[BRLTTY] Focus 1 70 display and USB to serial adapter: possible connecting this scenario?

Sat Dec 21 15:57:12 UTC 2024

I think with Bookworm you should have BRLTTY 6.7.  I have the following line in the brltty.conf.
braile-device ttyUSB0
This works for Alva connected to a USB serial converter.

________________________________
From: BRLTTY <brltty-bounces at brltty.app> on behalf of Hammer Attila <hammera at pickup.hu>
Sent: Saturday, December 21, 2024 9:49 AM
To: Informal discussion between users and developers of BRLTTY. <brltty at brltty.app>
Subject: [BRLTTY] Focus 1 70 display and USB to serial adapter: possible connecting this scenario?

Dear List,

Unfortunatelly, possible my old Alva display are defected, so I tryed my another home have Focus 1 70 display.

Normal serial cable and normal serial 9 pin port the display work, but my second machine not have a general serial pin cable hardvare connector, so I buied a Genbird USB to serial 9 pin cable.

Both Ubuntu 20.04 and Debian 12 are correct detected my usb to serial cable, and created correct the /dev/ttyACM0 device.

In /etc/brltty.conf file I set braille driver related config key, and added following line into the config file:

braille-device    serial:ttyACM0    # First serial device.

Because the display shows only the focus 70 related status message and not the actual braille output, I restarted BRLTTY with sudo brltty -d /dev/ttyACM0 and -D fs command, and used the -L option.

I translated the possible relevant log file entries from hungarian to english with Google translator, but I don't what means the missing libraryes related error messages, and how possible correcting these issues.

The log file is created In Ubuntu 20.04 Mate edition, with Brltty 6.5 revision.

If need, I have possibility to create a log file my test machine the Debian 12 Bookworm release, I not remember BRLTTY come my system from the backport repo or not.

Log file says following:

2024-12-21 at 15:18:38.446<mailto:2024-12-21 at 15:18:38.446> [brltty] BRLTTY 6.5 rev BRLTTY-6.5 [https://brltty.app/]
2024-12-21 at 15:18:38.447<mailto:2024-12-21 at 15:18:38.447> [brltty] executing as the invoking user: root
2024-12-21 at 15:18:38.953<mailto:2024-12-21 at 15:18:38.953> [brltty] BrlAPI Server: release 0.8.4
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] fs/libbrlttyxlx.so: cannot open shared object file: No such file or directory
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] cannot load screen driver: fs/libbrlttyxlx.so
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] screen driver not loadable: lx
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] fs/libbrlttybfs.so: cannot open shared object file: No such file or directory
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] cannot load braille driver: fs/libbrlttybfs.so
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] braille driver not loadable: fs
2024-12-21 at 15:18:38.954<mailto:2024-12-21 at 15:18:38.954> [brltty] Speech Driver: no [NoSpeech]
2024-12-21 at 15:18:38.956<mailto:2024-12-21 at 15:18:38.956> [server-main] another BrlAPI server is already listening on 0 (file /var/lib/BrlAPI/.0 exists)
2024-12-21 at 15:18:38.956<mailto:2024-12-21 at 15:18:38.956> [server-main] error while creating socket 0

I forgot any grouping adding command, or set different the permissions if need use a braille display with an usb to serial cable?

Since eleven years I use my previous display with USB cable.

If anybody have any useful idea, please tell a hint if have a little time.

Kind regards,

Attila
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