forked from Archive/PX4-Autopilot
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/*
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* FreeModbus Libary: NuttX Port
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* Based on the FreeModbus Linux port by:
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*
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* Copyright (C) 2006 Christian Walter <wolti@sil.at>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* File: $Id: portevent.c,v 1.1 2006/08/01 20:58:49 wolti Exp $
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*/
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/* ----------------------- Modbus includes ----------------------------------*/
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#include <apps/modbus/mb.h>
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#include <apps/modbus/mbport.h>
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#include "port.h"
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/* ----------------------- Variables ----------------------------------------*/
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static eMBEventType eQueuedEvent;
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static bool xEventInQueue;
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/* ----------------------- Start implementation -----------------------------*/
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bool
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xMBPortEventInit( void )
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{
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xEventInQueue = false;
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return true;
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}
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bool
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xMBPortEventPost( eMBEventType eEvent )
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{
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xEventInQueue = true;
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eQueuedEvent = eEvent;
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return true;
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}
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bool
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xMBPortEventGet( eMBEventType * eEvent )
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{
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bool xEventHappened = false;
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if( xEventInQueue )
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{
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*eEvent = eQueuedEvent;
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xEventInQueue = false;
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xEventHappened = true;
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}
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else
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{
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/* Poll the serial device. The serial device timeouts if no
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* characters have been received within for t3.5 during an
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* active transmission or if nothing happens within a specified
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* amount of time. Both timeouts are configured from the timer
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* init functions.
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*/
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( void )xMBPortSerialPoll( );
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/* Check if any of the timers have expired. */
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vMBPortTimerPoll( );
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}
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return xEventHappened;
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}
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