1 /* 2 * FreeModbus Libary: RT-Thread Port 3 * Copyright (C) 2013 Armink <[email protected]> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2.1 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 * 19 * File: $Id: porttimer.c,v 1.60 2013/08/13 15:07:05 Armink $ 20 */ 21 22 /* ----------------------- Platform includes --------------------------------*/ 23 #include "port.h" 24 25 /* ----------------------- Modbus includes ----------------------------------*/ 26 #include "mb.h" 27 #include "mbport.h" 28 29 /* ----------------------- static functions ---------------------------------*/ 30 static struct rt_timer timer; 31 static void prvvTIMERExpiredISR(void); 32 static void timer_timeout_ind(void* parameter); 33 34 /* ----------------------- Start implementation -----------------------------*/ 35 BOOL xMBPortTimersInit(USHORT usTim1Timerout50us) 36 { 37 rt_timer_init(&timer, "slave timer", 38 timer_timeout_ind, /* bind timeout callback function */ 39 RT_NULL, 40 (50 * usTim1Timerout50us) / (1000 * 1000 / RT_TICK_PER_SECOND) + 1, 41 RT_TIMER_FLAG_ONE_SHOT); /* one shot */ 42 return TRUE; 43 } 44 45 void vMBPortTimersEnable() 46 { 47 rt_timer_start(&timer); 48 } 49 50 void vMBPortTimersDisable() 51 { 52 rt_timer_stop(&timer); 53 } 54 55 void prvvTIMERExpiredISR(void) 56 { 57 (void) pxMBPortCBTimerExpired(); 58 } 59 60 static void timer_timeout_ind(void* parameter) 61 { 62 prvvTIMERExpiredISR(); 63 } 64