On Thursday, June 12, 2014 at 07:42:55 PM, Stephen Warren wrote: > On 06/12/2014 11:30 AM, Marek Vasut wrote: > > On Thursday, June 12, 2014 at 05:55:40 PM, Stephen Warren wrote: > > [...] > > > >>>> I'm slightly confused by this log. Do you have 2 boards running > >>>> U-Boot, one running the USB controller in device mode, and this is > >>>> the log from some other board that's talking to that first board? > >>> > >>> I have one board connect to a PC. The log shows two different errors > >>> happening on the board. The first log shows a tftp command on the board > >>> stopping with a timeout after receiving some packets. The second log > >>> shows a tftp command on the same board throwing an error before > >>> receiving any packet. > >> > >> So U-Boot is running on the board, and the logs are from the board, i.e. > >> you're running the "tftp" command in U-Boot on the board? > >> > >> If so, I'm confused how ci_udc comes into play at all; doesn't "tftp" > >> use the USB controller in host mode, whereas ci_udc is only used for > >> device mode? > > > > U-Boot CDC ethernet support, that's pretty normal mode of operation ;-) > > Oh, so that makes U-Boot into a kind of virtual NIC where the packets > don't go anywhere but U-Boot's internal network stack, and that feature > runs in the background with the interactive shell still fully operation > then?
Nah, it runs in the foreground. I think I wrote some short howto on this when I initially wanted to boast about it [1]. [1] http://www.denx-cs.de/?q=blogm28singlewiredebug > All the USB device mode support I've used is a synchronous/blocking > shell command (dfu, ums) rather than something that runs in the > background, so I figured CDC Ethernet would work the same. It's sync, blocking :) > Perhaps I should try and get CDC Ethernet working... Can both > CONFIG_USB_GADGET and CONFIG_USB_ETHER co-exist I wonder? Actually, > U-Boot acting as a USB serial port running at the same time as dfu or > ums would be more useful to me. Check the link ;-) Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
