Motorola USB08 - page 151

Universal USB Device Driver (USBIO)
Programming Interface
USB08 Evaluation Board Designer Reference Manual
MOTOROLA Universal USB Device Driver (USBIO) 151
IOCTL_USBIO_GET_DESCRIPTOR
The IOCTL_USBIO_GET_DESCRIPTOR operation requests a specific
descriptor from the device.
lpInBuffer Pointer to a buffer that contains an USBIO_DESCRIPTOR_REQUEST
(page 187) 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 point to by lpInBuffer, which
has to be sizeof(USBIO_DESCRIPTOR_REQUEST) for this operation.
lpOutBuffer Pointer to a buffer that will receive the descriptor data.
nOutBufferSize Specifies the size in bytes, of the buffer pointed to be lpOutBuffer.
Comments The buffer that is passed to this function in lpOutBuffer should be
large enough to hold the requested descriptor, otherwise only a part of
the descriptor will be returned. The size of the output buffer should be a
multiple of the packet size of the default pipe (endpoint zero).