X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=drv%2Ftimer.h;h=9e3e2b30f282d47944d0a24ed524d81e5e177973;hb=HEAD;hp=c78bee39eeb2886e32e0efe52e82d18b368b6b90;hpb=0c1c0408909a3d03a32435bdb3662ee1634d251e;p=bertos.git diff --git a/drv/timer.h b/drv/timer.h deleted file mode 100755 index c78bee39..00000000 --- a/drv/timer.h +++ /dev/null @@ -1,295 +0,0 @@ -/*! - * \file - * - * - * \version $Id$ - * - * \author Bernardo Innocenti - * - * \brief Hardware independent timer driver (interface) - */ - -/*#* - *#* $Log$ - *#* Revision 1.28 2006/02/17 22:24:21 bernie - *#* Update POSIX timer emulator. - *#* - *#* Revision 1.27 2005/11/27 03:04:19 bernie - *#* Move test code to timer_test.c; Add OS_HOSTED support. - *#* - *#* Revision 1.26 2005/11/04 16:20:02 bernie - *#* Fix reference to README.devlib in header. - *#* - *#* Revision 1.25 2005/07/19 07:26:37 bernie - *#* Refactor to decouple timer ticks from milliseconds. - *#* - *#* Revision 1.24 2005/04/11 19:10:28 bernie - *#* Include top-level headers from cfg/ subdir. - *#* - *#* Revision 1.23 2005/03/01 23:25:46 bernie - *#* Move event.h to mware/. - *#* - *#* Revision 1.22 2004/12/13 12:07:06 bernie - *#* DISABLE_IRQSAVE/ENABLE_IRQRESTORE: Convert to IRQ_SAVE_DISABLE/IRQ_RESTORE. - *#* - *#* Revision 1.21 2004/12/09 08:35:21 bernie - *#* Replace IPTR with iptr_t. - *#* - *#* Revision 1.20 2004/12/08 08:56:41 bernie - *#* Rename sigset_t to sigmask_t; Reformat. - *#* - *#* Revision 1.19 2004/12/08 08:30:37 bernie - *#* Convert to mtime_t; timer_minutes(): Remove. - *#* - *#* Revision 1.18 2004/11/16 23:09:52 bernie - *#* Disable timer_minutes() for targets with 16bit time_t. - *#* - *#* Revision 1.17 2004/11/16 22:37:14 bernie - *#* Replace IPTR with iptr_t. - *#* - *#* Revision 1.16 2004/08/25 14:12:08 rasky - *#* Aggiornato il comment block dei log RCS - *#* - *#* Revision 1.15 2004/08/10 06:59:09 bernie - *#* timer_gettick(): Rename to timer_ticks() and add backwards compatibility inline. - *#* - *#* Revision 1.12 2004/07/30 14:34:10 rasky - *#* Vari fix per documentazione e commenti - *#* Aggiunte PP_CATn e STATIC_ASSERT - *#* - *#* Revision 1.11 2004/07/29 22:40:12 bernie - *#* Spelling fix. - *#* - *#* Revision 1.10 2004/07/21 00:13:57 bernie - *#* Put timer driver on diet. - *#* - *#* Revision 1.9 2004/07/20 23:45:01 bernie - *#* Finally remove redundant protos. - *#* - *#* Revision 1.8 2004/07/18 21:57:32 bernie - *#* timer_gettick(): Rename to timer_tick() and document better. - *#* - *#* Revision 1.7 2004/06/27 15:26:17 aleph - *#* Declaration fix for build with GCC 3.4 - *#* - *#* Revision 1.6 2004/06/07 18:10:06 aleph - *#* Remove free pool of timers; use user-provided Timer structure instead - *#* - *#* Revision 1.5 2004/06/07 15:57:12 aleph - *#* Add function prototypes - *#* - *#* Revision 1.4 2004/06/06 18:25:44 bernie - *#* Rename event macros to look like regular functions. - *#* - *#* Revision 1.3 2004/06/06 16:57:18 bernie - *#* Mark some functions INLINE instead of 'extern inline'. - *#* - *#* Revision 1.2 2004/06/03 11:27:09 bernie - *#* Add dual-license information. - *#* - *#* Revision 1.1 2004/05/23 18:23:30 bernie - *#* Import drv/timer module. - *#* - *#*/ -#ifndef DRV_TIMER_H -#define DRV_TIMER_H - -#include -#include - -/* - * Include platform-specific binding header if we're hosted. - * Try the CPU specific one for bare-metal environments. - */ -#if OS_HOSTED - #include OS_HEADER(timer) -#else - #include CPU_HEADER(timer) -#endif - -#include -#include -#include -#include - -/*! Number of timer ticks per second. */ -#define TIMER_TICKS_PER_SEC (TIMER_TICKS_PER_MSEC * 1000) - -/*! Number of ticks per microsecond */ -#define TIMER_TICKS_PER_USEC ((TIMER_TICKS_PER_MSEC + 500) / 1000) - - -extern volatile ticks_t _clock; - -/*! - * \brief Return the system tick counter (expressed in ticks) - * - * The result is guaranteed to increment monotonically, - * but client code must be tolerant with respect to overflows. - * - * The following code is safe: - * - * \code - * ticks_t tea_start_time = timer_clock(); - * - * boil_water(); - * - * if (timer_clock() - tea_start_time > TEAPOT_DELAY) - * printf("Your tea, Sir.