timer.c File Reference

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

#include "timer.h"
#include "hw/hw_timer.h"
#include "cfg/cfg_timer.h"
#include "cfg/cfg_wdt.h"
#include "cfg/cfg_proc.h"
#include "cfg/cfg_signal.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/power.h>
#include <emul/timer_posix.c>
#include <kern/signal.h>
#include <kern/proc.h>
#include <cfg/macros.h>

Go to the source code of this file.

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).

Version:
Id
timer.c 2840 2009-09-01 10:59:17Z batt
Author:
Bernie Innocenti <bernie@codewiz.org>

Definition in file timer.c.

Function Documentation

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 172 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.

Note:
Interrupt safe

Definition at line 126 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 220 of file timer.c.

void timer_delayHp ( hptime_t  delay  ) 

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

Definition at line 248 of file timer.c.