with a sensortag

On Tue, Jan 12, 2016 at 10:52:47PM +0100, Łukasz Rymanowski wrote:

Hi Don,

On 11 January 2016 at 23:22, Don Zickus [off-list ref] wrote:

quoted

On Mon, Jan 11, 2016 at 03:43:40PM -0300, Luiz Augusto von Dentz wrote:

quoted

Hi Don,


You will need to pass -E to bluetoothd to enable the experimental
intefaces, btw there is a recent change to GATT server/peripheral so I
suggest you try with the current version on git.

Hi Luiz,

I passed the -E and compiled and installed the latest git version of bluez

commit e81aeaea21db84042ee0c30159290ca56d250111
Author: Luiz Augusto von Dentz [off-list ref]
Date:   Wed Jan 6 12:20:45 2016 -0300

I installed d-feet to help me with the d-bus interfaces as I was struggling
with that.  With the -E option I now see 'GattManager1' pop up under
'/org/bluez/hci0'.

I guess I was expecting to see a 'GattService1' and 'GattCharacteristic1',
but I don't.

Hi Łukasz,

Thanks for the feedback!

Start discovery from org.bluez.Adapter1. After that find device object
of your device. Then connect to this device form org.bluez.Device1.
Once connected GattServices and GattCharacteristincs should be visible for you.

All this you can do with d-feet of course.

So, I tried your suggestions from within d-feet and made good progress, but
I don't think I am quite there yet.  Here is what I did inside d-feet:

Under /org/bluez/hci0 -> Interfaces -> org.bluez.Adapter1 -> Methods ->
StartDiscovery  --> double clicked and 'executed' this

Under /org/bluez/hci0/dev_XXXXX -> Interfaces -> org.bluez.Device1 ->
Methods -> Connect --> double clicked and 'executed' this

Under /org/bluez/hci0/dev_XXXX -> Interfaces ->
org.freedesktop.DBus.Properties -> GetAll ---> double clicked, entered
'"org.bluez.Device1"' and 'executed' this
    ---> received  valid UUIDs, GattServices, etc as output

Thank you!


I did _not_ see GattCharacteristic1 in the output, nor do I see either
GattService or GattCharacteristic1 show up as an interface in either
/org/bluez/hci0/dev_XXXXX or /org/bluez/hci0.


Did I miss a step or misunderstand your suggestion?


Cheers,
Don