Returns an event buffer to the MSPP service library.

DWORD mspReleaseBuffer (MSPHD msphd,
void *buffer)

msphd The MSPP handle of the channel or endpoint that sent the data buffer.

buffer Address of the buffer to be released.

• SUCCESS
• CTAERR_BAD_ARGUMENT
  The function argument had an invalid value or a required pointer argument was NULL.
• CTAERR_INVALID_CTAHD
  The CTA context handle is invalid.
• CTAERR_INVALID_HANDLE
  An invalid handle was passed as an argument to this function.
• MSPERR_ENDPOINT_NOT_ALLOCATED
  The MSPP endpoint is defined, but not yet allocated on the board.
• MSPERR_DRIVER_COMMAND_FAILED
  An SPI command has failed.
• MSPERR_INVALID_HANDLE
  The specified MSPP endpoint/channel is not valid.

None.

This function returns retrieved event buffers so the application can reuse them.

If an application uses an endpoint or a channel with an attached buffer, but does not return the buffer (via mspReleaseBuffer), the number of events received will be limited to five. Subsequent events will be dropped.

mspSendQuery, mspSendCommand

if(Event.size != 0 && Event.buffer != NULL  )
{
    ret = mspReleaseBuffer( Event.objHd, Event.buffer);
    Event.buffer = NULL;
    Event.size = 0;
    if ( ret != SUCCESS)
        return FAILURE;
}