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

[Dave Mielke]

[quoted lines by Hammer Attila on 2024/12/21 at 15:49 +0100]

>so I buied a Genbird USB to serial 9 pin cable.

That should work.

>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.

Yes, that's correct.

>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, 

-D (uppercase D) is the wrong option. It tells brltty where to find the drivers, and I think that's what your problem is. To tell brltty which braille driver to use, please specify the -b (lowercase b) option.

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