Motorola USB08 - Manual (Page 157)

Universal USB Device Driver (USBIO)
Programming Interface
USB08 Evaluation Board Designer Reference Manual
MOTOROLA Universal USB Device Driver (USBIO) 157
IOCTL_USBIO_GET_INTERFACE
The IOCTL_USBIO_GET_INTERFACE operation returns the current
alternate setting of a specific interface.
lpInBuffer Pointer to a buffer that contains an USBIO_GET_INTERFACE
(
page 192 ) data structure. This data structure has to be filled completely
by the caller.
nInBufferSize Specifies the size, in bytes, of the buffer pointed to by lpInBuffer ,
which has to be sizeof(USBIO_GET_INTERFACE) for this operation.
lpOutBuffer Pointer to a buffer that will receive an
USBIO_GET_INTERFACE_DATA (
page 193 ) data structure.
nOutBufferSize Specifies the size, in bytes, of the buffer pointed to by lpOutBuffer ,
which has to be at least sizeof(USBIO_GET_INTERFACE_DATA) for
this operation.
Comments A GET_INTERFACE request appears on the bus. The structure
USBIO_GET_INTERFACE_DATA (
page 193 ) returns the current
alternate setting of the interface specified in USBIO_GET_INTERFACE.