port.c File Reference

Cortex-M3 port implementation (context switching and tick hook). More...

#include "port.h"
#include "thread.h"
#include "core.h"
#include "config.h"
#include "core_cm3.h"
#include "core_cmFunc.h"

Include dependency graph for port.c:

Go to the source code of this file.

Functions
void	akos_port_systick_init_freq (uint32_t cpu_freq)
	Initialize SysTick to generate 1ms OS ticks.
void	akos_port_start_first_task (void)
	Start the first thread by restoring the initial exception context.
uint32_t *	akos_port_task_stack_init (uint32_t *p_stack, size_t stack_size, void(*pf_task)(void *), void *p_arg)
	Build the initial Cortex-M thread stack frame.
void	port_SVCHandler (void)
	SVC handler used to restore the first thread context.
void	port_PendSVHandler (void)
	PendSV handler used for context switching between threads.
void	port_SysTickHandler ()
	SysTick ISR hook for scheduler tick updates.

Detailed Description

Cortex-M3 port implementation (context switching and tick hook).

Author

Snoopy3921 - AK Foundation

Date

2026/05/08

Definition in file port.c.

Function Documentation

akos_port_start_first_task()

void akos_port_start_first_task

(

void

)

Start the first thread by restoring the initial exception context.

Definition at line 42 of file port.c.

akos_port_systick_init_freq()

void akos_port_systick_init_freq

(

uint32_t

cpu_freq

)

Initialize SysTick to generate 1ms OS ticks.

Configure SysTick to generate 1ms OS ticks.

Parameters

cpu_freq

Core clock frequency in Hz.

Definition at line 25 of file port.c.

akos_port_task_stack_init()

uint32_t * akos_port_task_stack_init	(	uint32_t *	p_stack,
		size_t	stack_size,
		void(*	pf_task )(void *),
		void *	p_arg )

Build the initial Cortex-M thread stack frame.

Parameters

p_stack	Base stack buffer.
stack_size	Stack size in 32-bit words.
pf_task	Thread entry function.
p_arg	Task argument.

Returns

Initial top-of-stack pointer.

Definition at line 67 of file port.c.

port_PendSVHandler()

void port_PendSVHandler

(

void

)

PendSV handler used for context switching between threads.

Definition at line 119 of file port.c.

port_SVCHandler()

void port_SVCHandler

(

void

)

SVC handler used to restore the first thread context.

Definition at line 94 of file port.c.

port_SysTickHandler()

void port_SysTickHandler

(

)

SysTick ISR hook for scheduler tick updates.

Definition at line 161 of file port.c.