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usbd_setup_interrupt()

Set up a URB for an interrupt transfer

Synopsis:

#include <sys/usbdi.h>

int usbd_setup_interrupt( struct usbd_urb *urb,
                          _uint32 flags,
                          void *addr,
                          _uint32 len );

Arguments:

urb

An opaque handle (from usbd_alloc_urb()).

flags

One of the following:

• URB_DIR_IN--specify incoming (device-to-PC) transfer.
• URB_DIR_OUT--specify outgoing (PC-to-device) transfer.
• URB_DIR_NONE--don't specify the direction.

You can optionally OR in the following:

• URB_SHORT_XFER_OK--allow short transfers.

addr

The address for the start of the transfer. You must use the buffer allocated by usbd_alloc().

len

The length (in bytes) of the data transfer.

Library:

libusbdi

Description:

This routine sets up a URB for an interrupt transfer.

Returns:

EOK

Success.

Classification:

QNX Neutrino, QNX 4

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	No
Thread	Yes

See also:

usbd_setup_bulk(), usbd_setup_control(), usbd_setup_isochronous(), usbd_setup_vendor()

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