
2006, QNX Software Systems GmbH & Co. KG. usbd setup control()
addr Address for start of transfer — you must use the buffer
allocated by usbd
alloc().
len The length (in bytes) of the data transfer.
Returns:
EOK Success.
Classification:
QNX Neutrino, QNX 4
Safety
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes
Caveats:
To ensure that the correct physical address will be used, you must use
the buffer allocated by usbd
alloc() for the addr parameter.
See also:
usbd descriptor(), usbd feature(), usbd io(), usbd setup bulk(),
usbd
setup interrupt(), usbd setup isochronous(),
usbd
setup vendor(), usbd status()
November 2, 2006 Chapter 4 USB Library Reference 85
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