[BRLTTY] Brltty beep on android

Dave Mielke Dave at mielke.cc
Thu Jul 19 04:22:11 EDT 2018


It looks like you aren't using the latest brltty apk. That may mean that many
problems have been resolved since the one you're using. Perhaps you should
upgrade.



You're getting this log once in a while:

   checkTalkbackEnable : false, accesibilityService : org.a11y.brltty.android/org.a11y.brltty.android.BrailleService

While it's harmless enough, brltty, at least for now, works better when
TalkBack is enabled. The reason is that brltty uses the Accessibility Focus
feature, which, unfortunately, isn't implemented as a standalone capability.
It's part of Explore By Touch, which, in turn, is paty of TalkBack.

I know of one user who has solved this problem by installing a null TTS. So,
even though TalkBack is active, nothing is spoken. I forget it's exact name at
the moment, but searching the store for something like null tts should find it.

The first part of your log contains these logs:

   malloc error 11: Try again.
   malloc error 5: I/O error.

Whenever either of these occurs, it's imediately followed by this one:

   Bluetooth connect failed: B8:27:EB:BB:3C:85: Bluetooth is off

When Bluetooth is finally on, you get this pair of logs:

   Bluetooth connect failed: B8:27:EB:BB:3C:85: bt socket connect failed
   Bluetooth connect failed: B8:27:EB:BB:3C:85: read failed, socket might closed or timeout, read ret: -1

These are okay. They just mean that brltty couldn't connect to the braille
device. The Java Exception for this case isn't specific enough for brltty to
know the precise cause of the connection failure.

Now to your beep issue. I think it's caused by this:

   unhandled command: 00FF

Brltty does beep when it receives a command from the braille driver that it
doesn't recognize.

You're also getting these:

   Unexpected Packet: 04 00 80 00 FF 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 0B 1A 1B 1C 1D 20 82

Since I believe this is your own protocol, I'm not sure how significant they
are.

-- 
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Dave Mielke            | 2213 Fox Crescent | WebHome: http://Mielke.cc/
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