Hi Stefan, Also in the SETUP stage where I have set my packet size as 1, as I treat each of this 3 stages (SETUP, DATA and STATUS) as three different stages/transactions, I find that the "Non-Periodic Transmit FIFO/Queue Status Register" read as soon as I write to the "Non-Periodic Transmit FIFO Size Register" as "0x10500fa". Before writing the value is "0x80100". Is it fine that the bit 7 which defines the termination of channel a right thing to happen? Secondly since i am writing 2 bytes to the FIFO why should the "Non-periodic TxFIFO Space Avail (NPTxFSpcAvail)" bits of USB0_GNPTXSTS be 0xfa?
The FIFO to which I write: *USB0_GRXFSIZ - 0x213 USB0_GNPTXFSIZ - 0x1000213* The above setting mean that my Non-Periodic Transmit register starts at 0x213. So I write my data (8 byte SETUP Token Data) in the following way: - Write the first 4 bytes to the starting adress of 0x1000 since I am using Channel 0 --- (*(volatile unsigned *)(DHc->base + 0x1000 + (bEnd * 0x1000) + 0x213 + fifo_address_offset))=*((volatile unsigned *)pSrcBuf); - Then increment the "fifo_adress_offset" by 4 and write the next 4 bytes. I think that there is some problem in the SETUP (Token) Stage. Can you please pass any pointers over this? Regards; Aadish On Wed, Feb 25, 2009 at 6:09 PM, Adish Kuvelker <adish.kuvel...@gmail.com>wrote: > Hi Stefan, > > I am working on the internal OTG controller. The synopsys DWC. > > Regards; > Aadish > > > On Wed, Feb 25, 2009 at 5:57 PM, Stefan Roese <s...@denx.de> wrote: > >> On Wednesday 25 February 2009, Adish Kuvelker wrote: >> > I am developing a Host Controller Driver for the PPC405EX based board. I >> > have a OTG controller on it, which I have to configure as Host >> Controller >> > and thus I am witting a HCD for the same. I am stuck at the Control >> stage >> > wherein although my SETUP stage seems to be going through I get a STALL. >> > >> > Can anyone help me in this regard as to where would I get a reference >> code >> > for this? >> >> Are you talking about the 405EX internal USB OTG controller (Synopsys DWC) >> or >> some other OTG controller? >> >> Best regards, >> Stefan >> > >
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