AudioTimerDriverZephyr Class Reference

Repeating Timer driver for Zephyr using k_timer. More...

#include <AudioTimerZephyr.h>

Inheritance diagram for AudioTimerDriverZephyr:

Public Member Functions
	AudioTimerDriverZephyr ()=default
	~AudioTimerDriverZephyr ()
bool	begin (repeating_timer_callback_t callback_f, uint32_t time, TimeUnit unit=MS) override
	Starts the repeating timer.
void *	callbackParameter ()
bool	end () override
	Stops the timer.
void	setCallbackParameter (void *obj)
void	setIsSave (bool is_save) override
	Sets whether timer callbacks should be safe (execute in thread context)
virtual void	setTimer (int timer)
void	setTimerFunction (TimerFunction function) override
	Sets the callback execution mode.

Protected Member Functions
void	executeCallback ()
const char *	toString (TimeUnit unit)

Static Protected Member Functions
static void	timerExpiredCallback (struct k_timer *timer_ptr)
static void	workCallback (k_work *work_ptr)

Protected Attributes
repeating_timer_callback_t	callback = nullptr
bool	is_running = false
void *	object = nullptr
uint64_t	period_us = 0
struct k_timer	timer = {}
TimerFunction	timer_function = DirectTimerCallback
bool	timer_initialized = false
struct k_work	work = {}

Detailed Description

Repeating Timer driver for Zephyr using k_timer.

Author

Phil Schatzmann

Copyright

GPLv3

Implements AudioTimerDriverBase using Zephyr's kernel timer API (k_timer). Supports both callback-based and thread-based execution modes.

Characteristics:

• Supports US / MS / HZ time specifications
• Uses k_timer_init() and k_timer_start() for efficient scheduling
• Defers callback execution to system workqueue when TimerCallbackInThread mode is set
• Precision limited by Zephyr's kernel tick resolution

Constructor & Destructor Documentation

AudioTimerDriverZephyr()

AudioTimerDriverZephyr ( )

default

~AudioTimerDriverZephyr()

~AudioTimerDriverZephyr ( )

inline

Member Function Documentation

begin()

bool begin ( repeating_timer_callback_t  callback_f, uint32_t  time, TimeUnit  unit = MS  )

inlineoverridevirtual

Starts the repeating timer.

Implements AudioTimerDriverBase.

callbackParameter()

void * callbackParameter ( )

inlineinherited

end()

bool end ( )

inlineoverridevirtual

Stops the timer.

Reimplemented from AudioTimerDriverBase.

executeCallback()

void executeCallback ( )

inlineprotected

setCallbackParameter()

void setCallbackParameter ( void *  obj )

inlineinherited

setIsSave()

void setIsSave ( bool  is_save )

inlineoverridevirtual

Sets whether timer callbacks should be safe (execute in thread context)

Reimplemented from AudioTimerDriverBase.

setTimer()

virtual void setTimer ( int  timer )

inlinevirtualinherited

Reimplemented in AudioTimerDriverRenesas, and AudioTimerDriverSTM32.

setTimerFunction()

void setTimerFunction ( TimerFunction  function )

inlineoverridevirtual

Sets the callback execution mode.

Reimplemented from AudioTimerDriverBase.

timerExpiredCallback()

static void timerExpiredCallback ( struct k_timer *  timer_ptr )

inlinestaticprotected

Static callback wrapper for k_timer This is invoked in interrupt context, so we either call directly or defer to system workqueue.

toString()

const char * toString ( TimeUnit  unit )

inlineprotectedinherited

workCallback()

static void workCallback ( k_work *  work_ptr )

inlinestaticprotected

Member Data Documentation

callback

repeating_timer_callback_t callback = nullptr

protected

is_running

bool is_running = false

protected

object

void* object = nullptr

protectedinherited

period_us

uint64_t period_us = 0

protected

timer

struct k_timer timer = {}

protected

timer_function

TimerFunction timer_function = DirectTimerCallback

protected

timer_initialized

bool timer_initialized = false

protected

work

struct k_work work = {}

protected

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The documentation for this class was generated from the following file:

• src/AudioTools/CoreAudio/AudioTimer/AudioTimerZephyr.h