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???
01/20/06 14:06
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 		 #107884 - Sorry, I confused
Responding to: ???'s previous message
Mehdi said:
Yes,I send ack to the host after validating the request from memory

Sorry, I confused 'Acknowledge setup' and 'ACK' on the USB bus.
Considering inter packet delay, ACK will be automatically returned by the USB engine (SIE) on D12 just after reception of 'Setup-Data' packets.

Mehdi said:
Again,My problem is really this,I never receive any IN transaction from host

Send 'Acknowledge setup' and then write the first 8 bytes of the device descriptor to Control IN buffer. I suppose you'll get Control IN interrupt just after this packet is sent to the host. Until Control IN buffer is filled, D12 may be NAKing to IN transaction without issuing interrupt.

If you cannot get IN interrupt, some flags are missed to be set on the sequence before writing IN buffer.
For example,
- 'Acknowledge setup' command to both of Control OUT and Control IN EP?

Anyway, D12 datasheet has almost no description on how the USB engine behave. It is why we are wandering about...

Tsuneo

List of 88 messages in thread
TopicAuthorDate
USB Enumeration Process!!!            01/01/70 00:00      
   USB Design By Example            01/01/70 00:00      
      USB Design By Example            01/01/70 00:00      
         Hi.            01/01/70 00:00      
            Jan Axelson            01/01/70 00:00      
            Salaam            01/01/70 00:00      
               Salaam, Saalam and Thank you.            01/01/70 00:00      
                  fires            01/01/70 00:00      
                     It's out. All is well.            01/01/70 00:00      
                        weather            01/01/70 00:00      
                           Normal Weather            01/01/70 00:00      
                           good for you            01/01/70 00:00      
            D12!            01/01/70 00:00      
               Firmware Programming Guide for D12!            01/01/70 00:00      
                  I'll get back            01/01/70 00:00      
                     Thanks            01/01/70 00:00      
   I don't think you ever send descriptor .            01/01/70 00:00      
      Thanks            01/01/70 00:00      
         Descriptor IDs            01/01/70 00:00      
      But i think i must do!            01/01/70 00:00      
         Edit!            01/01/70 00:00      
            Main Loop            01/01/70 00:00      
               Try USB.org            01/01/70 00:00      
                  I don't know why d12 don't interrupted            01/01/70 00:00      
               I don't know why d12 don't interrupted            01/01/70 00:00      
                  I don't know why d12 don't interrupted            01/01/70 00:00      
                     I don't know why d12 don't interrupted            01/01/70 00:00      
                  Acknowledge setup?            01/01/70 00:00      
                     Thanks Tsuneo ,            01/01/70 00:00      
                        Sorry, I confused            01/01/70 00:00      
                           Sorry, I confused            01/01/70 00:00      
                              Just A Question!            01/01/70 00:00      
                                 It's OK, just for enumeration            01/01/70 00:00      
                                    Any error code on Control In EP?            01/01/70 00:00      
                                       Zero Length Packet !!!            01/01/70 00:00      
                                          ZLP??            01/01/70 00:00      
                                             ZLP??            01/01/70 00:00      
                                                ZLP itself is not the key            01/01/70 00:00      
                                                   the code to write the descriptor            01/01/70 00:00      
                                                      VALIDATE_BUFFER            01/01/70 00:00      
                                                         VALIDATE_BUFFER            01/01/70 00:00      
                                                            VALIDATE_BUFFER            01/01/70 00:00      
                                                               Not exactly            01/01/70 00:00      
                                                                  'Read buffer' and 'Write buffer'            01/01/70 00:00      
                                                                     'Read buffer' and 'Write buffer'            01/01/70 00:00      
                                                                        VALIDATE_BUFFER ?            01/01/70 00:00      
                                                                           VALIDATE_BUFFER ?            01/01/70 00:00      
                                                                              Your code            01/01/70 00:00      
                                                                                 Bulk Mail            01/01/70 00:00      
                                                                                    SEND_REQUESTED_DESCRIPTOR            01/01/70 00:00      
                                                                                       Incredible Progress            01/01/70 00:00      
                                                                                          ZLP on Control-IN            01/01/70 00:00      
                                                                                             Control IN and Control OUT transfer            01/01/70 00:00      
                                                                                                Thanks for your responses,            01/01/70 00:00      
                                                                                                   SET_ADDRESS            01/01/70 00:00      
                                                                                                      Some Questions...            01/01/70 00:00      
                                                                                                         SET_DESCRIPTOR            01/01/70 00:00      
                                                                                                            Control transfer            01/01/70 00:00      
                                                                                                               Control transfer            01/01/70 00:00      
                                                                                                                  the whole picture            01/01/70 00:00      
                                                                                                                     The Whole Picture,Thanks            01/01/70 00:00      
                                                                                                                        IN EP interrupt after sending packet            01/01/70 00:00      
                                                                                                                           Two USB communication procedure            01/01/70 00:00      
                                                                                                            comment...            01/01/70 00:00      
                                                                                             zlp!            01/01/70 00:00      
                                                                                             zlp!            01/01/70 00:00      
                                                         misunderstanding!            01/01/70 00:00      
   send an e-mail to your friendly local Ph            01/01/70 00:00      
   waiting for a techie, so I rummaged a bi            01/01/70 00:00      
   A Question?            01/01/70 00:00      
      declared in bMaxPacketSize            01/01/70 00:00      
   Source Code!            01/01/70 00:00      
      Source is Edited now!            01/01/70 00:00      
      Source is Edited!            01/01/70 00:00      
   D12 Example in "USB Design By Example"            01/01/70 00:00      
   Configuration Descriptor!            01/01/70 00:00      
      The 2nd Get_Descriptor            01/01/70 00:00      
         Thanks Tsuneo            01/01/70 00:00      
            Isn't it the config. desc. request?            01/01/70 00:00      
               Best For You Tsuneo !            01/01/70 00:00      
               Thanks            01/01/70 00:00      
      Strings            01/01/70 00:00      
         Thanks Thomas            01/01/70 00:00      
            Correction            01/01/70 00:00      
               USBView and UVCView            01/01/70 00:00      
               Thanks Thomas            01/01/70 00:00      
   Set DMA Mode!            01/01/70 00:00      
      It's optional            01/01/70 00:00      

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