mdk第一次工程文件建立使用

工具：mdk5
步骤：

最后就是新建自己的入口函数，写自己的代码



下面是网上一段代码：

//宏定义，用于存放stm32寄存器映射
#define PERIPH_BASE           ((unsigned int)0x40000000)//AHB
#define APB2PERIPH_BASE       (PERIPH_BASE + 0x10000)
#define GPIOA_BASE            (APB2PERIPH_BASE + 0x0800)
//GPIOA_BASE=0x40000000+0x10000+0x0800=0x40010800，该地址为GPIOA的基地址
#define GPIOB_BASE            (APB2PERIPH_BASE + 0x0C00)
//GPIOB_BASE=0x40000000+0x10000+0x0C00=0x40010C00，该地址为GPIOB的基地址
#define GPIOC_BASE            (APB2PERIPH_BASE + 0x1000)
//GPIOC_BASE=0x40000000+0x10000+0x1000=0x40011000，该地址为GPIOC的基地址
#define GPIOD_BASE            (APB2PERIPH_BASE + 0x1400)
//GPIOD_BASE=0x40000000+0x10000+0x1400=0x40011400，该地址为GPIOD的基地址
#define GPIOE_BASE            (APB2PERIPH_BASE + 0x1800)
//GPIOE_BASE=0x40000000+0x10000+0x0800=0x40011800，该地址为GPIOE的基地址
#define GPIOF_BASE            (APB2PERIPH_BASE + 0x1C00)
//GPIOF_BASE=0x40000000+0x10000+0x0800=0x40011C00，该地址为GPIOF的基地址
#define GPIOG_BASE            (APB2PERIPH_BASE + 0x2000)
//GPIOG_BASE=0x40000000+0x10000+0x0800=0x40012000，该地址为GPIOG的基地址
#define GPIOA_ODR_Addr    (GPIOA_BASE+12) //0x4001080C
#define GPIOB_ODR_Addr    (GPIOB_BASE+12) //0x40010C0C
#define GPIOC_ODR_Addr    (GPIOC_BASE+12) //0x4001100C
#define GPIOD_ODR_Addr    (GPIOD_BASE+12) //0x4001140C
#define GPIOE_ODR_Addr    (GPIOE_BASE+12) //0x4001180C
#define GPIOF_ODR_Addr    (GPIOF_BASE+12) //0x40011A0C   
#define GPIOG_ODR_Addr    (GPIOG_BASE+12) //0x40011E0C 
 
#define BITBAND(addr, bitnum) ((addr & 0xF0000000)+0x2000000+((addr &0xFFFFF)<<5)+(bitnum<<2))
#define MEM_ADDR(addr)  *((volatile unsigned long  *)(addr))
 
 #define LED0  MEM_ADDR(BITBAND(GPIOA_ODR_Addr,8))
//#define LED0 *((volatile unsigned long *)(0x422101a0)) //PA8
//定义typedef类型别名
typedef  struct
{
   volatile  unsigned  int  CR;
   volatile  unsigned  int  CFGR;
   volatile  unsigned  int  CIR;
   volatile  unsigned  int  APB2RSTR;
   volatile  unsigned  int  APB1RSTR;
   volatile  unsigned  int  AHBENR;
   volatile  unsigned  int  APB2ENR;
   volatile  unsigned  int  APB1ENR;
   volatile  unsigned  int  BDCR;
   volatile  unsigned  int  CSR;
} RCC_TypeDef;
 
#define RCC ((RCC_TypeDef *)0x40021000)
//定义typedef类型别名
typedef  struct
{
volatile  unsigned  int  CRL;
volatile  unsigned  int  CRH;
volatile  unsigned  int  IDR;
volatile  unsigned  int  ODR;
volatile  unsigned  int  BSRR;
volatile  unsigned  int  BRR;
volatile  unsigned  int  LCKR;
} GPIO_TypeDef;
//GPIOA指向地址GPIOA_BASE,GPIOA_BASE地址存放的数据类型为GPIO_TypeDef
#define GPIOA ((GPIO_TypeDef *)GPIOA_BASE)
 
void  LEDInit( void )
{
     RCC->APB2ENR|=1<<2;  //GPIOA 时钟开启
     GPIOA->CRH&=0XFFFFFFF0;
     GPIOA->CRH|=0X00000003; 
}
 
//粗略延时
void  Delay_ms( volatile  unsigned  int  t)
{
     unsigned  int  i,n;
     for (n=0;n<t;n++)
         for (i=0;i<800;i++);
}

int main(void)
{
	 LEDInit();
     while (1)
     {
         LED0=0;//LED熄灭
         Delay_ms(500);//延时时间
         LED0=1;//LED亮
         Delay_ms(500);//延时时间
     }
}

总结：

本人使用mdk现在也是一知半解，知其然不知其所以然，中途也遇到很多问题，网上很多这些教程，而且很全面，只是自己在stm32方面知识储备量不够，对很多专业术语和模块不了解，看不太懂那些教程，最后采取了这种取巧的方法。希望后续能真正认识stm32.