HID get report from a mac not as expected

[yiancar]

Hello again, This time I am trying to read HID reports using bluetooth to get the state of the caps lock. I know this should be super simple and its explained in the hid keyboard peripheral example using ble_hids_outp_rep_get. I am using a mac as a test machine and the report never becomes 0x02 (caps enabled).

Sadly I am unable to test it either using nRF connect due to the following: ˇgithub.com/.../4

Can anyone confirm that this is the case and if so, assuming it works on windows, explain why mac behaves this way?

Thank you, Yiangos

[Sigurd]

Hi,

I have tested this on a MacBook Air, and I'm seeing the same issue here, the caps-lock state is not reported back to the nRF5x-DK. I also tested this on a Windows 8 laptop, but it worked 100% fine on the Windows laptop. So this is a issue with the Mac. I will look for more information about why the mac behaves this way.

[yiancar]

Thank you for having a look Sigurd. As you may understand I am trying to develop a bluetooth keyboard. I could just check for when the capslock key is pressed to turn on the led but this wouldnt be in sync with the actual OS. As a worst case scenario maybe somehow I can detect if its connected to mac or windows and act accordingly?

[Sigurd]

What version of macOS did you try with? I tested with macOS version 10.12.6 here.

According to the BLE-HID spec, the mac should have sent a Output report containing the Caps lock state, both when the state changes and when you reconnect/connect. It did some sniffer tests, but did not see any on-air packets for the CAPS-lock state being sent unfortunately.

[yiancar]

Yes same 10.12.6. Is there any dev way to contact Apple perhaps? Also as a work around, I imagine there is no way to tell that its an apple device that the keyboard has connected to (from the nordic side of thinks)

[yiancar]

bump, Anyone had a look at this?