ARM开发环境入门

一、任务描述二、STM32的简单程序的编译：LED闪烁三、利用Proteus 的51程序设计和仿真

一、任务描述

安装mdk5软件和stm32包，熟悉mdk开发环境，完成一个stm32的简单程序的编译。安装过程可参考网上或者“STM32底座实验指导书”第1章。示例程序可以参考网上代码，或者“STM32底座实验指导书”第3章的“LED闪烁”。（注意，没有硬件之前，只能做程序的编译和仿真测试，无法下载到硬件上运行）

安装并熟悉Proteus 电路仿真软件，完成一个51程序设计和仿真。

二、STM32的简单程序的编译：LED闪烁

2.1 打开Keil5，创建新的工程LED

2.2 打开新的文本，输入如下代码（此处代码为网上参考所得），并保存为LED.C。

#define PERIPH_BASE ((unsigned int)0x40000000) #define APB2PERIPH_BASE (PERIPH_BASE + 0x10000) #define GPIOA_BASE (APB2PERIPH_BASE + 0x0800) #define GPIOB_BASE (APB2PERIPH_BASE + 0x0C00) #define GPIOC_BASE (APB2PERIPH_BASE + 0x1000) #define GPIOD_BASE (APB2PERIPH_BASE + 0x1400) #define GPIOE_BASE (APB2PERIPH_BASE + 0x1800) #define GPIOF_BASE (APB2PERIPH_BASE + 0x1C00) #define GPIOG_BASE (APB2PERIPH_BASE + 0x2000) #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 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) 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; #define GPIOA ((GPIO_TypeDef *)GPIOA_BASE) void LEDInit( void )//???? { RCC->APB2ENR|=1<<2; //GPIOA ???? GPIOA->CRH&=0XFFFFFFF0; GPIOA->CRH|=0X00000003; } //???? 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; Delay_ms(500); LED0=1; Delay_ms(500); } }

2.3 右键“Source Group 1” 选择“Add Existing Files to Group …”， 2.4在弹出的窗口中选择LED.C，单击“ADD”，把刚才编写的代码文本加入该工程中。

