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 -----------------------------*/
xMBPortTimersInit(USHORT usTim1Timerout50us)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
vMBPortTimersEnable()45 void vMBPortTimersEnable()
46 {
47 rt_timer_start(&timer);
48 }
49
vMBPortTimersDisable()50 void vMBPortTimersDisable()
51 {
52 rt_timer_stop(&timer);
53 }
54
prvvTIMERExpiredISR(void)55 void prvvTIMERExpiredISR(void)
56 {
57 (void) pxMBPortCBTimerExpired();
58 }
59
timer_timeout_ind(void * parameter)60 static void timer_timeout_ind(void* parameter)
61 {
62 prvvTIMERExpiredISR();
63 }
64