[单片机芯片] 【沁恒CH579评测】移植RT-Thread到CH579上

/*

 * Copyright (c) 2006-2019, RT-Thread Development Team

 *

 * SPDX-License-Identifier: Apache-2.0

 *

 * Change Logs:

 * Date           Author       Notes

 * 2017-07-24     Tanek        the first version

 * 2018-11-12     Ernest Chen  modify copyright

 */

<font color="Red">#include "board.h" //自己新建board.h文件</font>

#include <stdint.h>

#include <rthw.h>

#include <rtthread.h>

<font color="Orange">//红色部分注释掉</font>

<font color="Red">#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</font>



#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)

#define RT_HEAP_SIZE 1024

static uint32_t rt_heap[RT_HEAP_SIZE];     // heap default size: 4K(1024 * 4)

RT_WEAK void *rt_heap_begin_get(void)

{

    return rt_heap;

}



RT_WEAK void *rt_heap_end_get(void)

{

    return rt_heap + RT_HEAP_SIZE;

}

#endif



/**

 * This function will initial your board.

 */

void rt_hw_board_init()

{

<font color="Red">#if 0        //注释掉红色的部分

    /* System Clock Update */

    SystemCoreClockUpdate();

    

    /* System Tick Configuration */

    _SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);

#endif</font>

                <font color="Blue">SystemInit();//初始化系统时钟为32M        

                SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);

        

                led_init();//led端口初始化</font>

                //R32_PB_OUT&=~(1<<1);

        //while(1);

        

    /* Call components board initial (use INIT_BOARD_EXPORT()) */

#ifdef RT_USING_COMPONENTS_INIT

    rt_components_board_init();

#endif



#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)

    rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());

#endif

}



void SysTick_Handler(void)

{

    /* enter interrupt */

    rt_interrupt_enter();



    rt_tick_increase();



    /* leave interrupt */

    rt_interrupt_leave();

}

#ifndef __BOARD_H__

#define __BOARD_H__





#include "CH57x_common.h"

#include "gpio.h"

#define SystemCoreClock        32000000

#endif

#include "CH57x_common.h"

#include "gpio.h"

#include "touch_key.h"

#include "uart.h"



#include "board.h"

#include "rtthread.h"



int main(void)

{

        

}