rt-thread-official/components/net/freemodbus/port/porttimer_m.c

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/*
* FreeModbus Libary: RT-Thread Port
* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
*
* 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: $Id: porttimer_m.c,v 1.60 2013/08/13 15:07:05 Armink add Master Functions$
*/
/* ----------------------- Platform includes --------------------------------*/
#include "port.h"
/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mb_m.h"
#include "mbport.h"
#if MB_MASTER_RTU_ENABLED > 0 || MB_MASTER_ASCII_ENABLED > 0
/* ----------------------- Variables ----------------------------------------*/
static USHORT usT35TimeOut50us;
static struct rt_timer timer;
static void prvvTIMERExpiredISR(void);
static void timer_timeout_ind(void* parameter);
/* ----------------------- static functions ---------------------------------*/
static void prvvTIMERExpiredISR(void);
/* ----------------------- Start implementation -----------------------------*/
BOOL xMBMasterPortTimersInit(USHORT usTimeOut50us)
{
/* backup T35 ticks */
usT35TimeOut50us = usTimeOut50us;
rt_timer_init(&timer, "master timer",
timer_timeout_ind, /* bind timeout callback function */
RT_NULL,
(50 * usT35TimeOut50us) / (1000 * 1000 / RT_TICK_PER_SECOND),
RT_TIMER_FLAG_ONE_SHOT); /* one shot */
return TRUE;
}
void vMBMasterPortTimersT35Enable()
{
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rt_tick_t timer_tick = (50 * usT35TimeOut50us)
/ (1000 * 1000 / RT_TICK_PER_SECOND);
/* Set current timer mode, don't change it.*/
vMBMasterSetCurTimerMode(MB_TMODE_T35);
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rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick);
rt_timer_start(&timer);
}
void vMBMasterPortTimersConvertDelayEnable()
{
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rt_tick_t timer_tick = MB_MASTER_DELAY_MS_CONVERT * RT_TICK_PER_SECOND / 1000;
/* Set current timer mode, don't change it.*/
vMBMasterSetCurTimerMode(MB_TMODE_CONVERT_DELAY);
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rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick);
rt_timer_start(&timer);
}
void vMBMasterPortTimersRespondTimeoutEnable()
{
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rt_tick_t timer_tick = MB_MASTER_TIMEOUT_MS_RESPOND * RT_TICK_PER_SECOND / 1000;
/* Set current timer mode, don't change it.*/
vMBMasterSetCurTimerMode(MB_TMODE_RESPOND_TIMEOUT);
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rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick);
rt_timer_start(&timer);
}
void vMBMasterPortTimersDisable()
{
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rt_timer_stop(&timer);
}
void prvvTIMERExpiredISR(void)
{
(void) pxMBMasterPortCBTimerExpired();
}
static void timer_timeout_ind(void* parameter)
{
prvvTIMERExpiredISR();
}
#endif