[BRLTTY] Humanware driver and USB HID

[Justin Pospical]

Hello,

I have an APH Chameleon 20 (which I believe is actually a rebranded Brailliant BI20x) that uses the Humanware driver. I read the recent discussion about the Mantis (same driver/protocol) so am aware bluetooth HID is not currently supported and the display therefore won't work using bluetooth. I've tried connecting via USB, and that also does not seem to work; brltty starts via the udev rule, but I get no output. The following is logged repeatedly after connecting:

Mar 04 14:21:02 p1 brltty[402]: USB configuration set error 16: Device or resource busy
Mar 04 13:59:52 p1 brltty[384]: USB: endpoint descriptor not found: 84

As well as the following entries in dmesg:

[   63.245793] usb 1-1.3: reset high-speed USB device number 5 using dwc_otg
[   63.380835] usb 1-1.3: usbfs: interface 0 claimed by usbhid while 'brltty' sets config #1

I'm unsure how relevant these messages are, because I know I've seen the kernel one about usbhid with my Hims Braille Sense, which does work. So I'm curious, is communication with this display over USB also not yet implemented, or is something else wrong?

Justin