IssueVendorTransfer (Windows CE 5.0)
This function sends a vendor-specific control transfer to a universal serial bus (USB) device.
DWORD IssueVendorTransfer( LPCUSB_FUNCS UsbFuncs, HANDLE hUsbDevice, LPTRANSFER_NOTIFY_ROUTINE NotifyRoutine, PVOID NotifyContext, DWORD Flags, PUSB_DEVICE_REQUEST pControlHeader, LPVOID pBuf, ULONG PhysAddr, LPDWORD pBytesTransferred, DWORD dwTimeout, PUSB_ERROR pUsbRc);
Parameters
- UsbFuncs
[in] Pointer to a USB_FUNCS structure. - hUsbDevice
[in] Handle to a USB device. - NotifyRoutine
[in] Pointer to a LPTRANSFER_NOTIFY_ROUTINE, which might be NULL, of a callback routine. - NotifyContext
[in] Pointer to the parameter to pass to a callback routine. - Flags
[in] Flags for the transfer. These flags shown in the following list are declared in the Usbtypes.h header file.- USB_IN_TRANSFER
- USB_OUT_TRANSFER
- USB_NO_WAIT
- USB_SHORT_TRANSFER_OK
- USB_START_ISOCH_ASAP
- USB_COMPRESS_ISOCH
- USB_SEND_TO_DEVICE
- USB_SEND_TO_INTERFACE
- USB_SEND_TO_ENDPOINT
- USB_DONT_BLOCK_FOR_MEM
- pControlHeader
[in] Pointer to a device request header. - pBuf
[in] Data buffer. If a physical buffer address is specified in PhysAddr, this parameter must contain the virtual address of the buffer. - PhysAddr
[in] Physical address of the data buffer, which might be NULL. - pBytesTransferred
[out] Number of bytes transferrred. - dwTimeout
[in] Timeout in milliseconds (ms). - pUsbRc
[out] USB_ERROR or USB_TRANSFER.
Return Values
A USB_TRANSFER handle indicates success. NULL indicates failure.
Remarks
This function initiates a control transfer to a USB device on the default endpoint, zero (0). This function is intended for vendor-specific transfers. For standard transfers, use a corresponding function, such as LPGET_INTERFACE or LPSET_INTERFACE.
Requirements
OS Versions: Windows CE 2.10 and later.
Header: Usbclient.h.
See Also
AbortTransfer | LPGET_INTERFACE | GetTransferStatus | LPIS_TRANSFER_COMPLETE | LPTRANSFER_NOTIFY_ROUTINE | LPSET_INTERFACE | USB_FUNCS
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