4 * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
5 * This file is part of DevLib - See README.devlib for information.
10 * \author Bernardo Innocenti <bernie@develer.com>
12 * \brief Low-level timer module for Qt emulator (implementation).
17 *#* Revision 1.5 2006/07/19 12:56:26 bernie
18 *#* Convert to new Doxygen style.
20 *#* Revision 1.4 2006/05/28 12:17:57 bernie
21 *#* Drop almost all the Qt3 cruft.
23 *#* Revision 1.3 2006/02/21 21:28:02 bernie
24 *#* New time handling based on TIMER_TICKS_PER_SEC to support slow timers with ticks longer than 1ms.
26 *#* Revision 1.2 2006/02/20 02:01:35 bernie
29 *#* Revision 1.1 2005/11/27 03:06:36 bernie
30 *#* Qt timer emulation.
34 #include <cfg/compiler.h> /* hptime.t */
37 #include <QtCore/QDateTime>
38 #include <QtCore/QTimer>
41 // The user interrupt server routine
46 * Singleton class for Qt-based hardware timer emulation.
48 class EmulTimer : public QObject
53 /// System timer (counts ms since application startup)
56 /// The 1ms "hardware" tick counter.
60 * We deliberately don't use RAII because the real hardware
61 * we're simulating needs to be initialized manually.
65 /// Private ctor (singleton)
66 EmulTimer() : initialized(false) { }
69 /// Return singleton instance
70 static EmulTimer &instance()
76 /// Start timer emulator.
79 // Timer initialized twice?
82 // Record initial time
85 // Activate timer interrupt
86 timer.connect(&timer, SIGNAL(timeout()), this, SLOT(timerInterrupt()));
87 timer.start(1000 / TIMER_TICKS_PER_SEC);
92 /// Return current time in high-precision format.
96 return system_time.elapsed();
100 void timerInterrupt(void)
102 // Just call user interrupt server, timer restarts automatically.
108 #include "timer_qt_moc.cpp"
111 /// HW dependent timer initialization.
112 extern "C" static void timer_hw_init(void)
114 // Kick EmulTimer initialization
115 EmulTimer::instance().init();
118 extern "C" INLINE hptime_t timer_hw_hpread(void)
120 return EmulTimer::instance().hpread();