[HOGP] Android auto-plays music when hogp devices disconnect

RE: [HOGP] Android auto-plays music when hogp devices disconnect

Håkon Alseth — Thu, 17 Dec 2015 14:40:07 GMT

I checked around internally, and we have not heard of this issue before (we have heard of auto-play on connect, but not on disconnect). If you provide a sniffer log when connecting to one of the phones that show the issue, I can see if this is an issue on the nRF-side or the android side.

RE: [HOGP] Android auto-plays music when hogp devices disconnect

knight — Wed, 16 Dec 2015 11:31:51 GMT

We test the descriptor with the following android device: [device]-----------[android version]--------[test result]

xiaomi 4 4.4.4 auto play on disconnection
huawei mate 7 4.4.4 auto play on disconnection
LG nexus5 6 play/pause usage is of no use
samsung s4 5.0.1 ok
iphone 4s/5/6/6s ok

We confirm that after removing "play" usage, everything goes fine.

PS. The "auto play on disconn" happens on the following situations.

Turn off bluetooth switch on android.
Remove power of ble peripheral.
Move peripheral out of ble connection range.

RE: [HOGP] Android auto-plays music when hogp devices disconnect

Håkon Alseth — Wed, 16 Dec 2015 10:19:46 GMT

Q1: Do you see this on all android phones? Could you add more details on the phone that you're testing with to your initial reply?

Q2: Could you provide a sniffer log of when the issue occurs?

Cheers,

RE: [HOGP] Android auto-plays music when hogp devices disconnect

knight — Wed, 16 Dec 2015 09:29:58 GMT

We try the "// Report ID 2: Advanced buttons" git code, stay the same problem. "play" and "pause" cause the problem.

RE: [HOGP] Android auto-plays music when hogp devices disconnect

knight — Wed, 16 Dec 2015 08:54:20 GMT

I can confirm that the problem is associated with "play" usage, after removing "play", android works fine.

RE: [HOGP] Android auto-plays music when hogp devices disconnect

knight — Wed, 16 Dec 2015 07:24:02 GMT

Hi Håkon, We must send 0x00 after every key event immediately, otherwise the android or IOS side would act abnormal behavior. For instance, the phone would be in the state of increasing volume infinitely after we send a volume key. IOS behaves normally in our case, only android goes wrong.

RE: [HOGP] Android auto-plays music when hogp devices disconnect

Håkon Alseth — Tue, 15 Dec 2015 10:28:28 GMT

When providing the descriptor with the "INPUT" bits that you have set (DATA, ARRAY, ABSOLUTE), are you also clearing the signal after sending a command?

Let's say that you send "PLAY", which boils down to 0x01 in this case, you will also have to send a release-key (0x00) afterwards.

By default on Android, command "PLAY" will start the music player.

Q1: Could you provide a sniffer trace showing the issue? You can capture this using our ble-sniffer

Q2: Do you see the same issue if you try disconnecting using this example? github.com/.../nrf51_ble_app_hids_kbd_consumercontrol

Cheers, Håkon