Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The following table shows the universal serial bus (USB) host controller driver functions.
| Programming element | Description |
|---|---|
| GetTransferError | This function returns an error value associated with a USB transfer. |
| LPABORT_PIPE_TRANSFERS | This function aborts all transfers on an open USB pipe. |
| LPABORT_TRANSFER | This function aborts an active transfer. |
| LPCLEAR_FEATURE | This function sends a CLEAR_FEATURE request to a USB device. |
| LPCLOSE_PIPE | This function closes an open pipe handle. |
| LPCLOSE_TRANSFER | This function closes a USB transfer handle. |
| LPDEVICE_NOTIFY_ROUTINE | This function receives device notifications. Client drivers register this function with the USBD to recieve device notifications. |
| LPDISABLE_DEVICE | This function disables an attached device by disabling the port on the USB hub. After the attached device is disabled, it can be optionally re-enabled by the USB host controller. |
| LPFIND_INTERFACE | This function searches for a specific interface on a USB device. |
| LPGET_DESCRIPTOR | This function sends a GET_DESCRIPTOR request to a USB device. |
| LPGET_DEVICE_INFO | This function gets a pointer to a device information structure. |
| LPGET_FRAME_LENGTH | This function gets a current USB frame length. |
| LPGET_FRAME_NUMBER | This function gets a current USB frame number. |
| LPGET_INTERFACE | This function sends a request to a USB device for information about alternate device settings. |
| LPGET_ISOCH_RESULTS | This function gets the status of an active isochronous transfer. |
| LPGET_STATUS | This function sends a GET_STATUS request to a USB device. |
| LPGET_TRANSFER_STATUS | This function gets the status of an active transfer. |
| LPGET_USBD_VERSION | This function retrieves the version number of the current USB driver interface. |
| LPIS_DEFAULT_PIPE_HALTED | This function is deprecated. It always returns FALSE. The default pipe never halts. |
| LPIS_PIPE_HALTED | This function checks if a USB pipe is in a halted state. |
| LPIS_TRANSFER_COMPLETE | This function checks whether a transfer has completed. |
| LPISSUE_BULK_TRANSFER | This function initiates a bulk transfer to a USB device on the specified endpoint. |
| LPISSUE_CONTROL_TRANSFER | This function initiates a control transfer with a USB device on the specified endpoint. |
| LPISSUE_INTERRUPT_TRANSFER | This function initiates an interrupt transfer with a USB device on the specified endpoint. |
| LPISSUE_ISOCH_TRANSFER | This function initiates an isochronous transfer with a USB device. |
| LPISSUE_VENDOR_TRANSFER | This function sends a vendor-specific control transfer to a USB device. |
| LPLOAD_GENERIC_INTERFACE_DRIVER | This function load drivers for other interfaces on a device. USB drivers call this function. |
| LPOPEN_CLIENT_REGISTRY_KEY | This function opens a registry key associated with a USB client driver. |
| LPOPEN_PIPE | This function opens a pipe for communication with a USB device. |
| LPREGISTER_CLIENT_DRIVER_ID | This function registers a unique string to identify a USB client driver. |
| LPREGISTER_CLIENT_SETTINGS | This function registers settings for loading a USB client driver. |
| LPREGISTER_NOTIFICATION_ROUTINE | This function registers a callback function for device notifications. |
| LPRELEASE_FRAME_LENGTH_CONTROL | This function releases exclusive access to USB frame-length control. |
| LPRESET_DEFAULT_PIPE | This function resets the default pipe to a USB device. |
| LPRESET_PIPE | This function resets an open USB pipe. |
| LPRESUME_DEVICE | This function resumes the attached device by resuming the port on the USB hub. |
| LPSET_DESCRIPTOR | This function sends a SET_DESCRIPTOR request to a USB device. |
| LPSET_FEATURE | This function sends a SET_FEATURE request to a USB device. |
| LPSET_FRAME_LENGTH | This function changes the USB frame length. |
| LPSET_INTERFACE | This function sends a SET_INTERFACE request to a USB device to change the device's settings. |
| LPSUSPEND_DEVICE | This function suspends an attached device by suspending the port on the USB hub. After being suspended, the device can be resumed by the LPRESUME_DEVICE function or by a global resume sent from the USB bus. |
| LPSYNC_FRAME | This function sends a SYNCH_FRAME request to a USB device. |
| LPTAKE_FRAME_LENGTH_CONTROL | This function registers for exclusive access to control the USB frame length. |
| LPTRANSFER_NOTIFY_ROUTINE | This function executes when a transfer completes. |
| LPTRANSLATE_STRING_DESCR | This function translates a USB string descriptor into a null-terminated string. |
| LPUN_REGISTER_CLIENT_DRIVER_ID | This function unregisters a client driver's unique driver identifier. |
| LPUN_REGISTER_CLIENT_SETTINGS | This function deregisters USB device driver settings. |
| LPUN_REGISTER_NOTIFICATION_ROUTINE | This function removes a device notification callback function. |
| USBDeviceAttach | This function is a USB device attach routine. USB host client drivers must implement this function. |
| USBInstallDriver | This function installs a USB client driver. USB host client drivers must implement this function. |
| USBUnInstallDriver | This function uninstalls a USB client driver. USB host client drivers must implement this function. |
Send Feedback on this topic to the authors