4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
35 * \author Bernardo Innocenti <bernie@develer.com>
37 * \brief Low-level timer module for Qt emulator (implementation).
39 #include <cfg/compiler.h> /* hptime.t */
42 #include <QtCore/QDateTime>
43 #include <QtCore/QTimer>
46 // The user interrupt server routine
51 * Singleton class for Qt-based hardware timer emulation.
53 class EmulTimer : public QObject
58 /// System timer (counts ms since application startup)
61 /// The 1ms "hardware" tick counter.
65 * We deliberately don't use RAII because the real hardware
66 * we're simulating needs to be initialized manually.
70 /// Private ctor (singleton)
71 EmulTimer() : initialized(false) { }
74 /// Return singleton instance
75 static EmulTimer &instance()
81 /// Start timer emulator.
84 // Timer initialized twice?
87 // Record initial time
90 // Activate timer interrupt
91 timer.connect(&timer, SIGNAL(timeout()), this, SLOT(timerInterrupt()));
92 timer.start(1000 / TIMER_TICKS_PER_SEC);
97 /// Return current time in high-precision format.
101 return system_time.elapsed();
105 void timerInterrupt(void)
107 // Just call user interrupt server, timer restarts automatically.
113 #include "timer_qt_moc.cpp"
116 /// HW dependent timer initialization.
117 static void timer_hw_init(void)
119 // Kick EmulTimer initialization
120 EmulTimer::instance().init();
123 INLINE hptime_t timer_hw_hpread(void)
125 return EmulTimer::instance().hpread();
128 /** Not needed, timer IRQ handler called only for timer source */
129 #define timer_hw_triggered() (true)