I seem to be having a problem with Read and Write pipes. I'm trying to
write some data into a device, and then get back some data from the
device. Since I'm using WritePipeAsync and ReadPipeAsync I've got a
gut feeling that something's not completing (or a pipe is stalling?).
In some tracing code, I see a bunch of writes, a bunch of reads, but
the completion routine is called later.
Is there a way of telling if a pipe has stalled? I was looking around
the web and saw some examples where there were mentions to ClearPipe
and ResetPipe, but in the example, it looked like they were always
calling ClearPipe and ResetPipe. Is that a workaround for a bug? Or
should I are their some gotcha's with WritePipeAsync/ReadPipeAsync?
Also, in this code that I inherited, I notice that they are using
endpoints 1 and 2. When I run up UsbProber, I see the end points are
0x01 and 0x81. I know that the high order bit represents 'In'. Is
there are relationship between the endpoints (i.e. I should be using
0x01 and 0x81 vice 1 and 2?)
Thanks in advance for your time
John Cebasek
email@hidden
_______________________________________________
usb mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/usb
Do not post admin requests to the list. They will be ignored.