\n"); - * \endcode - * - * \note This function must disable interrupts on 8/16bit CPUs because the - * clock variable is larger than the processor word size and can't - * be copied atomically. - */ -INLINE ticks_t timer_clock(void) -{ - ticks_t result; - - ATOMIC(result = _clock); - - return result; -} - -/*! - * Faster version of timer_clock(), to be called only when the timer - * interrupt is disabled (DISABLE_INTS) or overridden by a - * higher-priority or non-nesting interrupt. - * - * \sa timer_ticks - */ -INLINE ticks_t timer_clock_unlocked(void) -{ - return _clock; -} - - - -//TODO: take care of slow timers so add convertions for seconds to ticks and viceversa. - -/*! Convert \a ms [ms] to ticks */ -INLINE ticks_t ms_to_ticks(mtime_t ms) -{ - return ms * TIMER_TICKS_PER_MSEC; -} - -/*! Convert \a us [us] to ticks */ -INLINE ticks_t us_to_ticks(utime_t us) -{ -#if TIMER_TICKS_PER_MSEC < 10000 - return (us * TIMER_TICKS_PER_MSEC + 500) / 1000; -#else - return (us * TIMER_TICKS_PER_USEC); -#endif -} - -/*! Convert \a ticks [ticks] to ms */ -INLINE mtime_t ticks_to_ms(ticks_t ticks) -{ - return (ticks + TIMER_TICKS_PER_MSEC / 2) / TIMER_TICKS_PER_MSEC; -} - -/*! Convert \a ticks [ticks] to us */ -INLINE utime_t ticks_to_us(ticks_t ticks) -{ -#if TIMER_TICKS_PER_USEC > 10 - return (ticks / TIMER_TICKS_PER_USEC); -#else - return (ticks * 1000 + TIMER_TICKS_PER_MSEC / 2) / TIMER_TICKS_PER_MSEC; -#endif -} - -/*! Convert \a us [us] to hpticks */ -INLINE hptime_t us_to_hptime(utime_t us) -{ - #if TIMER_HW_HPTICKS_PER_SEC > 10000000UL - return(us * ((TIMER_HW_HPTICKS_PER_SEC + 500000UL) / 1000000UL)); - #else - return((us * TIMER_HW_HPTICKS_PER_SEC + 500000UL) / 1000000UL); - #endif /* TIMER_HW_HPTICKS_PER_SEC > 10000000UL */ -} - -/*! Convert \a hpticks [hptime] to usec */ -INLINE utime_t hptime_to_us(hptime_t hpticks) -{ - #if TIMER_HW_HPTICKS_PER_SEC < 100000UL - return(hpticks * (1000000UL / TIMER_HW_HPTICKS_PER_SEC)); - #else - return((hpticks * 1000000UL) / TIMER_HW_HPTICKS_PER_SEC); - #endif /* TIMER_HW_HPTICKS_PER_SEC < 100000UL */ -} - - -void timer_init(void); -void timer_delayTicks(ticks_t delay); -INLINE void timer_delay(mtime_t delay) -{ - timer_delayTicks(ms_to_ticks(delay)); -} - -#if !defined(CONFIG_TIMER_DISABLE_UDELAY) -void timer_busyWait(hptime_t delay); -void timer_delayHp(hptime_t delay); -INLINE void timer_udelay(utime_t delay) -{ - timer_delayHp(us_to_hptime(delay)); -} -#endif - -#ifndef CONFIG_TIMER_DISABLE_EVENTS - -#include - -/*! - * The timer driver supports multiple synchronous timers - * that can trigger an event when they expire. - * - * \sa timer_add() - * \sa timer_abort() - */ -typedef struct Timer -{ - Node link; /*!< Link into timers queue */ - ticks_t _delay; /*!< Timer delay in ms */ - ticks_t tick; /*!< Timer will expire at this tick */ - Event expire; /*!< Event to execute when the timer expires */ - DB(uint16_t magic;) -} Timer; - -/*! Timer is active when Timer.magic contains this value (for debugging purposes). */ -#define TIMER_MAGIC_ACTIVE 0xABBA -#define TIMER_MAGIC_INACTIVE 0xBAAB - -extern void timer_add(Timer *timer); -extern Timer *timer_abort(Timer *timer); - -/*! Set the timer so that it calls an user hook when it expires */ -INLINE void timer_set_event_softint(Timer *timer, Hook func, iptr_t user_data) -{ - event_initSoftInt(&timer->expire, func, user_data); -} - -/*! Set the timer delay (the time before the event will be triggered) */ -INLINE void timer_setDelay(Timer *timer, ticks_t delay) -{ - timer->_delay = delay; -} - -#endif /* CONFIG_TIMER_DISABLE_EVENTS */ - -#if defined(CONFIG_KERN_SIGNALS) && CONFIG_KERN_SIGNALS - -/*! Set the timer so that it sends a signal when it expires */ -INLINE void timer_set_event_signal(Timer *timer, struct Process *proc, sigmask_t sigs) -{ - event_initSignal(&timer->expire, proc, sigs); -} - -#endif /* CONFIG_KERN_SIGNALS */ - - -#endif /* DRV_TIMER_H */