哈工大单片机实验代码张毅刚版教材10个.docx

1、哈工大单片机实验代码张毅刚版教材10个电路图用张毅刚版教材里给的图！ ！1、流水灯#include#includevoid delay()unsigned char i,j;for(i=0;i255;i+)for(j=0;j255;j+);void main()P2=0xfe;while(1)P2=_crol_(P2,1);delay();2、单个外部中断#include#includevoid delay(unsigned char delay_time)unsigned int i,j;for(i=0;i=delay_time;i+)for(j=0;j=100;j+);void init_

2、tx()EA=1;EX0=1;IT0=0;void main()P1=0x00;init_tx();delay(200);while(1)P1=P1;delay(200);void tx0() interrupt 0P1=0xfe;while(!INT0)P1=_crol_(P1,1);delay(200);P1=0xff;3、定时器#includeunsigned char t=20;sbit button=P32;sbit yellowled=P10;/* 定义接口*/void main()TMOD=0x01;/* 选择中断方式*/EA=1;ET0=1;TH0=0x3c;TL0=0x0b;

3、while(button=0)TR0=1;yellowled=1;void tx() interrupt 1TH0=0x3c;TL0=0xb0;t-;if(t=0)yellowled=yellowled;t=20;4、双机串行通信#include#define uchar unsigned char#define uint unsigned int#define outk P1#define out1 P0#define out2 P2uchar code seg=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff; uchar key

4、,send,rec;uchar scan(void);void delay(unit);void main(void)TMOD=0X20;TH1=0XF2;/* 设置定时器 T1 为方式/* 给定时器 T1 赋初值 */2*/TH1=0XF2;TR1=1;/* 接通定时器T1*/SCON=0X50;/* 串行口方式1， REN=1允许接收*/PCON=0X00;/* SMOD=0*/EA=1;ES=1;EX1=1;EX0=1;while(1)outk=0x07;out1=segsend;out2=segrec;uchar scan(void)uchar k=10,m,n,in;delay(10

5、);outk=0x07;if(outk&0x07)!=0x07)for(m=0;m3;m+)outk=(0x01(m+3);for(n=0;nn;if(in&0x01)=0)if(in&0x01)=0)k=n+m*3;break;if(k!=10)break;return(k);void delay(uint j)uchar i;for(;j0;j-)i=250;while(-i);i=249;while(-i);void ext0()interrupt 0EX0=0;key=scan();if(key!=10)send=key+1;EX0=1;void ext1()interrupt 2ES

6、=0;SBUF=send;while(!TI);TI=0;ES=1;void com()interrupt 4RI=0;rec=SBUF;5、单片机与 PC 串行通信#include void send(unsigned char dat)SBUF=dat;while(TI=0);TI=0;void init_tx()EA=1;EX0=1;void delay(void)unsigned char m,n;for(m=0;m250;m+)for(n=0;n250;n+);void main(void)init_tx();TMOD=0x20;SCON=0x40;PCON=0x00;TH1=0xf

7、d;TL1=0xfd;TR1=1;while(1);void tx0() interrupt 0unsigned char i=0;send(0x01);delay();i+;6、扩展 82c55 并行 IO 接口#include#include#define uchar unsigned char#define uint unsigned intsbit rst_8255=P35;#define con_8255 XBYTE0x7003#define pa_8255 XBYTE0x7000#define pb_8255 XBYTE0x7001void reset_8255(void);voi

8、d delay(uint);void main(void)/*0x7003 为 82C55 的控制寄存器地址/* 以下定义 pa、pb 的端口地址 */*/uchar temp;rst_8255=1;delay(1);rst_8255=0;con_8255=0x82;while(1)/* 复位 */temp=pb_8255;pa_8255=temp;/* 锁存 */void delay(uint j)/* 延时函数*/uchar i;for(;j0;j-)i=250;while(-i);i=249;while(-i);7、矩阵键盘#includeunsigned char code table

9、=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e; void delay()unsigned char i,j; （延时）for(i=0;i=25;i+)for(j=0;j=25;j+);unsigned char key_scan()unsigned char key0,key1;unsigned char key_num=0;P1=0x0f; 先将 p1.0P1.3 置高key0=P1;if(key0!=0x0f) 如果 P1.4P1.7 不全为 1，可能有键按下delay();

10、key0=P1;if(key0!=0x0f)P1=0xf0;key1=P1;if(key0=0x0e)switch(key1)case 0xe0: key_num=0;break;case 0xd0: key_num=1;break;case 0xb0: key_num=2;break;case 0x70: key_num=3;break;default: key_num=0;break;else if(key0=0x0d)switch(key1)case 0xe0: key_num=4;break;case 0xd0: key_num=5;break; ( 处理 5 号键 )case 0xb

11、0: key_num=6;break;case 0x70: key_num=7;break;default: key_num=0;break; （无效按键，如多个键同时按下）else if(key0=0x0b)switch(key1)case 0xe0: key_num=8;break;case 0xd0: key_num=9;break;case 0xb0: key_num=10;break;case 0x70: key_num=11;break;default: key_num=0;break;else if(key0=0x07)switch(key1)case 0xe0: key_num

12、=12;break;case 0xd0: key_num=13;break;case 0xb0: key_num=14;break;case 0x70: key_num=15;break;default: key_num=0;break;return key_num;void main()unsigned char key_num;dokey_num=key_scan();P2=tablekey_num;while(1);8、 1602 液晶显示#include#include#define uchar unsigned char#define uint unsigned int#define

13、 out P0sbit RS=P20;sbit RW=P21;sbit E=P22;void lcd_initial(void);void check_busy(void);void write_command(uchar com);void write_data(uchar dat);void string(uchar ad,uchar *s);void lcd_test(void);void delay(uint);void main(void)lcd_initial();while(1)string(0x82,Hello Welcome);string(0xC2,To China);de

14、lay(100);write_command(0x01);delay(100);void delay(uint j)uchar i=250;for(;j0;j-)while(-i);i=249;while(-i);i=250;void check_busy(void)uchar dt;dodt=0xff;E=0;RS=0;RW=1;E=1;dt=out;while(dt&0x80);E=0;void write_command(uchar com)check_busy();E=0;RS=0;RW=0;out=com;E=1;_nop_();E=0;delay(1);void write_dat

15、a(uchar dat)check_busy();E=0;RS=1;RW=0;out=dat;E=1;_nop_();E=0;delay(1);void lcd_initial(void)write_command(0x3c);write_command(0x0C);write_command(0x14);write_command(0x01);delay(1);void string(uchar ad,uchar *s)write_command(ad);while(*s0)write_data(*s+);delay(100);9、 DA 转换#include#define uchar un

16、signed char#define uint unsigned int#define out P1sbit DAC_cs=P20;sbit DAC_wr=P21;void main(void)uchar temp,i=255;while(1)out=temp;DAC_cs=0;DAC_wr=0;/* 片选端，芯片被选中/* 选通，并被锁存 */*/DAC_cs=1;/* 以下开始转换*/DAC_wr=1;temp+;while(-i);/* 延时函数！，老师帮改的*/10、 AD 转换#include#define uchar unsigned char#define uint unsigned int#define LED P0#define out P1sbit start=P21;sbit OE=P27;sbit EOC=P23;sbit CLOCK=P20;sbit add_a=P24;sbit add_b=P25;sbit add_c=P26;void main(void)uchar temp;add_a=0;add_b=0;add_c=0;while(1)start=0;start=1;start=0;while(1)CLOCK=!CLOCK;if(EOC=1)break;OE=1;temp=out;OE=0;LED=temp;