/* * FreeModbus Libary: RT-Thread Port * Copyright (C) 2013 Armink * * 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() { 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); rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick); rt_timer_start(&timer); } void vMBMasterPortTimersConvertDelayEnable() { 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); rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick); rt_timer_start(&timer); } void vMBMasterPortTimersRespondTimeoutEnable() { 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); rt_timer_control(&timer, RT_TIMER_CTRL_SET_TIME, &timer_tick); rt_timer_start(&timer); } void vMBMasterPortTimersDisable() { rt_timer_stop(&timer); } void prvvTIMERExpiredISR(void) { (void) pxMBMasterPortCBTimerExpired(); } static void timer_timeout_ind(void* parameter) { prvvTIMERExpiredISR(); } #endif