RE: Problem with Newport CONEX-AGAP FTDI device on Linux

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

Folks,

 

Thanks for the quick replies.  The problem is that CONEX-AGP is known to the RHEL9 Linux kernel, but the CONEX-AGAP is not.

 

I was able to get it working by running these commands:

 

modprobe ftdi_sio

echo 104d 3008 > /sys/bus/usb-serial/drivers/ftdi_sio/newid

 

When I plugged in the CONEG-AGAP /dev/ttyUSB0 was created.  When I plugged in a second CONEX-AGAP /dev/ttyUSB1 was created.

 

However, that solution is temporary and does not survive a reboot.

 

The permanent solution was to create these 2 files:

• /etc/modules-load.d/ftdi_sio.conf containing the following single line:

ftdi_sio

• /etc/udev/rules.d /99-conex-agap.rules containing these 2 lines:

ACTION="" ATTRS{idVendor}=="104d", ATTRS{idProduct}=="3008", RUN+="/bin/sh -c 'echo 104d 3008 > /sys/bus/usb-serial/drivers/ftdi_sio/new_id'"

SUBSYSTEM=="tty", ATTRS{idVendor}=="104d", ATTRS{idProduct}=="3008", SYMLINK+="conex_agap", MODE="0666"

 

Thanks again,

Mark

 

 

From: James P. Withrow <jwithrow at cornell.edu>
Sent: Friday, June 20, 2025 12:19 PM
To: Mark Rivers <rivers at cars.uchicago.edu>
Cc: tech-talk EPICS <tech-talk at aps.anl.gov>
Subject: Re: Problem with Newport CONEX-AGAP FTDI device on Linux

 

Mark -

 

It looks like the issue may be that the VID/PID pair (particularly the PID) may not be included in the currently running ftdi_sio driver. 

 

A quick Google search turned up this incantation, which may be helpful:

 

echo "<VID> <PID>" >  /sys/bus/usb-serial/drivers/ftdi_sio/new_id

Untested, as I’m out of the office, but hopefully this may point you in the correct direction.

-Jim Withrow 

Sent from my iPhone

On Jun 20, 2025, at 11:52, Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> wrote:

62363.524320] usb 1-4: new full-speed USB device number 11 using xhci_hcd

[62363.655966] usb 1-4: New USB device found, idVendor=104d, idProduct=3008, bcdDevice= 6.00

[62363.655975] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[62363.655978] usb 1-4: Product: CONEX-AGAP

[62363.655980] usb 1-4: Manufacturer: Newport

[62363.655982] usb 1-4: SerialNumber: A694ND5H