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HOW TO Clear STALL condition?
by Unknown on May 5, 2004 |
Not available! | ||
|
Hello all,
can some one give me the microsoft enumeration sequence ?
Thankyou
ravi
----- Original Message -----
From: Jeff Lin jlin87@y...>
To: usb@o..., midas@j...
Date: Wed, 12 Nov 2003 15:01:29 -0800 (PST)
Subject: Re: [usb] HOW TO Clear STALL condition?
Here you are setting 2B wIndex = 0x8200. That could be the source
of probelm.
According to spec, you will need to set wIndex tto EP for clear
feature of EPs.
You may want to try with wIndex = 2, the EP#, i.e.
Setup,payload(0x02,0x01,00,00, 00, 02, 00,00),In,
Do update.
midas@j... wrote:
i have already tried your method, but still fail.
following is my messages:
CLEAR_FEATURE sequence:
Setup,payload(0x02,0x01,00,00,0x82,00,00,00),In,
endpoint 0x02 ,address 0x08(my define)
but it still gets "STALL".
Is my method wrong? Or should I use other commands?
Thanks a lot.
----- Original Message -----
From: "Gayathri Seshadri"
To:
Date: Fri, 3 Oct 2003 09:38:18 +0530
Subject: Re: [usb] HOW TO Clear STALL condition?
>
> > Hi, > > As far as my experience with the USB mass storage protocol, i would
> suggest you to do a clear feature endpoint stall to the IN
endpoint
> of the
> bulk type. Normally the cbw suggests the expected no. of bytes in
> one of
> its 31 bytes and the bulk IN endpoint if has only lesser to the
> expected no.
> of bytes, it sends a STALL. > As i suggested earlier, you can try "CLEAR_FEATURE"(endpoint stall)
> for
> the bulk in endpoint that stalled. > > Let me know if this helped.. > > Regards, > Gayathri Seshadri. > > ----- Original Message ----- > From: > To: > Sent: Thursday, October 02, 2003 1:36 PM > Subject: [usb] HOW TO Clear STALL condition? > >
> Hi,
> I'm a newbie to USB and USB mass storage devices. > I have a little trouble with my Cypress SL811HS Host > Controller.
> I've got the device to enumerate and I've found all of
it's
> endpoints and
> I'm able to send CBW's to the bulk OUT endpoint and read
my
> data from
> the IN endpoint as well as getting my CSW out from the IN
> endpoint.
> For certain commands like INQUIRY and REQUEST SENSE I
have
> already
> been able to execute in the following sequence..
> 1. Send CBW to bulk OUT endpoint > 2. Read DATA from bulk IN endpoint > 3. Read CSW from bulk IN endpoint. > > For commands like READ_10 and READ_CAPACITY use sequence > above.
> The device WILL be stalled by host.
> Is this STALL just a handshaking message to differentiate a
> data
> transfer from a CSW transfer? And how to clear this STALL
> condition?
> I approciate your help.
> > i.e. > Read_Capacity > Host Device > OUT_CBW -> > In -> > > In -> > > In -> > > In -> > > In -> > > In -> > > In -> > STALL -> //How to clear > this stall > message
> //and
> continue getting > the following
> //data?
> > > > Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard |
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HOW TO Clear STALL condition?
by Unknown on May 5, 2004 |
Not available! | ||
|
Hi
The following gives you the microsoft enumeration sequence.
* Reset
* Get Device Descriptor.(18 bytes).
* Reset
* Set address.
* Get device descriptor (18 bytes).
* Get config descriptor (9 bytes).
* Get config descriptor (all bytes).
* Set configuration.
Regards,
Ravi
----- Original Message -----
From: rkumar_31@yahoo.com>
To: jlin87@yahoo.com>; usb@opencores.org>
Sent: Tuesday, May 04, 2004 11:48 PM
Subject: Re: [usb] HOW TO Clear STALL condition?
Hello all,
can some one give me the microsoft enumeration sequence ?
Thankyou
ravi
----- Original Message -----
From: Jeff Lin jlin87@y...>
To: usb@o..., midas@j...
Date: Wed, 12 Nov 2003 15:01:29 -0800 (PST)
Subject: Re: [usb] HOW TO Clear STALL condition?
> Here you are setting 2B wIndex = 0x8200. That could be the source
> of probelm.
> According to spec, you will need to set wIndex tto EP for clear
> feature of EPs.
> You may want to try with wIndex = 2, the EP#, i.e.
> Setup,payload(0x02,0x01,00,00, 00, 02, 00,00),In,
>
> Do update.
> midas@j... wrote:
> i have already tried your method, but still fail.
> following is my messages:
> CLEAR_FEATURE sequence:
> Setup,payload(0x02,0x01,00,00,0x82,00,00,00),In,
> endpoint 0x02 ,address 0x08(my define)
> but it still gets "STALL".
> Is my method wrong? Or should I use other commands?
> Thanks a lot.
> ----- Original Message -----
> From: "Gayathri Seshadri"
> To:
> Date: Fri, 3 Oct 2003 09:38:18 +0530
> Subject: Re: [usb] HOW TO Clear STALL condition?
>
> > Hi, > > As far as my experience with the USB mass storage protocol, i > would
> suggest you to do a clear feature endpoint stall to the IN
> endpoint
> of the
> bulk type. Normally the cbw suggests the expected no. of bytes > in
> one of
> its 31 bytes and the bulk IN endpoint if has only lesser to > the
> expected no.
