56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
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/*
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* File : portevent.c
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* This file is part of freemodbus in RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2010-04-04 yi.qiu first version
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*/
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/* ----------------------- Modbus includes ----------------------------------*/
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#include <rtthread.h>
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#include "mb.h"
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#include "mbport.h"
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/* ----------------------- Variables ----------------------------------------*/
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static struct rt_event event;
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/* ----------------------- Start implementation -----------------------------*/
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BOOL xMBPortEventInit( void )
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{
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rt_event_init(&event, "modbus", RT_IPC_FLAG_FIFO);
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return TRUE;
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}
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BOOL xMBPortEventPost( eMBEventType eEvent )
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{
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/* only care abot EV_FRAME_RECEIVED event */
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if(eEvent == EV_FRAME_RECEIVED)
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rt_event_send(&event, 1<<eEvent);
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return TRUE;
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}
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BOOL xMBPortEventGet( eMBEventType * eEvent )
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{
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rt_uint32_t e;
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rt_int32_t time_out = 100/(1000/RT_TICK_PER_SECOND);
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if(rt_event_recv(&event, (1<<EV_FRAME_RECEIVED),
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RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
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time_out, &e) == RT_EOK)
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{
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*eEvent = EV_FRAME_RECEIVED;
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return TRUE;
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}
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else return FALSE;
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}
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