timer.c File Reference

#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include <log.h>
#include <timer.h>

Include dependency graph for timer.c:

Functions
void	set_timer_count ()
	Set timer count.
uint64_t	get_arch_counter (void)
	Get the architecture-specific counter value.
uint32_t	time_ms (void)
	Get the current time in milliseconds.
uint64_t	time_us (void)
	Get the current time in microseconds.
void	udelay (uint32_t us)
	Delay execution for a specified number of microseconds.
void	mdelay (uint32_t ms)
	Delay execution for a specified number of milliseconds.
void	sdelay (uint32_t loops)
	Delay execution for a specified number of loops (treated as microseconds).
uint32_t	get_init_timestamp ()
	Get the initialization timestamp.

Variables
static uint32_t	init_timestamp = 0

Function Documentation

get_arch_counter()

uint64_t get_arch_counter

(

void

)

Get the architecture-specific counter value.

This function retrieves the current value of the architecture-specific timer counter. The returned value is a 64-bit integer representing the timer's current count.

Returns

Current counter value as a 64-bit integer.

get_init_timestamp()

uint32_t get_init_timestamp

(

)

Get the initialization timestamp.

This function retrieves the initialization timestamp set during the system timer setup.

Returns

The initialization timestamp in microseconds.

mdelay()

void mdelay

(

uint32_t

ms

)

Delay execution for a specified number of milliseconds.

This function converts milliseconds to microseconds and calls the udelay function to implement the delay.

Parameters

ms	Number of milliseconds to delay.

sdelay()

void sdelay

(

uint32_t

loops

)

Delay execution for a specified number of loops (treated as microseconds).

This function creates a delay based on the number of microsecond loops specified, by calling the udelay function directly.

Parameters

loops

Number of microsecond loops to delay.

set_timer_count()

void set_timer_count

(

)

Set timer count.

This function is used to set the count value of the timer.

Note

Before calling this function, timer-related hardware configuration should be initialized.

time_ms()

uint32_t time_ms

(

void

)

Get the current time in milliseconds.

This function calculates the current time based on the architecture counter and returns it in milliseconds.

Returns

Current time in milliseconds.

time_us()

uint64_t time_us

(

void

)

Get the current time in microseconds.

This function calculates the current time based on the architecture counter and returns it in microseconds.

Returns

Current time in microseconds.

udelay()

void udelay

(

uint32_t

us

)

Delay execution for a specified number of microseconds.

This function creates a delay for the specified number of microseconds using a busy-wait loop.

Parameters

us	Number of microseconds to delay.

Variable Documentation

init_timestamp

uint32_t init_timestamp = 0

static