-----Original Message----- From: David Brownell To: Christopher Li Cc: Oliver Neukum; '[EMAIL PROTECTED]' Sent: 2/5/03 8:59 PM Subject: Re: [linux-usb-devel] usbdevfs setup URB buffer size limit No ...
>Toggle on control endpoints must reset at the beginning of >each transaction Agree. >and you're saying to use whatever the last >transaction left lying around. >You can use TD_T_TOGGLE on all but the first TD, but for that >first one you need to forcibly reset it. I am a little bit confused. I think the beginning of the transaction is that 8 byte setup TD, which already reset to DATA0. The (optional) follow up data TD start at the second TD, (if any). Since they are pointed by the same ED, I guess the data TD should be able to using toggle bit, which was reseted by the first setup TD? Should I force to reset the first data TD (which is the second TD in the whole transaction) to use DATA1 then do toggle for the rest of data TD? I am sorry I don't know enough about OHCI. Just try to help. Let me know how to do it right, I will be glad to correct it. Thanks Chris ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
