[BRLTTY] BRLTTY disconnects a serial converter
Lars Bjørndal
lars at lamasti.net
Thu Mar 17 17:55:42 EDT 2022
Hi, list!
I need to use a serial converter to produce braille on an old embosser.
I'm using a Raspberry pi and a serial converter. If the converter is
connected at boot up; I get the following output from dmesg:
[ 20.964405] usbcore: registered new interface driver ftdi_sio
[ 20.964494] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 20.965023] ftdi_sio 1-1.1.3:1.0: FTDI USB Serial Device converter detected
[ 20.965241] usb 1-1.1.3: Detected FT232BM
[ 20.966606] usb 1-1.1.3: FTDI USB Serial Device converter now attached to ttyUSB0
...
[ 23.393568] usb 1-1.1.3: usbfs: interface 0 claimed by ftdi_sio while 'brltty' sets config #1
[ 23.400898] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[ 23.401068] ftdi_sio 1-1.1.3:1.0: device disconnected
The braille display is connected through bluetooth. Is this something
that can be solved from BRLTTYs side?
If I connect the converter after boot up, it sometimes works, and
sometimes leads to a system crash. If it works, and the braille display
goes into sleep mode, the converter disconnects again when the display
wakes up.
Thanks, Lars
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