rtt-f030/components/net/freemodbus/modbus/port/portevent.c

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/*
* File : portevent.c
* This file is part of freemodbus in RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2010-04-04 yi.qiu first version
*/
/* ----------------------- Modbus includes ----------------------------------*/
#include <rtthread.h>
#include "mb.h"
#include "mbport.h"
/* ----------------------- Variables ----------------------------------------*/
static struct rt_event event;
/* ----------------------- Start implementation -----------------------------*/
BOOL xMBPortEventInit( void )
{
rt_event_init(&event, "modbus", RT_IPC_FLAG_FIFO);
return TRUE;
}
BOOL xMBPortEventPost( eMBEventType eEvent )
{
/* only care abot EV_FRAME_RECEIVED event */
if(eEvent == EV_FRAME_RECEIVED)
{
rt_event_send(&event, 1<<eEvent);
}
return TRUE;
}
BOOL xMBPortEventGet( eMBEventType * eEvent )
{
rt_uint32_t e;
rt_int32_t time_out = 3000/(1000/RT_TICK_PER_SECOND);
if(rt_event_recv(&event, (1<<EV_FRAME_RECEIVED),
RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR,
time_out, &e) == RT_EOK)
{
*eEvent = EV_FRAME_RECEIVED;
return TRUE;
}
else
{
rt_kprintf("get event timeout\n");
return FALSE;
}
}