Re: [micro-manager-general] CoolLed PrecisExcite in Linux

[Gordon S. <Gor...@ci...>]

Hi Guys,
 

> -----Original Message-----
> From: Nico Stuurman [mailto:ni...@cm...] 
> Sent: 24 August 2009 21:04
> To: Micro-Manager General
> Subject: Re: [micro-manager-general] CoolLed PrecisExcite in Linux
> 
> Hi Martin,
> 
> > When I try to add the precisExcite DeviceAdapter to an existing
> > setup I can only choose /dev/ttyS0 as Port. However that is where
> > the Microscope Body is connected.
> 
> > So I guess I need some Linux kernel module that will expose the
> > connected USB device as a serial port. I tried 'modprobe usbserial'.
> 
> Indeed.  From your lsusb output, it appears that this is a CDC  
> device.

Yes, it's a CDC/ACM device "virtual serial port".

> I do think that the usbserial driver should be able to talk  
> to this device (although there might be a requirement for a cdc_atm  
> driver).  However, MicroManager only looks for serial ports with a  
> name starting with "ttyS" or ttyUSB".  It is possible that this port  
> appears under another name on your system.  If you can figure 
> out what  
> that name is, then we can add it to the code recognizing valid ports  
> in the SerialManagerUnix adapter.

On only one of the few occasions I've tried a precisExcite on Linux was
I unable to find what device name one should use. I think it may well
very from Linux system to Linux system.

I've seen:
/dev/usb/ttyACM0	etc.	<-- seems to be the 'preferred' name
/dev/ttyUSB0	etc.
/dev/usb/acm/0	etc.
/dev/acm/ttyACM0	etc.
/dev/usb/acm0	etc.
/dev/ttyUSB0	etc.
/dev/ttyGS0		etc.	("Gadget Serial Driver" apparently, or
"Generic"?)

The appropriate module appears to be cdc-acm.o or cdc-acm.ko, though
I've also seen ACM.o mentioned.

Huge fan though I am of Linux, this level of confusion is a maintenance
nightmare and does it no favours. I'm afraid that I walked from this
particular issue.  If I get some time, I _will_ walk back again. 

> It might also be worth to ask PrecisExcite about connections 
> to their device under Linux.

If it helps, as an alternative interface, TCP/IP works fine and I guess
MM will interface that way.

Kind regards,
		  Gordon.

-- 
Gordon Scott  Design Engineering
	    Custom Interconnect Ltd.   http://www.cil-uk.co.uk
	    CoolLED                    http://www.coolled.com
	    Phone +44-1264-321321
	    CIL House, Charlton Road, Andover SP10 3JL, UK


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