Le 15/03/2020 à 14:23, Chris Gorman via blfs-support a écrit :
> Hello,
>
> I am new to udev and am trying to get udev to make /dev/ttyUSB0 when a
> FTDI cable is plugged in. I get the following from dmesg when the
> cable is plugged in.
>
> [ 48.544775] usb 3-9.3: new full-speed USB device number 9 using xhci_hcd
> [ 48.645980] usb 3-9.3: New USB device found, idVendor=0403,
> idProduct=6001, bcdDevice= 6.00
> [ 48.645985] usb 3-9.3: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [ 48.645989] usb 3-9.3: Product: FT232R USB UART
> [ 48.645991] usb 3-9.3: Manufacturer: FTDI
> [ 48.645993] usb 3-9.3: SerialNumber: AL03O8V3
>
> Unfortunately no device node /dev/ttyUSB0 is created in /dev. On the
> same machine with ubuntu 18.04, I get a ttyUSB0 device node made in
> dev. I tried creating the following code in
> /etc/udev/rules.d/97-ftdi.rules
>
> SUBSYSTEM=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001",
> ATTRS{serial}=="AL03O8V3", MODE="0660", GROUP="dialout",
> SYMLINK+="test"
>
> This makes a test symlink but no /dev/ttyUSB0.
>
> I have also tried mknod /dev/ttyUSB0 c 188 0, which will create the
> file, but my terminal emulation software doesn't work with it. And it
> is deleted when I reboot.
>
> Looking for some ideas on how to get this cable working. Thanks in advance.
>
Missing driver?
Try plug in the cable, then run (as root) "lspci -v": that might have useful
information about a kernel driver.
Pierre
--
http://lists.linuxfromscratch.org/listinfo/blfs-support
FAQ: http://www.linuxfromscratch.org/blfs/faq.html
Unsubscribe: See the above information page
