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29 * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
34 * \author Bernie Innocenti <bernie@codewiz.org>
36 * \brief Low-level timer module for Qt emulator (implementation).
38 #include <cfg/compiler.h> /* hptime.t */
41 #include <QtCore/QDateTime>
42 #include <QtCore/QTimer>
49 // The user interrupt server routine
54 * Singleton class for Qt-based hardware timer emulation.
56 class EmulTimer : public QObject
61 /// System timer (counts ms since application startup)
64 /// The 1ms "hardware" tick counter.
68 * We deliberately don't use RAII because the real hardware
69 * we're simulating needs to be initialized manually.
73 /// Private ctor (singleton)
74 EmulTimer() : initialized(false) { }
77 /// Return singleton instance
78 static EmulTimer &instance()
84 /// Start timer emulator.
87 // Timer initialized twice?
90 // Record initial time
94 irq_register(SIGALRM, timer_isr);
97 // Activate timer interrupt
98 connect(&timer, SIGNAL(timeout()), SLOT(timerInterrupt()));
99 timer.start(1000 / TIMER_TICKS_PER_SEC);
106 // Timer cleaned twice?
115 /// Return current time in high-precision format.
119 return system_time.elapsed();
123 void timerInterrupt(void)
125 // Just call user interrupt server, timer restarts automatically.
135 #include "timer_qt_moc.cpp"
138 /// HW dependent timer initialization.
139 static void timer_hw_init(void)
141 EmulTimer::instance().init();
144 static void timer_hw_cleanup(void)
146 EmulTimer::instance().cleanup();
149 INLINE hptime_t timer_hw_hpread(void)
151 return EmulTimer::instance().hpread();
154 /** Not needed, timer IRQ handler called only for timer source */
155 #define timer_hw_triggered() (true)