fm33lc移植nano在delay卡死，

发布于 2022-02-12 20:22:13 浏览：919 订阅该版

```c
/*
 * Copyright (c) 2006-2019, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2021-05-24                  the first version
 */

#include <stdint.h>
#include <rthw.h>
#include <rtthread.h>
#include "main.h"
#include "bsp_pll.h"

extern uint32_t SystemCoreClock;

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)
/*
 * Please modify RT_HEAP_SIZE if you enable RT_USING_HEAP
 * the RT_HEAP_SIZE max value = (sram size - ZI size), 1024 means 1024 bytes
 */
#define RT_HEAP_SIZE (2*1024)
static rt_uint8_t rt_heap[RT_HEAP_SIZE];

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

void rt_os_tick_callback(void)
{
    rt_interrupt_enter();
    
    rt_tick_increase();

rt_interrupt_leave();
}

/* SysTick configuration */
static void rt_hw_systick_init(void)
{
    SysTick_Config( SystemCoreClock/ RT_TICK_PER_SECOND);

SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk | SysTick_CTRL_ENABLE_Msk;
    NVIC_SetPriority(SysTick_IRQn, 0xFF);
}

/**
 * This function will initial your board.
 */
void rt_hw_board_init(void)
{
//#error "TODO 1: OS Tick Configuration."
    /* 
     * TODO 1: OS Tick Configuration
     * Enable the hardware timer and call the rt_os_tick_callback function
     * periodically with the frequency RT_TICK_PER_SECOND. 
     */
	MF_Clock_Init();
	SelRCHFToPLL(FL_RCC_RCHF_FREQUENCY_8MHZ, 64 - 1); // 设置系统主频为64MHz
	SystemCoreClockUpdate();	//更新SystemCoreClock变量值

rt_hw_systick_init();
    /* 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();
}

#ifdef RT_USING_CONSOLE

static int uart_init(void)
{
#error "TODO 2: Enable the hardware uart and config baudrate."
    return 0;
}
INIT_BOARD_EXPORT(uart_init);

void rt_hw_console_output(const char *str)
{
#error "TODO 3: Output the string 'str' through the uart."
}

#endif
```