Motorola USB08 - page 161

Universal USB Device Driver (USBIO)
Programming Interface
USB08 Evaluation Board Designer Reference Manual
MOTOROLA Universal USB Device Driver (USBIO) 161
IOCTL_USBIO_SET_INTERFACE
The IOCTL_USBIO_SET_INTERFACE operation sets the alternate
setting of a specific interface.
lpInBuffer Pointer to a buffer that contains an USBIO_INTERFACE_SETTING
(page 194) data structure. This data structure has t o be f illed compl etely
by the caller.
nInBufferSize Specifies the size, in bytes, of the buffer pointed to by lpInBuffer,
which has to be sizeof(USBIO_INTERFACE_SETTING) for this
operation.
lpOutBuffer Not used with this operation. Set to NULL.
nOutBufferSize Not used with this operation. Set to zero.
Comments A SET_INTERFACE request appears on the bus.
All pipe handles associated with the interface will be unbound and all
pending requests will be cancelled. If this request returns with success,
new pipe objects are available. The operation
IOCTL_USBIO_GET_CONFIGURATION_INFO (page 166) may be
used to query all available pipes and interfaces.