Hi,
after connecting this QR reader I see a new /dev/ttyU but as soon as I try tip,
the device disconnects. (BTW, it’s configured as a ‘Virtual Serial Port’)
dmsg:
…
Jan 2 10:54:57 pampero kernel: umodem0 on uhub1
Jan 2 10:54:57 pampero kernel: umodem0: <SM SM-2D PRODUCT USB UART, class 2/0,
rev 1.10/1.00, addr 38> on usbus0
Jan 2 10:54:57 pampero kernel: umodem0: data interface 1, has no CM over data,
has no break
Jan 2 10:56:01 pampero kernel: umodem0: at uhub1, port 2, addr 38
(disconnected)
Jan 2 10:56:02 pampero kernel: umodem0:
Jan 2 10:56:02 pampero kernel: detached
Jan 2 10:56:03 pampero kernel: umodem0 on uhub1
Jan 2 10:56:03 pampero kernel: umodem0: <SM SM-2D PRODUCT USB UART, class 2/0,
rev 1.10/1.00, addr 38> on usbus0
Jan 2 10:56:03 pampero kernel: umodem0: data interface 1, has no CM over data,
has no break
…
and usbconfig:
pampero# usbconfig
ugen0.1: <0x8086 XHCI root HUB> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps)
pwr=SAVE (0mA)
ugen0.2: <GenesysLogic USB2.0 Hub> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps)
pwr=SAVE (500mA)
ugen0.4: <Logitech USB Receiver> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps)
pwr=ON (98mA)
ugen0.5: <Prolific Technology Inc. USB-Serial Controller> at usbus0, cfg=0
md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.6: <GenesysLogic USB3.0 Hub> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps)
pwr=SAVE (0mA)
ugen0.3: <Silicon Labs CP2102 USB to UART Bridge Controller> at usbus0, cfg=0
md=HOST spd=FULL (12Mbps) pwr=ON (100mA)
ugen0.7: <SM SM-2D PRODUCT USB UART> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps)
pwr=ON (100mA) <— this is the QR
any ideas?
thanks,
danny
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