Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Thu, 18 Apr 2013 22:07:37 +0000

Yes, it does work for me to use modprobe with the 3006 device.  I can use either the 3000 or 3006, but not both at the same time.

But if he wanted to use a mix of the 3000 and 3006 devices it would not work?

Mark

________________________________________
From: J. Lewis Muir [[email protected]]
Sent: Thursday, April 18, 2013 5:00 PM
To: Mark Rivers
Cc: Jennings Guy; [email protected] Talk; Andrew Gomella
Subject: Re: Linux USB serial questions

On 4/18/13 4:41 PM, Mark Rivers wrote:
> I don't have a serious need for this device, but there is an EPICS user at NIH, Andrew Gomella who needs to control 18 of the model 3006 devices, which he is planning to do from a single Linux box.
>
> Is this possible, even in kernel 3.8?

Hi, Mark.

I think it would work, maybe even in an older kernel, assuming the
ftdi_sio module knows about the chip type of the device, and all 18
devices have product ID 0x3006, and they are the only devices for which
the ftdi_sio module will be used that it doesn't know about (due to the
limitation of only being able to specify one vendor-product modprobe
parameter pair which will have to be set to "vendor=0x104d product=0x3006").

The device with product ID 0x3006 works for you in your Fedora 2.6.35
kernel by specifying the "vendor=0x104d product=0x3006" modprobe
parameters, right?  So then the only question would be whether it would
correctly add the additional /dev/ttyUSB* device files, which I think it
would, given Guy's explanation of what's going wrong.

Lewis

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System