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???
09/22/05 12:37
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 		 #101376 - Filter driver
Responding to: ???'s previous message
"intercept/delay some of it"

This function is realized by a filter driver on PC. Filter driver intercepts URB (USB Request Block) from an user-provided device driver to Windows system driver (USBDI). Software USB monitor is a typical application of filter driver.

HHD USB Monitor http://www.hhdsoftware.com/usbmon.html
SnoopyPro http://sourceforge.net/projects/usbsnoop/

Filter driver is not so complicated as full spec device driver. As SnoopyPro is open source, it'll be a good start point for modification.

Tsuneo

List of 29 messages in thread
TopicAuthorDate
Need advice re. USB bridging project            01/01/70 00:00      
   Time for lots of research!            01/01/70 00:00      
      Ya think!?            01/01/70 00:00      
         What the PC does in USB            01/01/70 00:00      
            Massive            01/01/70 00:00      
   Not 8051?            01/01/70 00:00      
      Good question            01/01/70 00:00      
         Handshake?            01/01/70 00:00      
         The ARMs I know all have on-board debugg            01/01/70 00:00      
            The ARMs I know            01/01/70 00:00      
               --- especially in thumb mode :)            01/01/70 00:00      
            all ARMs            01/01/70 00:00      
               [OT] Are you sure?            01/01/70 00:00      
         Why not software solution?            01/01/70 00:00      
            My thoughts too            01/01/70 00:00      
               I have no idea since I have had others d            01/01/70 00:00      
                  "Hardware" and "Software" solution            01/01/70 00:00      
                     he wants USB in AND USB out            01/01/70 00:00      
                        Maybe he didn't think of it            01/01/70 00:00      
                           but is there one?            01/01/70 00:00      
                        A Software Wedge            01/01/70 00:00      
                           I think we need to wait for David            01/01/70 00:00      
                              Sorry to have been away, folks            01/01/70 00:00      
                                 that is your choice            01/01/70 00:00      
                                    You might also have to...            01/01/70 00:00      
      FYI: Philips Host+Device Chip            01/01/70 00:00      
   Filter driver            01/01/70 00:00      
   You need a USB master chip, no '51 is av            01/01/70 00:00      
   Need advice re. USB bridging project            01/01/70 00:00      

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