Messages in this thread | | | Date | Mon, 31 Mar 2003 11:55:32 -0800 | From | David Brownell <> | Subject | Re: netchip's net2280 usb 2.0 device |
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David Brownell wrote: > Hi, > >> We have been using the net2280 chip (usb 2.0) as a usb target >> printer device. We have been seeing data corruption problems >> during a bulk out transfer when data is taken out the device >> quite slow. The corruption size is only 4 bytes suggesting >> a device problem. Is anyone using this chip and has anyone >> encountered similar problem? > > > I've certainly been using it ... there's a Linux driver for it, > part of a "USB Gadget" framework that could support other such > "target mode" hardware, at http://kernel.bkbits.net/~david-b > for general use. (Download from BK, the 2.5.64 patch doesn't > include the net2280 driver and there's no 2.4 patch yet. I'll > send out an announcement soon, when I update the patches.)
Just done. There are now patches for 2.4 and 2.5 kernels.
> I haven't run into that particular problem, but it sounds > like it might be a known erratum ... have you asked NetChip, or > checked the 14-March errata at their website? They've been > pretty responsive to my questions.
I have in mind particularly erratum 0106 ... which might have been what was making my TTCP testing from working. Well, at least the latest code for that is now behaving.
- Dave
>> Is there any other 2.0 usb chip that can be used as a target mode >> device? > > > The net2280 is the only such chip I know of that talks PCI > directly. So it's particularly Linux-friendly: it doesn't > need special bus adapter hardware. > > - Dave > >
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