LPISSUE_INTERRUPT_TRANSFER (Windows CE 5.0)

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This function initiates an interrupt transfer with a universal serial bus (USB) device on the specified endpoint.

typedef USB_TRANSFER (* LPISSUE_INTERRUPT_TRANSFER)(  USB_PIPE hPipe,  LPTRANSFER_NOTIFY_ROUTINE lpStartAddress,  LPVOID lpvNotifyParameter,   DWORD dwFlags,   DWORD dwBufferSize,  LPVOID lpvBuffer,   ULONG uBufferPhysicalAddress);

Parameters

• hPipe
  [in] Handle to an open USB pipe.
• lpStartAddress
  [in] Pointer to the address of a callback routine of type LPTRANSFER_NOTIFY_ROUTINE, or NULL if no callback routine is necessary
• lpvNotifyParameter
  [in] Parameter to pass to the callback routine.
• dwFlags
  [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
• dwBufferSize
  [in] Size of data buffer.
• lpvBuffer
  [in] Pointer to the data buffer. If the physical buffer address is specified, this must contain the virtual address of the buffer.
• uBufferPhysicalAddress
  [in] Physical address, which might be NULL, of the data buffer.

Return Values

A USB_TRANSFER handle indicates success. NULL indicates failure. IssueControlTransfer behaves either synchronously or asynchronously, depending on the value you provide for lpStartAddress and whether dwFlags contains the USB_NO_WAIT flag.

The following table shows the possible flags.

When behaving asynchronously, this function invokes the callback function optionally specified by lpStartAddress when the transfer is complete.

Requirements

OS Versions: Windows CE 2.10 and later.
Header: Usbdi.h.

See Also

LPTRANSFER_NOTIFY_ROUTINE

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