Re: ReadPipeAsync,device is not response

Subject: Re: ReadPipeAsync,device is not response

From: Garth Cummings <email@hidden>

Date: Fri, 30 Jun 2006 09:12:09 -0700

Delivered-to: email@hidden

Hi Jane,

On Jun 30, 2006, at 1:47 AM, email@hidden wrote:

my bulkin endpoint's wMaxPacketSize is 0x0200,

but, when I call GetPipeProperties function to get maxPacketSize,but maxPacketSize is 0x40. Why?

Is your device a full speed device or a high speed device? 0x40 (64) is the largest legal wMaxPacketSize for full-speed bulk endpoints. Please see section 5.8.3 of the USB spec for details.

--gc

____________________________________________________________________

Garth Cummings email@hidden

Sr. Software Engineer

Apple Developer Technical Support

<http://developer.apple.com/technicalsupport>

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References:
	>ReadPipeAsync,device is not response (From: email@hidden)