- From: Holger Jakob <jakob_at_ph1.uni-koeln.de>
- Date: Tue, 28 Sep 2004 16:56:34 +0200
On Tuesday 28 September 2004 16:27, Joachim Wuttke wrote: > Hi, David, Frank, and others, Hi Joachim, I posted the following message a while ago: Hello Everyone, I have a Digital I/O device that uses a 82C55 internally and is connected by USB. There is no documentation or development kit available for linux, and the vendor (Personal Measurement Device) said that some linux group is working on a driver that is not released yet. So I decided to write a linux driver on my own. The protocol used for communication via USB is quite simple (actually I monitored the USB transfer of the device with a Windows tool). So, at the present stage I have a small example program that allows me to read and write the ports. There is a 32-bit counter as well. To access USB, I use libusb. However, the device seems to be a USB-HID device, and is thus claimed by the usbhid-module. I think this is supposed to be a much easier way to access the device, but I was unable to get anything useful out of /dev/usb/hiddev0. I would like to see this device supported by comedi, so I want to ask here, I there is any interest to have this device supported? Because I am no expert to the comedi-intera I would also like to know if and how USB devices are supported by comedi? Regards, Holger Because I would prefer to have a user-space only driver a comedi driver (including a kernel-module) would probably need much more work than a simple non-comedi user-level library. The alternative libhid has recently made some progress as well, but I have no information on the status and how well this lib works with PMDs. Are you interested in my (example) code for the PMD 1024LS? A step forward would be if someone could write small interface functions for the device. Regards, Holger > after two years off the list I am back with a data acquisistion > question: Do you support the USB devices by Measurement Computing > (http://www.measurementcomputing.com/usb.html) ? > > Regards, Joachim > > _________________________________________________________ > Mit WEB.DE FreePhone® mit höchster Qualität ab 0 Ct./Min. > weltweit telefonieren! http://freephone.web.de/?mc=021201 > > > _______________________________________________ > comedi mailing list > comedi_at_comedi.org > https://cvs.comedi.org/cgi-bin/mailman/listinfo/comedi
Received on 2004-09-28Z13:56:34