ARM开发——使用MDK5编译一个简单的stm32程序（LED灯闪烁）以及Proteus 51仿真流水灯设计
一、 MDK5编译一个简单的stm32程序（LED灯闪烁）
步骤
1.新建工程
2.新建main.c文件并add进工程里
main.c源代码
```c
//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
}
}
```
3.编译文件
4.stm32仿真编译
二、 Proteus使用51的程序设计和仿真（流水灯）
步骤
1.新建工程
2.选择80c51和LED灯
3.设计仿真电路图
4.编写流水灯代码
```c
#include <reg51.h>
//延迟函数
void delay500ms(void);
void main(void)
{
unsigned char count = 0;
P2 = 0x01;
while(1){
P2 = P2 <<1;
if (P2 == 0x00)
P2 = 0x01;
delay500ms();
}
}
void delay500ms(void){
unsigned char a,b,c;
for(c = 23;c>0;c--)
for(b =152;b>0;b--)
for(a = 70;a>0;a--);
}
```
5.成果展示
