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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

void sys_time_cancel_timer ( tid_t  id)

Cancel a system timer by id.

Parameters
idTimer 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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void sys_time_init ( void  )
tid_t sys_time_register_timer ( float  duration,
sys_time_cb  cb 
)

Register a new system timer.

Parameters
durationDuration in seconds until the timer elapses.
cbCallback 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 init_ap(), init_fbw(), intermcu_init(), main(), main_init(), mavlink_mission_set_timer(), px4flash_event(), and px4flash_init().

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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
timertimer providing start time and duration
offsetoffset in seconds beetween the timers (will overlap if longer than duration)
cbCallback 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, SYS_TIME_NB_TIMER, sys_time_ticks_of_sec(), and sys_time::timer.

Referenced by init_ap(), and main_init().

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void sys_time_update_timer ( tid_t  id,
float  duration 
)

Update the duration until a timer elapses.

Parameters
idTimer id
durationDuration 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

Definition at line 41 of file sys_time.c.