Gx5733ModuleBufferGetState

GX5701, GX5702, GX5704

Gx5733ModuleBufferGetState (nHandle, nPort, pnState, pnStatus)

Name	Type	Description
nHandle	SHORT	Handle to a GX5733 board.
nPort	SHORT	Module port 0 (GX5733_PORT0) only.
pnState	PSHORT	Returned Buffer state can be as follow: 0. GX5733_MODULE_BUFFER_EMPTY: buffer is empty (reading from the buffer) or not full (writing to the buffer). 1. GX5733_MODULE_BUFFER_FULL: buffer is full (writing to the buffer) or buffer is empty (reading from the buffer).
pnStatus	PSHORT	Returned status: 0 on success, negative number on failure.

When reading or writing to the buffer the state is as follow:

Writing to the buffer:

Indicates the buffer in not yet full.
The buffer is full. In order to write new data the buffer needs to be cleared first by calling Gx5733ModuleBufferClear or by reading data from the buffer using Gx5733ModuleBufferReadData.

Reading from the buffer:

The following example returns Module 0 buffer flag state:

SHORT nState, nStatus;

Gx5733ModuleBufferGetState (nHandle, GX5733_PORT0, &nState, &nStatus);