Android, Ble and pairing

RE: Android, Ble and pairing

andres_mhp — Fri, 13 Apr 2018 12:29:51 GMT

Hi Aleksander Nowakowski thanks for the answer. We have been working with this solution.

RE: Android, Ble and pairing

andres_mhp — Fri, 13 Apr 2018 12:27:58 GMT

Hi.

After some research, when writing to characteristics the function is called with WRITE_TYPE_DEFAULT flag. The next state of the ble phone is busy, waiting for ack that never arrives, so the next characteristic write is never written.

Changing this flag to WRITE_TYPE_NO_RESPONSE, the state is not busy, and the process is done succesfully.

The thing does not end here. If we disable and enable again the Bluetooth, the phone never connects with hardware. I think, this behaviour can be related with the issue which is described in chapter 3 of this document because if bond is done programatically or manually, the phone can connect with hardware.

The question what we are asking now is. Where and how can be ACK done on hardware?

Thanks.

Andres.

RE: Android, Ble and pairing

Aleksander Nowakowski — Tue, 10 Apr 2018 12:01:29 GMT

Hi,

The device name is optional. If youryo using just works pairing then calling createBond(..) from the code should work without user interaction. On some phones a pop-up may be shown with a question, but this should work. On Lollipop+ devices.

RE: Android, Ble and pairing

ketil — Tue, 10 Apr 2018 11:48:34 GMT

Hi,

I have forwarded your question to our Android developers. Will get back to you with more information as soon as I can.

Ketil

RE: Android, Ble and pairing

andres_mhp — Tue, 10 Apr 2018 09:51:28 GMT

Hi again.

Our hardware device is advertising without name. Setting device name, in our case inside scan response, android app works.

Can this be related with our problem? Is device name necessary ?

Thanks again.