port.h File Reference

Cortex-M3 port API for AKOS. More...

#include <stdint.h>
#include <stddef.h>

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Macros
#define	port_disable_interrupts   { __asm inline("CPSID I \n"); }
#define	port_enable_interrupts   { __asm inline("CPSIE I \n"); }
#define	port_setup_PendSV()
#define	port_trigger_PendSV()
#define	port_SVCHandler
#define	port_PendSVHandler
#define	port_SysTickHandler   SysTick_Handler

Functions
void	akos_port_systick_init_freq (uint32_t cpu_freq)
	Configure 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.

Detailed Description

Cortex-M3 port API for AKOS.

Author

Snoopy3921 - AK Foundation

Date

2026/05/08

Definition in file port.h.

Macro Definition Documentation

port_disable_interrupts

#define port_disable_interrupts   { __asm inline("CPSID I \n"); }

Definition at line 47 of file port.h.

port_enable_interrupts

#define port_enable_interrupts   { __asm inline("CPSIE I \n"); }

Definition at line 48 of file port.h.

port_PendSVHandler

#define port_PendSVHandler

(

void

)

Value:

PendSV_Handler

Definition at line 55 of file port.h.

port_setup_PendSV

#define port_setup_PendSV

(

)

Value:

(*(uint32_t volatile *)0xE000ED20 |= (0xFFU << 16))

Definition at line 51 of file port.h.

port_SVCHandler

#define port_SVCHandler

(

void

)

Value:

SVC_Handler

Definition at line 54 of file port.h.

port_SysTickHandler

#define port_SysTickHandler   SysTick_Handler

Definition at line 56 of file port.h.

port_trigger_PendSV

#define port_trigger_PendSV

(

)

Value:

(*(uint32_t volatile *)0xE000ED04 = (1U << 28))

Definition at line 52 of file port.h.

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

)

Configure SysTick to generate 1ms OS ticks.

Parameters

cpu_freq

Core clock frequency in Hz.

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	Thread argument.

Returns

Initial top-of-stack pointer.

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.