Le 15/03/2020 à 14:50, Pierre Labastie via blfs-support a écrit :
> 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.
>
Hmmm, not sure lspci is the best tool, but lsusb does not seem to give the
driver name...
You might want to add (if not already done):
Device Drivers --->
[*] USB support --->
<M/*> USB Serial Converter support --->
<M/*> USB FTDI Single Port Serial Driver
HTH
Pierre
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