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Reg:CFRunLoopRun() in isochronous

Hi All,

 

I am writing isochronous pipe read routine for usb . in my case it never exits CFRunLoopRun() . It enters the callback function after doing ReadIsochPipeAsync() but it does not return kIOReturnSuccess. I have taken the sample code from this list only that once Barry provided to some one.

 

 ret = (*intf)->ReadIsochPipeAsync(intf, inPipeRef, transfers[irp].buffer, frameNumber, FRAMES_PER_IRP,transfers[irp].frameList, (void *)isocCallback, &transfers[irp]);

 

Where can be the problem ?

Pls suggest

 

Regards,

selva

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