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.

This function reads a high-resolution timer counter and ensures that the values are read consistently.

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.

This function returns the timestamp that was set during initialization.

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.

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

This function directly calls udelay with the specified number of loops, which is treated as microseconds.

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.

Set timer count.

This function calls the frequency detection routine and initializes the timestamp based on the current time in microseconds.

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.

This function calculates the current time by dividing the architecture counter value by the current HOSC frequency (in MHz) scaled to 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.

This function calculates the current time by dividing the architecture counter value by the current HOSC frequency (in MHz).

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.

This function uses a busy-wait loop to create a delay for the specified number of microseconds.

Parameters

us	Number of microseconds to delay.

Variable Documentation

init_timestamp

uint32_t init_timestamp = 0

static