timer.c File Reference

Hardware independent timer driver (implementation). More...

#include "timer.h"
#include "cfg/cfg_timer.h"
#include "cfg/cfg_wdt.h"
#include "cfg/cfg_kern.h"
#include <cfg/os.h>
#include <cfg/debug.h>
#include <cfg/module.h>
#include <cpu/attr.h>
#include <cpu/types.h>
#include <cpu/irq.h>
#include <CPU_CSOURCE(timer)>
#include <kern/signal.h>
#include <kern/proc.h>
#include <cfg/macros.h>


Functions
void	timer_add (Timer *timer)
	Add the specified timer to the software timer service queue.
Timer *	timer_abort (Timer *timer)
	Remove a timer from the timers queue before it has expired.
void	timer_delayTicks (ticks_t delay)
	Wait for the specified amount of timer ticks.
void	timer_busyWait (hptime_t delay)
	Busy wait until the specified amount of high-precision ticks have elapsed.
void	timer_delayHp (hptime_t delay)
	Wait for the specified amount of time (expressed in microseconds).
Variables
volatile ticks_t	_clock
	Master system clock (1 tick accuracy).
static REGISTER List	timers_queue
	List of active asynchronous timers.

Detailed Description

Hardware independent timer driver (implementation).

Definition in file timer.c.

Timer* timer_abort ( Timer * timer )

Remove a timer from the timers queue before it has expired.

Note:: Attempting to remove a timer already expired cause undefined behaviour.

Definition at line 166 of file timer.c.

void timer_add ( Timer * timer )

Add the specified timer to the software timer service queue.

When the delay indicated by the timer expires, the timer device will execute the event associated with it.

Definition at line 120 of file timer.c.

void timer_busyWait ( hptime_t delay )

Busy wait until the specified amount of high-precision ticks have elapsed.

Note:: This function is interrupt safe, the only requirement is a running hardware timer.

Definition at line 218 of file timer.c.

void timer_delayHp ( hptime_t delay )

Wait for the specified amount of time (expressed in microseconds).

Definition at line 246 of file timer.c.