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- /*
- * FreeModbus Libary: Linux Port
- * Copyright (C) 2006 Christian Walter <wolti@sil.at>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * File: $Id: portevent.c,v 1.1 2006/08/01 20:58:49 wolti Exp $
- */
- /* ----------------------- Modbus includes ----------------------------------*/
- #include "mb.h"
- #include "mbport.h"
- #include "mbctx.h"
- #include "mbtcp.h"
- /* ----------------------- Variables ----------------------------------------*/
- static eMBEventType eQueuedEvent;
- static BOOL xEventInQueue;
- /* ----------------------- Start implementation -----------------------------*/
- BOOL
- xMBPortEventInit( fmodbus_t* ctx )
- {
- ctx->xEventInQueue = FALSE;
- return TRUE;
- }
- BOOL
- xMBPortEventPost(fmodbus_t* ctx, eMBEventType eEvent )
- {
- ctx->xEventInQueue = TRUE;
- ctx->eQueuedEvent = eEvent;
- return TRUE;
- }
- BOOL
- xMBPortEventGet(fmodbus_t* ctx, eMBEventType * eEvent )
- {
- BOOL xEventHappened = FALSE;
- if( ctx->xEventInQueue )
- {
- *eEvent = ctx->eQueuedEvent;
- ctx->xEventInQueue = FALSE;
- xEventHappened = TRUE;
- }
- else
- {
- if( ctx->ucMBAddress == MB_TCP_PSEUDO_ADDRESS)
- {
- /* We can't do anything with errors from the pooling module. */
- ( void )xMBPortTCPPool( ctx );
- }
- else
- {
- /* Poll the serial device. The serial device timeouts if no
- * characters have been received within for t3.5 during an
- * active transmission or if nothing happens within a specified
- * amount of time. Both timeouts are configured from the timer
- * init functions.
- */
- ( void )xMBPortSerialPoll( ctx );
- /* Check if any of the timers have expired. */
- vMBPortTimerPoll( ctx );
- }
- }
- return xEventHappened;
- }
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