timer.h File Reference

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Detailed Description

Interface for Timer functions.

This module is inspired by Jörg Wunschs timer implementation, which can be found here: http://sax.sax.de/~joerg/avr-timer/

Definition in file timer.h.

Go to the source code of this file.

Data Structures
struct	time_stamp_tag
Defines
#define	MSEC(v)   ((time_t)(v / (1.0e3 * TIMER_TICK)))
#define	NONE_TIMER   (0)
#define	USEC(v)   ((time_t)(v / (1.0e6 * TIMER_TICK)))
Typedefs
typedef struct time_stamp_tag	time_stamp_t
typedef uint32_t	time_t
typedef uint32_t	timer_arg_t
typedef time_t(	timer_handler_t )(timer_arg_t p)
typedef uint16_t	timer_hdl_t
Functions
void	timer_get_tstamp (time_stamp_t *ts)
void	timer_init (void)
	Initialization of the timer module.
timer_hdl_t	timer_restart (timer_hdl_t th, time_t duration)
	Restarting a running timer.
void	timer_set_systime (time_t sec)
	Set the current system time given in seconds since 1.1.1970.
timer_hdl_t	timer_start (timer_handler_t *thfunc, time_t duration, timer_arg_t arg)
	Start a timer with a given handler function.
timer_hdl_t	timer_stop (timer_hdl_t th)
	Stop a running timer.
time_t	timer_systime (void)
	Return the current system time in ticks.

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Define Documentation

#define NONE_TIMER   (0)

Symbolic name for invalid timer handle

Definition at line 104 of file timer.h.

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Function Documentation

void timer_get_tstamp

(

time_stamp_t *

ts

)

Function that returns the internal system time counters as "libpcap" compatible time stamp.

Note:

This routine takes ~548 cycles for execution. In case of a 8Mhz driven system, this is a 68.5 us.

Parameters:

ts

timestamp data structure