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Re: Slightly OT: anybody familiar with USB?
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Re: Slightly OT: anybody familiar with USB?


  • Subject: Re: Slightly OT: anybody familiar with USB?
  • From: Roy Lovejoy <email@hidden>
  • Date: Wed, 21 Apr 2004 13:48:51 -0700

On Apr 21, 2004, at 12:17 PM, Ondra Cada wrote:

Hi,

I regret to say I am no USB guru myself; just using it to communicate
with the Gigaset via an undocumented (sigh) interface. The problem is,
the communication sometimes locks; restarting the application does not
help, but restarting the Gigaset does. The communication is pretty
plain; I just call

(*interface)->ReadPipeAsync(interface, 1, buffer, blockValue,
_readPipeAsyncCompletion, ref)

<ellipses>

Generally this works all right; sometimes though it locks reporting an
error e000404f "Pipe has stalled, error needs to be cleared" in the
console log; in the syslog it adds

Would be grateful for an advice what and how to fix,


have you tried

err = (*interface)->ClearPipeStall(interface, fUSBinPipeRef);

and/or check out

email@hidden (Apple's USB mailing list)

(where the monsters of usb hang out)

on the same page that you signed up for this list..
http://lists.apple.com/

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References: 
 >Slightly OT: anybody familiar with USB? (From: Ondra Cada <email@hidden>)

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