基于gd32f103vk移植RTTHREAD 3.1.2系统

#if 0

#define _SCB_BASE       (0xE000E010UL)

#define _SYSTICK_CTRL   (*(rt_uint32_t *)(_SCB_BASE + 0x0))

#define _SYSTICK_LOAD   (*(rt_uint32_t *)(_SCB_BASE + 0x4))

#define _SYSTICK_VAL    (*(rt_uint32_t *)(_SCB_BASE + 0x8))

#define _SYSTICK_CALIB  (*(rt_uint32_t *)(_SCB_BASE + 0xC))

#define _SYSTICK_PRI    (*(rt_uint8_t  *)(0xE000ED23UL))



// Updates the variable SystemCoreClock and must be called 

// whenever the core clock is changed during program execution.

extern void SystemCoreClockUpdate(void);



// Holds the system core clock, which is the system clock 

// frequency supplied to the SysTick timer and the processor 

// core clock.

extern uint32_t SystemCoreClock;



static uint32_t _SysTick_Config(rt_uint32_t ticks)

{

    if ((ticks - 1) > 0xFFFFFF)

    {

        return 1;

    }

    

    _SYSTICK_LOAD = ticks - 1; 

    _SYSTICK_PRI = 0xFF;

    _SYSTICK_VAL  = 0;

    _SYSTICK_CTRL = 0x07;  

    

    return 0;

}

#endif

#if 0

        /* System Clock Update */

        SystemCoreClockUpdate();

        

        /* System Tick Configuration */

        _SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);

        #endif

        SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);

#ifndef _board_H

#define _board_H



#include "bitband.h"







void rt_hw_board_init(void);

void SysTick_Handler(void);







#endif

//#include "RTE_Components.h"



// <<< Use Configuration Wizard in Context Menu >>>

// <h>Basic Configuration

// <o>Maximal level of thread priority <8-256>

//        <i>Default: 32

#define RT_THREAD_PRIORITY_MAX 32



// <o>OS tick per second

//  <i>Default: 1000   (1ms)

#define RT_TICK_PER_SECOND 1000



// <o>Alignment size for CPU architecture data access

//        <i>Default: 4

#define RT_ALIGN_SIZE 4



// <o>the max length of object name<2-16>

//        <i>Default: 8

#define RT_NAME_MAX 8



// <c1>Using RT-Thread components initialization

//  <i>Using RT-Thread components initialization

#define RT_USING_COMPONENTS_INIT

// </c>



// <c1>Using user main

//  <i>Using user main

#define RT_USING_USER_MAIN

// </c>



// <o>the size of main thread<1-4086>

//        <i>Default: 512

#define RT_MAIN_THREAD_STACK_SIZE 512