source: trunk/kernel/kern/rt_timer.h @ 134

Last change on this file since 134 was 1, checked in by alain, 8 years ago

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1/*
2 * kern/rt_timer.h - real-time timer interface
3 *
4 * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless
5 * Copyright (c) 2011,2012 UPMC Sorbonne Universites
6 *
7 * This file is part of ALMOS-kernel.
8 *
9 * ALMOS-kernel is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2.0 of the License.
12 *
13 * ALMOS-kernel is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with ALMOS-kernel; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#ifndef  _RT_TIMER_H_
24#define  _RT_TIMER_H_
25
26#include <types.h>
27
28/** Real-Time timer commands */
29#define RT_TIMER_STOP    0x00
30#define RT_TIMER_RUN     0x01
31#define RT_TIMER_ADJUST  0x02
32
33/** Real-Time timer parameters */
34struct rt_params_s
35{
36        uint_t rt_cmd;
37        sint_t rt_value;
38        void *pv_data;
39};
40
41/** Initialize Real-Time timer source */
42error_t rt_timer_init(uint_t period, uint_t withIrq);
43
44/** Read Real-Time timer current value  */
45error_t rt_timer_read(uint_t *time);
46
47/** Set Real-Time timer's current value */
48error_t rt_timer_set(uint_t time);
49
50/** Set Real-Time timer's period */
51error_t rt_timer_setperiod(uint_t period);
52
53/** Send commands to Real-Time timer device */
54error_t rt_timer_ctrl(struct rt_params_s *param);
55
56#endif  /* _RT_TIMER_H_ */
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