IssueInterruptTransfer (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.

DWORD IssueInterruptTransfer(   LPCUSB_FUNCS UsbFuncs,  USB_PIPE hPipe,  LPTRANSFER_NOTIFY_ROUTINE NotifyRoutine,  PVOID NotifyContext,  DWORD Flags,  LPVOID pBuffer,  ULONG PhysAddr,  DWORD BufferLength,  LPDWORD pBytesTransferred,  DWORD dwTimeout,  PUSB_ERROR pUsbRc);

Parameters

• UsbFuncs
  [in] Pointer to a USB_FUNCS structure.
• hPipe
  [in] Handle to an open USB pipe.
• NotifyRoutine
  [in] Pointer to a transfer completion routine of type LPTRANSFER_NOTIFY_ROUTINE, or NULL if no callback routine is necessary.
• NotifyContext
  [in] Parameter to pass to LPTRANSFER_NOTIFY_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
• pBuffer
  [in] Pointer to the transfer buffer.
• PhysAddr
  [in] Physical address, which might be NULL, of the data buffer.
• BufferLength
  [in] Length of the tranfer buffer, pBuffer.
• pBytesTransferred
  [out] Number of bytes transferred.
• dwTimeout
  [in] Timeout in milliseconds (ms).
• pUsbRc
  [out] Returns USB_ERROR or USB_TRANSFER.

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: Usbclient.h.

See Also

AbortTransfer | GetTransferStatus | LPIS_TRANSFER_COMPLETE | LPTRANSFER_NOTIFY_ROUTINE | USB_FUNCS

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