sys_time.c File Reference

Architecture independent timing functions. More...

#include "mcu_periph/sys_time.h"
#include "mcu.h"
#include "limits.h"

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Functions
tid_t	sys_time_register_timer (float duration, sys_time_cb cb)
	Register a new system timer. More...
tid_t	sys_time_register_timer_offset (tid_t timer, float offset, sys_time_cb cb)
	Register a new system timer with an fixed offset from another one. More...
void	sys_time_cancel_timer (tid_t id)
	Cancel a system timer by id. More...
void	sys_time_update_timer (tid_t id, float duration)
	Update the duration until a timer elapses. More...
void	sys_time_init (void)

Variables
struct sys_time	sys_time

Detailed Description

Architecture independent timing functions.

Definition in file sys_time.c.

Function Documentation

sys_time_cancel_timer()

void sys_time_cancel_timer

(

tid_t

id

)

Cancel a system timer by id.

Parameters

id

Timer id.

Definition at line 76 of file sys_time.c.

References sys_time_timer::cb, sys_time_timer::duration, sys_time_timer::elapsed, sys_time_timer::end_time, sys_time_timer::in_use, and sys_time::timer.

Referenced by mavlink_mission_cancel_timer(), and px4flash_event().

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sys_time_init()

void sys_time_init

(

void

)

Definition at line 92 of file sys_time.c.

References sys_time_timer::cb, sys_time_timer::duration, sys_time_timer::elapsed, sys_time_timer::end_time, sys_time_timer::in_use, sys_time::nb_sec, sys_time::nb_sec_rem, sys_time::nb_tick, sys_time::resolution, sys_time_arch_init(), SYS_TIME_FREQUENCY, SYS_TIME_NB_TIMER, sys_time::ticks_per_sec, and sys_time::timer.

Referenced by main(), and mcu_init().

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sys_time_register_timer()

tid_t sys_time_register_timer	(	float	duration,
		sys_time_cb	cb
	)

Register a new system timer.

Parameters

duration	Duration in seconds until the timer elapses.
cb	Callback function that is called from the ISR when timer elapses, or NULL

Returns

-1 if it failed, the timer id otherwise

Definition at line 43 of file sys_time.c.

References sys_time_timer::cb, sys_time_timer::duration, sys_time_timer::elapsed, sys_time_timer::end_time, sys_time_timer::in_use, sys_time::nb_tick, start_time, SYS_TIME_NB_TIMER, sys_time_ticks_of_sec(), and sys_time::timer.

Referenced by intermcu_init(), main(), main_ap_init(), main_fbw_init(), main_init(), main_recovery_init(), mavlink_mission_set_timer(), and px4flash_init().

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sys_time_register_timer_offset()

tid_t sys_time_register_timer_offset	(	tid_t	timer,
		float	offset,
		sys_time_cb	cb
	)

Register a new system timer with an fixed offset from another one.

Parameters

timer	timer providing start time and duration
offset	offset in seconds beetween the timers (will overlap if longer than duration)
cb	Callback function that is called from the ISR when timer elapses, or NULL

Returns

-1 if it failed, the timer id otherwise

Definition at line 59 of file sys_time.c.

References sys_time_timer::cb, sys_time_timer::duration, sys_time_timer::elapsed, sys_time_timer::end_time, sys_time_timer::in_use, offset, SYS_TIME_NB_TIMER, sys_time_ticks_of_sec(), and sys_time::timer.

Referenced by main_ap_init().

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sys_time_update_timer()

void sys_time_update_timer	(	tid_t	id,
		float	duration
	)

Update the duration until a timer elapses.

Parameters

id	Timer id
duration	Duration in seconds until the timer elapses.

Definition at line 86 of file sys_time.c.

References sys_time_timer::duration, sys_time_timer::end_time, sys_time_ticks_of_sec(), and sys_time::timer.

Referenced by mavlink_mission_set_timer().

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Variable Documentation

sys_time

struct sys_time sys_time

Definition at line 1 of file sys_time.c.