Neil, SUMMARY: Please create a simple generic solution to write to Interrupt-Out endpoints.
DETAILS: I have a device that needs Interrupt-Out support. It is an analog/digital data capture card from Ontrak Control Systems, called an ADU200. (others on the list may recall that in February I asked for help... thanks again) As you noted, tThe usb_serial.c functions seem to mash USB functionality into a tty model. (square peg - round hole). Yes it can be done, but all my device does is write and read 8 byte packets on the Interrupt Out endpoint. So I passed over the USB serial model. I satisfied my Interrupt-Out requirement by creating a function called usb_int_msg. I cloned the usb_bulk_msg function in drivers/usb/core/message.c and made the obvious changes to support an Interrupt-Out endpoint. This was a simple, small-footprint change that did the trick for me. I tested the change on 2.6.0-test6, 2.6.0-test8 and 2.6.0-test9. (note: this is on a uniprocessor system so races are minimized) However, I now have a driver that requires custom kernel builds to install. Plus my crude solution is likely to transgress some unknown rule somewhere in the USB core. I would prefer to use standard generic functions from accepted kernel routines. It would be ideal if you could structure your solution so that the low-level functionality was available outside your custom driver. (specifically a function to write to the Interrupt Out endpoint) I will then change my driver to utilize your generic function. In the past other people were interested in Interrupt Out endpoints. Specifically for Labjack interface boards and for Evolution Robots. I do not know how the others solved their Interrupt Out needs. Bye, John Homppi ---------- From: Neil Whelchel Sent: Friday, November 07, 2003 6:30 PM To: [EMAIL PROTECTED] Subject: [linux-usb-devel] Class or not to class... Hello, I am working on a driver for a USB I/O box (it is a little plastic box with a USB port on one side and screw terminals on the other that are general purpose digital input/output) and I have ran into a design philosophy problem, so I thought that I would post my thoughts for discussion, maybe start an all out war... ;) <<<<<< SNIP >>>>>>>> Any thoughts? -Neil Whelchel- First Light Internet Services 760 366-0145 - We don't do Window$, that's what the janitor is for - ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