> of bytes, it sends a STALL. > As i suggested earlier, you can try "CLEAR_FEATURE"(endpoint > stall)
> for
> the bulk in endpoint that stalled. > > Let me know if this helped.. > > Regards, > Gayathri Seshadri. > > ----- Original Message ----- > From: > To: > Sent: Thursday, October 02, 2003 1:36 PM > Subject: [usb] HOW TO Clear STALL condition? > >
> > Hi,
> > I'm a newbie to USB and USB mass storage devices. > > I have a little trouble with my Cypress SL811HS Host > Controller.
> > I've got the device to enumerate and I've found all of
> it's
> endpoints and
> > I'm able to send CBW's to the bulk OUT endpoint and read
> my
> data from
> > the IN endpoint as well as getting my CSW out from the IN
> endpoint.
> > For certain commands like INQUIRY and REQUEST SENSE I
> have
> already
_______________________________________________
http://www.opencores.org/mailman/listinfo/usb
> > been able to execute in the following sequence..
> > 1. Send CBW to bulk OUT endpoint > > 2. Read DATA from bulk IN endpoint > > 3. Read CSW from bulk IN endpoint. > > > > For commands like READ_10 and READ_CAPACITY use sequence > above.
> > The device WILL be stalled by host.
> > Is this STALL just a handshaking message to differentiate > a
> data
> > transfer from a CSW transfer? And how to clear this STALL
> condition?
> > I approciate your help.
> > > > i.e. > > Read_Capacity > > Host Device > > OUT_CBW -> > > In -> > > > > In -> > > > > In -> > > > > In -> > > > > In -> > > > > In -> > > > > In -> > > STALL -> //How to clear > this stall > message
> > //and
> continue getting > the following
> > //data?
> > > > > > > > Do you Yahoo!? > Protect your identity with Yahoo! Mail AddressGuard > |
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|
HOW TO Clear STALL condition?
by maneesha on Sep 10, 2007 |
maneesha
Posts: 1 Joined: Jun 12, 2009 Last seen: Jun 23, 2009 |
||
|
Hi,
I have been trying to configure SL811HS as device. As per the
enumeration flow i have been able to get first descriptor request i.e
request for 64 bytes-> slave address->im able to get descriptor request
for second time i.e request for 18 bytes......after which i get the
interrupt and i send set Receive data from host. After which i either
dont get the interrupt or my device enumeration starts again.
I would be grateful for solution for the same .
----- Original Message -----
From: Jeff Lin jlin87 at y...>
To: usb at o..., midas at j...
Date: Wed, 12 Nov 2003 15:01:29 -0800 (PST)
Subject: Re: [usb] HOW TO Clear STALL condition?
Here you are setting 2B wIndex = 0x8200. That could be the source
of probelm.
According to spec, you will need to set wIndex tto EP for clear
feature of EPs.
You may want to try with wIndex = 2, the EP#, i.e.
Setup,payload(0x02,0x01,00,00, 00, 02, 00,00),In,
Do update.
midas at j... wrote:
i have already tried your method, but still fail.
following is my messages:
CLEAR_FEATURE sequence:
Setup,payload(0x02,0x01,00,00,0x82,00,00,00),In,
endpoint 0x02 ,address 0x08(my define)
but it still gets "STALL".
Is my method wrong? Or should I use other commands?
Thanks a lot.
----- Original Message -----
From: "Gayathri Seshadri"
To:
Date: Fri, 3 Oct 2003 09:38:18 +0530
Subject: Re: [usb] HOW TO Clear STALL condition?
>
> > Hi, > > As far as my experience with the USB mass storage protocol, i would
> suggest you to do a clear feature endpoint stall to the IN
endpoint
> of the
> bulk type. Normally the cbw suggests the expected no. of bytes in
> one of
> its 31 bytes and the bulk IN endpoint if has only lesser to the
> expected no.
> of bytes, it sends a STALL. > As i suggested earlier, you can try "CLEAR_FEATURE"(endpoint stall)
> for
> the bulk in endpoint that stalled. > > Let me know if this helped.. > > Regards, > Gayathri Seshadri. > > ----- Original Message ----- > From: > To: > Sent: Thursday, October 02, 2003 1:36 PM > Subject: [usb] HOW TO Clear STALL condition? > >
> Hi,
> I'm a newbie to USB and USB mass storage devices. > I have a little trouble with my Cypress SL811HS Host > Controller.
> I've got the device to enumerate and I've found all of
it's
> endpoints and
> I'm able to send CBW's to the bulk OUT endpoint and read
my
> data from
> the IN endpoint as well as getting my CSW out from the IN
> endpoint.
> For certain commands like INQUIRY and REQUEST SENSE I
have
> already
> been able to execute in the following sequence..
> 1. Send CBW to bulk OUT endpoint > 2. Read DATA from bulk IN endpoint > 3. Read CSW from bulk IN endpoint. > > For commands like READ_10 and READ_CAPACITY use sequence > above.
> The device WILL be stalled by host.
> Is this STALL just a handshaking message to differentiate a
> data
> transfer from a CSW transfer? And how to clear this STALL
> condition?
> I approciate your help.
> > i.e. > Read_Capacity > Host Device > OUT_CBW -> > In -> > > In -> > > In -> > > In -> > > In -> > > In -> > > In -> > STALL -> //How to clear > this stall > message
> //and
> continue getting > the following
> //data?
> > > > Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard |
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