Re: Decode error code

USB.h: #define kIOUSBNotSent1Err iokit_usb_err(14) // 0xe000400e Transaction not sent

This means that your transaction wasn't sent over the bus. For an Isoch transaction, that usually means it's scheduled too far in the past (or perhaps too far in the future). That is exactly why you don't see any packets on the USB bus.

Normally, driver use GetFrameNumber to find the current frame number, and schedule their first transactions in the frame list a few frames in the future (ie, add 2 or 3 to the value returned by GetFrameNumber).

Hope that helps.

David Ferguson

Apple

On Dec 20, 2007, at 5:41 AM, Andrew Patlan wrote:

Hi!

I make a driver for usb-device that used isochronous pipes.

When i make call WriteIsochPipeAsync(...)
no error received, but in callback function i have got error
code:
isocCallback with status (0xE000400E) USB error 14(0xE)
At the USB bus by analyser i don't see any isochronous packets.

Other bulk/intterupt exchange work without problem.

What means that error code?

Thank
and
best regards
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Usb mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/usb/email@hidden

This email sent to email@hidden

References:
	>Decode error code (From: "Andrew Patlan" <email@hidden>)