STM32L431RC裸机移植RTT完整工程代码.rar

rt-thread,裸机移植的，小熊派stm32l431rc,配合本博客的操作步骤，实操rtt的祼机移植，虽然只是一个内核的移植，但可以帮助理解内核。

/*
 * 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
 */
 
#include 
#include 
#include 
#include “usart.h“

#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;
}

#if defined（RT_USING_USER_MAIN） && defined（RT_USING_HEAP）
#define RT_HEAP_SIZE 1024*10
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（）
{
    /* System Clock Update */
    SystemCoreClockUpdate（）;
      MX_USART1_UART_Init（）;
    /* System Tick Configuration */
    _SysTick_Config（SystemCoreClock / RT_TICK_PER_SECOND）;

    /* 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 rt_hw_console_output（const char *str）
{
 Usart_SendString（（char *）str）;
 printf（“\r\n“）;
}

void SysTick_Handler（void）
{
    /* enter interrupt */
    rt_interrupt_enter（）;

    rt_tick_increase（）;
//printf（“%s“__FUNCTION__）;
    /* leave interrupt */
    rt_interrupt_leave（）;
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       7496  2020-05-27 22:26  STM32L431RC_BearPiUART\.mxproject

     文件       2488  2020-05-28 22:30  STM32L431RC_BearPiUART\Board\board.c

     文件    1149034  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\CMSIS\Device\ST\STM32L4xx\Include\stm32l431xx.h

     文件       7953  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\CMSIS\Device\ST\STM32L4xx\Include\stm32l4xx.h

     文件       2615  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\CMSIS\Device\ST\STM32L4xx\Include\system_stm32l4xx.h

     文件      28208  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\cmsis_armcc.h

     文件      56497  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\cmsis_armclang.h

     文件       9014  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\cmsis_compiler.h

     文件      62344  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\cmsis_gcc.h

     文件      28414  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\cmsis_iccarm.h

     文件       1716  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\cmsis_version.h

     文件      97995  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_armv8mbl.h

     文件     168914  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_armv8mml.h

     文件      42208  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm0.h

     文件      50464  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm0plus.h

     文件      43456  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm1.h

     文件     104628  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm23.h

     文件     111854  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm3.h

     文件     175600  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm33.h

     文件     123607  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm4.h

     文件     148588  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_cm7.h

     文件      47249  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_sc000.h

     文件     110523  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\core_sc300.h

     文件      11711  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\mpu_armv7.h

     文件      10958  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\mpu_armv8.h

     文件       2757  2020-04-22 21:41  STM32L431RC_BearPiUART\Drivers\CMSIS\Include\tz_context.h

     文件     212906  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\STM32L4xx_HAL_Driver\Inc\Legacy\stm32_hal_legacy.h

     文件      34285  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\STM32L4xx_HAL_Driver\Inc\stm32l4xx_hal.h

     文件      18089  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\STM32L4xx_HAL_Driver\Inc\stm32l4xx_hal_cortex.h

     文件       7918  2020-04-22 21:45  STM32L431RC_BearPiUART\Drivers\STM32L4xx_HAL_Driver\Inc\stm32l4xx_hal_def.h

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