Date: Thu, 14 Dec 2023 12:18:27 +0100 From: Milan Obuch <freebsd-usb@dino.sk> To: freebsd-usb@freebsd.org Subject: USB bar code reader 'detached' usage? Message-ID: <20231214121827.6133f219@zeta.dino.sk>
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Hi, I am working on a project using bar code reader. When plugged into USB port, it is recognised as USB keyboard, as illustrated by following snipped from console log: ugen0.8: <OKE Electron Company OKE PS2-USB V1.61> at usbus0 ukbd1 on uhub8 ukbd1: <OKE Electron Company OKE PS2-USB V1.61, class 0/0, rev 1.10/0.01, a= ddr 8> on usbus0=20 kbd3 at ukbd1 When I scan some barcode with it, raw keyboard codes are sent into system keyboard. It just works as usual USB keyboard. This has some problems. First an annoyance - slovak keyboard layout traditionally shifts numbers to uppercase. So with this layout, instead of numbers 123 I an getting +=C4=BE=C5=A1 - while it works as intended, the result is not right. This is not a big problem for my project, it does not use system keyboard in its intended setup, communication is done via touch screen, so I can just switch keyboard layout to English, but it is a hack I'd like to avoid. I'd like detach bar code reader from system keyboard (kbdmux), and somehow read the complete bar code when detected, maybe as some kind of event delivered to my program. Did anybody encounter similar situation? Anybody working with USB bar code readers who can share some experiences? Regards, Milan
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