2.5 编译 2.6 仿真测试

三、利用Proteus 的51程序设计和仿真

3.1 打开Proteus8 新建工程。 3.2 搭建仿真电路图。 3.3 打开Keil5 新建文本编写所需代码。

#include<reg51.h> #define uchar unsigned char #define uint unsigned int sbit rs=P1^0; sbit rw=P1^1; sbit e=P1^2; sbit FMQ=P2^3; unsigned char year=20,month=4,day=25,week=5,sec=55,min=59,hour=7; unsigned char DL_hour1=8; unsigned char DL_min1=0; unsigned char DL_hour2=8; unsigned char DL_min2=45; unsigned char DL_hour3=8; unsigned char DL_min3=55; unsigned char DL_hour4=9; unsigned char DL_min4=40; unsigned char DL_hour5=10; unsigned char DL_min5=10; unsigned char DL_hour6=10; unsigned char DL_min6=55; unsigned char DL_hour7=11; unsigned char DL_min7=5; unsigned char DL_hour8=11; unsigned char DL_min8=50; unsigned char DL_hour9=14; unsigned char DL_min9=0; unsigned char DL_hour10=14; unsigned char DL_min10=40; unsigned char DL_hour11=14; unsigned char DL_min11=55; unsigned char DL_hour12=15; unsigned char DL_min12=40; unsigned char DL_hour13=16; unsigned char DL_min13=10; unsigned char DL_hour14=16; unsigned char DL_min14=55; unsigned char DL_hour15=17; unsigned char DL_min15=5; unsigned char DL_hour16=17; unsigned char DL_min16=50; void LCD_YANSHI(unsigned int i) { while(i--); } void Lcd1602_W_C(unsigned char c) { LCD_YANSHI(500); rs=0; rw=0; e=0; P0=c; e=1; LCD_YANSHI(10); e=0; } void Lcd1602_W_D(unsigned char dat) { LCD_YANSHI(500); rs=1; rw=0; e=0; P0=dat; e=1; LCD_YANSHI(10); e=0; rs=0; } void Lcd1602_Init() { LCD_YANSHI(500); Lcd1602_W_C(0x38); Lcd1602_W_C(0x06); Lcd1602_W_C(0x0c); Lcd1602_W_C(0x01); } void DISPLAY(); void Timer_INIT(); void main() { Lcd1602_Init(); Timer_INIT(); while(1) { DISPLAY(); } } void Timer_INIT() { TMOD = 0x01; //Ñ¡Ôñ¹¤×÷·½Ê½1 TH0=0Xfc; TL0=0X18; //1ms EA = 1; //´ò¿ª×ÜÖÐ¶Ï ET0 = 1; //´ò¿ª¶¨Ê±Æ÷0ÖÐ¶Ï TR0 = 1; //Æô¶¯¶¨Ê±Æ÷0 } void DISPLAY() { Lcd1602_W_C(0x80+3); Lcd1602_W_D('2'); Lcd1602_W_D('0'); Lcd1602_W_D('0'+year/10); Lcd1602_W_D('0'+year%10); Lcd1602_W_D('/'); Lcd1602_W_D('0'+month/10); Lcd1602_W_D('0'+month%10); Lcd1602_W_D('/'); Lcd1602_W_D('0'+day/10); Lcd1602_W_D('0'+day%10); Lcd1602_W_C(0xC0+4); Lcd1602_W_D('0'+hour/10); Lcd1602_W_D('0'+hour%10); Lcd1602_W_D(':'); Lcd1602_W_D('0'+min/10); Lcd1602_W_D('0'+min%10); Lcd1602_W_D(':'); Lcd1602_W_D('0'+sec/10); Lcd1602_W_D('0'+sec%10); } void time0() interrupt 1 { static unsigned int j; TH0=0Xfc; TL0=0X18; //1ms j++; if(j==1000) //1s { j=0; sec++; if(sec==60) //ÃëÂú60ÇåÁã { sec=0; min++; if(min==60) //·ÖÂú60ÇåÁã { min=0; hour++; if(hour==24) { hour=0; day++; week++; if(week>7) { week=0; } if(((month==1)||(month==3)||(month==5)||(month==7)||(month==8)||(month==10)||(month==12)) &&(day==32) ) { day=1; month++; if(month==13) { year++; month=0; } } if(((month==4)||(month==6)||(month==9)||(month==11)) &&(day==31) ) { day=1; month++; } if((((year%4)==0)&&(month==2)) &&(day==30) ) { day=1; month++; } if((((year%4)!=0)&&(month==2)) &&(day==29) ) { day=1; month++; } } } } if((((hour==DL_hour1)&&(min==DL_min1))|| ((hour==DL_hour2)&&(min==DL_min2))|| ((hour==DL_hour3)&&(min==DL_min3))|| ((hour==DL_hour4)&&(min==DL_min4))|| ((hour==DL_hour5)&&(min==DL_min5))|| ((hour==DL_hour6)&&(min==DL_min6))|| ((hour==DL_hour7)&&(min==DL_min7))|| ((hour==DL_hour8)&&(min==DL_min8))|| ((hour==DL_hour9)&&(min==DL_min9))|| ((hour==DL_hour10)&&(min==DL_min10))|| ((hour==DL_hour11)&&(min==DL_min11))|| ((hour==DL_hour12)&&(min==DL_min12))|| ((hour==DL_hour13)&&(min==DL_min13))|| ((hour==DL_hour14)&&(min==DL_min14))|| ((hour==DL_hour15)&&(min==DL_min15))|| ((hour==DL_hour16)&&(min==DL_min16)))&&(week<=5)) { FMQ=0; } else { FMQ=1; } } }

3.4 编译该代码，如果成功会生成bell3.hex文件。 3.5 在Proteus8中双击芯片，在Program File选项中浏览选择bell.hex。 3.6 开始电路图的仿真运行。 根据实验结果可以看出，该电路图及控制代码达到了目的：8:00时响铃一分钟。