Designer Reference Manual USB08 Evaluation Board
208 Universal USB Device Driver (USBIO) MOTOROLA
Universal USB Device Driver (USBIO)
USBIO_PIPE_PARAMETERS
The USBIO_PIPE_PARAMETERS structure contains pipe specific
parameter settings of the USBIO driver.
Definition typedef struct _USBIO_PIPE_PARAMETERS{
ULONG Flags;
} USBIO_PIPE_PARAMETERS;
Member Flags
This field contains zero or the following value.
USBIO_SHORT_TRANSFER_OK
If this flag is set, the USBIO driver does not return a n er ror dur i ng
read operations from a Bulk or Interrupt pipe if a packet received
from the device is shorter than the maximum packet size of the
endpoint. Otherwise, a short packet causes an error condition.
This option is meaningful for IN pipes only.
Comments This structure is intended to be used with
IOCTL_USBIO_GET_PIPE_PARAMETERS (page 178) and
IOCTL_USBIO_SET_PIPE_PARAMETERS (page 179) operations.
The default setting of this parameter can be changed by means of the
registry parameter ShortTransferOk. This parameter has an effect
only for read operations from Bulk or Interrupt pipes. For Isochronous
pipes the flags in the appropriate ISO data structures are used (see
USBO_ISO_TRANSFER (page 210)).