text: /*
   * FreeModbus Libary: Atmel AT91SAM3S Demo Application
   * Copyright (C) 2010 Christian Walter <cwalter@embedded-solutions.at>
   *
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *   notice, this list of conditions and the following disclaimer in the
   *   documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *   derived from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * IF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * File: $Id$
   */
  
  /* ----------------------- System includes ----------------------------------*/
  #include <FreeRTOS.h>
  #include <task.h>
  #include <queue.h>
  
  /* ----------------------- Modbus includes ----------------------------------*/
  #include "mb.h"
  #include "mbport.h"
  
  /* ----------------------- Variables ----------------------------------------*/
  static xQueueHandle xQueueHdl;
  
  
  /* ----------------------- Start implementation -----------------------------*/
  BOOL
  xMBPortEventInit( void )
  {
      BOOL            bStatus = FALSE;
      if( 0 != ( xQueueHdl = xQueueCreate( 1, sizeof( eMBEventType ) ) ) )
      {
          bStatus = TRUE;
      }
      return bStatus;
  }
  
  void
  vMBPortEventClose( void )
  {
      if( 0 != xQueueHdl )
      {
          vQueueDelete( xQueueHdl );
          xQueueHdl = 0;
      }
  }
  
  BOOL
  xMBPortEventPost( eMBEventType eEvent )
  {
      BOOL            bStatus = TRUE;
      if( bMBPortIsWithinException(  ) )
      {
          ( void )xQueueSendFromISR( xQueueHdl, ( const void * )&eEvent, pdFALSE );
      }
      else
      {
          ( void )xQueueSend( xQueueHdl, ( const void * )&eEvent, pdFALSE );
      }
  
      return bStatus;
  }
  
  BOOL
  xMBPortEventGet( eMBEventType * peEvent )
  {
      BOOL            xEventHappened = FALSE;
  
      if( pdTRUE == xQueueReceive( xQueueHdl, peEvent, portTICK_RATE_MS * 50 ) )
      {
          xEventHappened = TRUE;
      }
      return xEventHappened;
  }
  