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/*
* FreeModbus Libary: NuttX Port
* Based on the FreeModbus Linux port by:
*
* 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 <apps/modbus/mb.h>
#include <apps/modbus/mbport.h>
#include "port.h"
/* ----------------------- Variables ----------------------------------------*/
static eMBEventType eQueuedEvent;
static bool xEventInQueue;
/* ----------------------- Start implementation -----------------------------*/
bool
xMBPortEventInit( void )
{
xEventInQueue = false;
return true;
}
bool
xMBPortEventPost( eMBEventType eEvent )
{
xEventInQueue = true;
eQueuedEvent = eEvent;
return true;
}
bool
xMBPortEventGet( eMBEventType * eEvent )
{
bool xEventHappened = false;
if( xEventInQueue )
{
*eEvent = eQueuedEvent;
xEventInQueue = false;
xEventHappened = true;
}
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( );
/* Check if any of the timers have expired. */
vMBPortTimerPoll( );
}
return xEventHappened;
}
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