Hi,
I have a PCMCIA Card that maps to USB. I am writing to
the bulk OUT interface pipe and it say it is
succeeding by returning kIOReturnSuccess. However,
when I try read from the IN Pipe using ReadPipe
function, the function never comes back and the USB
Device can not be opened anymore unless I restart the
machine. In this context my questions are:
1. How can I verify that the device is being
successfully written to?
2. How can prevent my program from going into an
unknown state. I can afford to read the response in
packets.
3. How can I prevent my program from "paralyzing" the
USB bus, is there a good way to reset the bus? please
advise.
Again, my program writes a 4-byte command and expects
about 256 bytes as a response to be read from the IN
pipe.
Thanks for your promptness in responding.
Cheers,
Ron.
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