LinuxQuestions.org - using vstusb to talk to a ocean optics usb spectrometer (its like a camera)

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using vstusb to talk to a ocean optics usb spectrometer (its like a camera)

Hello,
We're trying to use include/linux/usb/vstusb.h from the linux kernel (we're assuming its with the regular kernel https://git.kernel.org/?p=linux/kern...0c8f035737a5c3 ) on an ARM processor. We currently have a dev machine running Ubuntu however when we try to talk with the software all the usb devices disappear from a /sbin/lsusb

Anyway, my question is two pronged ..
1. Are we correct that the driver is part of the distributed kernel?
2. How do we talk over IOCTL or regular read()/write() methods to a USB device? (using vstusb)

We're hoping that we are not going to have to write a driver by hand as we struggling to figure out how to talk to USB devices easily

we have also looked into

Code:

http://qce-ga.sourceforge.net/

http://qce-ga.sourceforge.net/howto-usbid.html

http://hcgilje.wordpress.com/resources/xbee_arduino_code/

http://www.linuxjournal.com/article/4786

http://lwn.net/images/pdf/LDD3/ch13.pdf

http://stackoverflow.com/questions/117474/how-to-sniff-usb-port-under-windows

http://www.oceanoptics.com/products/omnidriver.asp

http://www.tech-pro.net/intro_usb.html

http://www.cs.indiana.edu/~bpisupat/work/usb.html

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cbc30118d7a376dab4113f299c0c8f035737a5c3

http://www.oceanoptics.com/technical/omnidriverinstall.pdf

https://www.kernel.org/doc/htmldocs/writing_usb_driver.html

http://cateee.net/lkddb/

http://www.linuxjournal.com/article/4786

http://cateee.net/lkddb/web-lkddb/USB_VST.html

http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/drivers/usb/misc/vstusb.c

ubuntu.wikimedia.org/git/ubuntu-jaunty/drivers/usb/misc/vstusb.c

How can we talk to this device, all we need is the basic functionality of grabbing the "picture". We're also going to run http://www.angstrom-distribution.org/

hope all is well (and Thank You)

Quote:

We're hoping that we are not going to have to write a driver by hand as we struggling to figure out how to talk to USB devices easily.

How can we talk to this device, all we need is the basic functionality of grabbing the "picture"

You should probably investigate how to implement udev (which responds to hotplug events in re USB devices) with the ARM processor. I'd suggest a web search for "arm processor usb udev" and start reading. I'm not a programmer, so I can't say than anything I found in my search would be useful to you.

Did you find a solution -- I would be able to provide one based on libusb

Hi,

I have drivers for spectrometers of two companies (Avantes and Hamamatsu) and a python programme which adresses OOptics spectrometers via libusb.

If you are interested plese contact me. I'm also working (in the (very) long run) to write a kernel driver for the OOptics spectrometers. USB2000 should work, USB 4000 are working. If you have a 'Red Tide' then this 'driver' will not work ...

Carsten

Carsten, how about your progress with Ocean Optics driver or libusb code?
It would be very nice if you share it :)

Quote:

Originally Posted by styx_ (Post 5041458)

Carsten, how about your progress with Ocean Optics driver or libusb code?
It would be very nice if you share it :)

I am sorry it took some time ... here you go:

Sourceforge site

While the documentation is not extremely excessive at the moment (nearer to nonexistant) the python modules are more or less well commented. Please note that I do not have a kernel module for the OceanOptics spectrometers (due to lazyness and well I was annoyed by their Win-Software some time ago so I circumvented this company as long as I could) so there is only libusb access. In exchange the Avantes libusb module did not work at all so there is only the kernel module.
If you go for the Hamamtsu spectrometer you actually have the choice. The Hamamatsu python module in combination with the kernel module was tested very much as we had a scientific instrument running on it for some time.

I am sure that there will be questions about the usage so I would ask you to use the sourceforge wiki thing to ask the questions.

Carsten