LPUpdateFlags (Windows Embedded CE 6.0)

1/6/2010

This function updates the transfer flags required by the user and masks any flags the platform dependent driver (PDD) does not support.

Syntax

typedef DWORD (* LPUpdateFlags)(
    PDMA_PDD_ADAPTER_CONTEXT lpPddAdapterContext,
  DWORD dwFlags
);

dwFlags
[in] Global Direct Memory Access (DMA) transfer flag. This flag is used to determine what kind of transfer the device wants.

The following table shows the possible flags.

Value	Description
DMA_FLAGS_WRITE_TO_DEVICE	Set for write operation.
DMA_FLAGS_INC_DEVICE_ADDRESS	Indicates the operation requires incrementing the source and destination address. This flag can be used to accomplish memory to memory DMA transfers.
DMA_FLAGS_RESET_DEVICE_ADDRESS	Resets device address to the original value used by DMAAllocateChannel. The device address can be changed when a DMA transfer with the flag DMA_FLAGS_INC_DEVICE_ADDRESS executes.
DMA_FLAGS_USER_OPTIONAL_DEVICE	Sets the DMA transfer to automatically reload until it is explicitly canceled.
DMA_FLAGS_NOT_AUTO_START	Indicates the transfer is queued to hardware until a call to DMAStartTransfer.

Returns global DMA transfer flags that the PDD has updated.

Header	dmamif.h
Windows Embedded CE	Windows Embedded CE 6.0 and later