USB host controller BULK Transfer problem.

Hi all,

I am gopu, new to this group. I am trying to write driver code for usb
host controller 1.1 . I hv done enumeration successfully. Now i am trying
to send a REQUEST_SENSE SCSI command. I am able to send the CBW but I am not
able get the reply and CSW. Host controller is not processing the in-endpoint
to get the data and status. Plz help me.

I declared two endpoints and configure ep1 for BULK-OUT and ep2 for BULK-IN.
I assigned BULK-OUT as head pionter in the BULK HEAD Register and pointed
the next of ep1 to ep2.
Now Host controller is processing my ep1 but not my ep2. If i confugre ep2
for an invalid endpoint address, i get DEVICE NOT RESPONDING error but for
the proper address host controller is not processing it. Am i missing
anything ? Plz help me.



I hv posted this same question in two other places of this forum. I am
extremly sorry for that, I am not able to delete them . I think this is
the right place to post this question.

Thanks in advance,
Gopu.S