Using Android to Communicate with a BLE HID Device

RE: Using Android to Communicate with a BLE HID Device

Sigurd — Mon, 13 May 2019 09:05:32 GMT

You can create your own app, but the HID keyboard service itself would need to be activated/connected in Android system settings -> Bluetooth.

As mentioned in the post I linked to earlier, "If you need to add some additional features to your keyboard, you have to use a different, custom service, that only your app will be able to understand. You may have HID and other services on one device. System will use the HID service, your app others."

RE: Using Android to Communicate with a BLE HID Device

bscdb — Fri, 10 May 2019 00:52:49 GMT

What if I create an app to convert Android phone into BLE HID device & it would be the central & it would communicate with peripheral BLE HID device. Is that even possible?

RE: Using Android to Communicate with a BLE HID Device

Sigurd — Tue, 07 May 2019 15:09:01 GMT

apk can be found here: https://github.com/NordicSemiconductor/Android-nRF-Connect/releases

I don't know if rooting the phones helps or not. Android apps are not supposed to access the HID characteristics...

RE: Using Android to Communicate with a BLE HID Device

bscdb — Tue, 07 May 2019 14:17:00 GMT

Also can you please provide .apk file of nrfconnect?

RE: Using Android to Communicate with a BLE HID Device

bscdb — Mon, 06 May 2019 00:32:55 GMT

Do you have a guide to do this?

RE: Using Android to Communicate with a BLE HID Device

Sigurd — Thu, 02 May 2019 07:20:10 GMT

[quote userid="73596" url="~/f/nordic-q-a/46686/using-android-to-communicate-with-a-ble-hid-device/184718"]So does it mean nrfconnect is a 3rd party app?[/quote]

Yes, that is correct. It's not an app that comes preinstalled in Android OS.

RE: Using Android to Communicate with a BLE HID Device

bscdb — Wed, 01 May 2019 18:49:05 GMT

So does it mean nrfconnect is a 3rd party app?

RE: Using Android to Communicate with a BLE HID Device

Sigurd — Wed, 01 May 2019 18:33:46 GMT

[quote user="bop123"]Ohh yes, the error was - "Exception occurred (BLUETOOTH_PRIVILEGED permission required)"[/quote]

This seems to be expected in this case. See this post for an explanation.

RE: Using Android to Communicate with a BLE HID Device

bscdb — Wed, 01 May 2019 15:08:07 GMT

Do I have to reinstall the nrfconnect as a root user on my phone??

RE: Using Android to Communicate with a BLE HID Device

bscdb — Wed, 01 May 2019 15:07:58 GMT

No that does not resolve the issue.

RE: Using Android to Communicate with a BLE HID Device

awneil — Wed, 01 May 2019 08:09:41 GMT

So does that resolve your issue?

If so, please verify the answer:

RE: Using Android to Communicate with a BLE HID Device

bscdb — Tue, 30 Apr 2019 17:19:03 GMT

Ohh yes, the error was - "Exception occurred (BLUETOOTH_PRIVILEGED permission required)"

RE: Using Android to Communicate with a BLE HID Device

Sigurd — Tue, 30 Apr 2019 13:25:10 GMT

Did you get any messages in the log when you tried to read/write the reports in nRF-Connect app(swipe from left to right in the nRFConnect app to bring up the log) ?

RE: Using Android to Communicate with a BLE HID Device

bscdb — Mon, 29 Apr 2019 18:36:45 GMT

Sorry I missed a word in my previous reply. After making the connection, I was 'NOT' able to read/write to reports.

I'm trying to develop an Android app to access input/output reports. My Android code connects to the nrf kit & recognizes the HID service UUID but then how do I read & write to reports?????

RE: Using Android to Communicate with a BLE HID Device

Sigurd — Mon, 29 Apr 2019 16:04:56 GMT

So it was a problem with one particular phone ?

If the connection kept dropping, it would be good idea to take a look at the log and the disconnect reason, swipe from left to right in the nRFConnect app to bring up the log. You should also inspect the log on the nRF52-side.

RE: Using Android to Communicate with a BLE HID Device

bscdb — Sat, 27 Apr 2019 21:29:00 GMT

I tried another phone & I could connect & bond. But I could read /write to reports!!