108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*
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* FreeModbus Libary: RT-Thread Port
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* Copyright (C) 2013 Armink <armink.ztl@gmail.com>
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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: $Id: porttimer_m.c,v 1.60 2013/08/13 15:07:05 Armink add Master Functions$
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*/
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/* ----------------------- Platform includes --------------------------------*/
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#include "port.h"
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/* ----------------------- Modbus includes ----------------------------------*/
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#include "mb.h"
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#include "mb_m.h"
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#include "mbport.h"
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#if MB_MASTER_RTU_ENABLED > 0 || MB_MASTER_ASCII_ENABLED > 0
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/* ----------------------- Variables ----------------------------------------*/
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static USHORT usT35TimeOut50us;
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static struct rt_timer timer;
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static void prvvTIMERExpiredISR(void);
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static void timer_timeout_ind(void* parameter);
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/* ----------------------- static functions ---------------------------------*/
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static void prvvTIMERExpiredISR(void);
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/* ----------------------- Start implementation -----------------------------*/
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BOOL xMBMasterPortTimersInit(USHORT usTimeOut50us)
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{
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/* backup T35 ticks */
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usT35TimeOut50us = usTimeOut50us;
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rt_timer_init(&timer, "master timer",
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timer_timeout_ind, /* bind timeout callback function */
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RT_NULL,
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(50 * usT35TimeOut50us) / (1000 * 1000 / RT_TICK_PER_SECOND) + 1,
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RT_TIMER_FLAG_ONE_SHOT); /* one shot */
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return TRUE;
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}
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void vMBMasterPortTimersT35Enable()
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{
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rt_tick_t timer_tick = (50 * usT35TimeOut50us)
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/ (1000 * 1000 / RT_TICK_PER_SECOND);
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/* Set current timer mode, don't change it.*/
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vMBMasterSetCurTimerMode(MB_TMODE_T35);
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rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick);
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rt_timer_start(&timer);
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}
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void vMBMasterPortTimersConvertDelayEnable()
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{
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rt_tick_t timer_tick = MB_MASTER_DELAY_MS_CONVERT * RT_TICK_PER_SECOND / 1000;
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/* Set current timer mode, don't change it.*/
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vMBMasterSetCurTimerMode(MB_TMODE_CONVERT_DELAY);
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rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick);
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rt_timer_start(&timer);
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}
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void vMBMasterPortTimersRespondTimeoutEnable()
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{
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rt_tick_t timer_tick = MB_MASTER_TIMEOUT_MS_RESPOND * RT_TICK_PER_SECOND / 1000;
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/* Set current timer mode, don't change it.*/
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vMBMasterSetCurTimerMode(MB_TMODE_RESPOND_TIMEOUT);
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rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick);
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rt_timer_start(&timer);
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}
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void vMBMasterPortTimersDisable()
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{
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rt_timer_stop(&timer);
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}
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void prvvTIMERExpiredISR(void)
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{
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(void) pxMBMasterPortCBTimerExpired();
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}
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static void timer_timeout_ind(void* parameter)
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{
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prvvTIMERExpiredISR();
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}
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#endif
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