X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fdrv%2Ftimer.h;h=a81b96f3dc0e609cfee5ede75c7be6d4776a516f;hb=0af829fd672d0b52f89183042fe535413d046e8d;hp=41f43f655d5cc191201fd0c7c8fa1736d334c965;hpb=9d38debd0d2b2eaeeeec7f82d7c39e749ac729e5;p=bertos.git diff --git a/bertos/drv/timer.h b/bertos/drv/timer.h index 41f43f65..a81b96f3 100644 --- a/bertos/drv/timer.h +++ b/bertos/drv/timer.h @@ -30,10 +30,23 @@ * Copyright 2000, 2008 Bernie Innocenti * --> * - * \brief Hardware independent timer driver (interface) + * \brief Hardware independent timer driver. + * + * All timer related functions are implemented in this module. You have several options to use timers: + * \li simple delay: just use timer_delay() if you want to wait for a few milliseconds; + * \li delay with callback: create a timer structure and use timer_setDelay() and timer_setSoftint() to set the callback; + * \li delay with signal: same as above but use timer_setSignal() to set specify which signal to send. + * + * Whenever a timer expires you need to explicitly arm it again with timer_add(). If you want to abort a timer, use timer_abort(). + * You can use conversion macros when using msecs to specify the delay. * * \version $Id$ * \author Bernie Innocenti + * + * $WIZ$ module_name = "timer" + * $WIZ$ module_configuration = "bertos/cfg/cfg_timer.h" + * $WIZ$ module_depends = "event", "sysirq" + * $WIZ$ module_supports = "not atmega103 and not atmega8" */ #ifndef DRV_TIMER_H @@ -51,7 +64,8 @@ * Try the CPU specific one for bare-metal environments. */ #if OS_HOSTED - #include OS_HEADER(timer) + //#include OS_HEADER(timer) + #include #else #include CPU_HEADER(timer) #endif @@ -106,6 +120,7 @@ extern volatile ticks_t _clock; * \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. + * \sa timer_delay() */ INLINE ticks_t timer_clock(void) { @@ -197,6 +212,12 @@ INLINE utime_t hptime_to_us(hptime_t hpticks) } void timer_delayTicks(ticks_t delay); +/** + * Wait some time [ms]. + * + * \note CPU is released while waiting so you don't have to call cpu_relax() explicitly. + * \param delay Time to wait [ms]. + */ INLINE void timer_delay(mtime_t delay) { timer_delayTicks(ms_to_ticks(delay)); @@ -238,7 +259,7 @@ typedef struct Timer DB(uint16_t magic;) } Timer; -/** Timer is active when Timer.magic contains this value (for debugging purposes). */ +/* Timer is active when Timer.magic contains this value (for debugging purposes). */ #define TIMER_MAGIC_ACTIVE 0xABBA #define TIMER_MAGIC_INACTIVE 0xBAAB @@ -248,12 +269,9 @@ Timer *timer_abort(Timer *timer); /** Set the timer so that it calls an user hook when it expires */ INLINE void timer_setSoftint(Timer *timer, Hook func, iptr_t user_data) { - event_initSoftInt(&timer->expire, func, user_data); + event_initSoftint(&timer->expire, func, user_data); } -// OBSOLETE -#define timer_set_event_softint timer_setSoftint - /** Set the timer delay (the time before the event will be triggered) */ INLINE void timer_setDelay(Timer *timer, ticks_t delay) {