[BRLTTY] How do you connect to the APH Chameleon using Bluetooth on Android?

[Dave Mielke]

[quoted lines by Elijah Massey on 2022/04/16 at 02:14 -0700]

>I have a Fire HD 10 Plus running the latest version of Fire OS, based on Android 9, and I installed BRLTTY using the latest APK. I paired my APH Chameleon with the tablet, but when I select the tablet in the list of devices on the Chameleon, the braille display does not show anything and pressing keys does nothing. I tried adding the Chameleon in the BRLTTY device list using Bluetooth for the interface and leaving the driver set to autodetect, but even though it found the Bluetooth device, selecting the device in BRLTTY settings after I add it does not do anything either. 

Unfortunately, what you're observing is the way, for now, that it is. The issue is that HumanWare made the decision to use Bluetooth HID for all of its newer models but that Android, at least so far, doesn't allow apps to see a device's Bluetooth HID descriptors. I've asked Google to consider allowing this, and have also strongly suggested to HumanWare that they additionally support the older - RFCOMM - way of doing Bluetooth. So far, no results from either company.

Please note, however, that even if Google eventually does allow brltty to see the needed device data, it probably wouldn't help you because you're using a device based on Android 9 whereas, if Google does do it, it probably won't show up until at least Android 13. I wish, therefore, that HumanWare will eventually include support for the older way.

>I can connect it with USB, and when I select the display using the USB interface in the BRLTTY settings, it works just fine. 

Yes, USB should work just fine.

>VoiceView does not find the display when I try to pair a braille display in VoiceView settings, so I do not think that is interfering. 

I can't speak for VoiceView as I don't have any Fire OS devices.

-- 
I believe the Bible to be the very Word of God: http://Mielke.cc/bible/
Dave Mielke            | 2213 Fox Crescent | WebHome: http://Mielke.cc/
EMail: Dave at Mielke.cc  | Ottawa, Ontario   | Twitter: @Dave_Mielke
Phone: +1 613 726 0014 | Canada  K2A 1H7   |