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+);v

2、oid init_tx() EA=1; EX0=1; IT0=0;void main() P1=0x00; init_tx(); delay(200); while(1) P1=P1; delay(200); void tx0() interrupt 0 P1=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=

3、1; ET0=1; TH0=0x3c; TL0=0x0b; while(button=0) TR0=1; yellowled=1;void tx() interrupt 1 TH0=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=0xc0,0xf9,0xa4,0xb0,0x99,0

4、x92,0x82,0xf8,0x80,0x90,0xff;uchar key,send,rec;uchar scan(void);void delay(unit);void main(void) TMOD=0X20; /*设置定时器T1为方式2*/ TH1=0XF2; /*给定时器T1赋初值*/ 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=se

5、grec; uchar scan(void) uchar k=10,m,n,in; delay(10); 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 0

6、EX0=0; key=scan(); if(key!=10)send=key+1; EX0=1;void ext1()interrupt 2 ES=0; SBUF=send; while(!TI); TI=0; ES=1;void com()interrupt 4 RI=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;m

7、250;m+) for(n=0;n250;n+) ;void main(void) init_tx(); TMOD=0x20; SCON=0x40; PCON=0x00; TH1=0xfd; TL1=0xfd; TR1=1; while(1);void tx0() interrupt 0 unsigned 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 co

8、n_8255 XBYTE0x7003 /*0x7003为82C55的控制寄存器地址*/#define pa_8255 XBYTE0x7000 /*以下定义pa、pb的端口地址*/#define pb_8255 XBYTE0x7001void reset_8255(void);void delay(uint);void main(void) uchar temp; rst_8255=1; /*复位*/ delay(1); rst_8255=0; con_8255=0x82; while(1) temp=pb_8255; /*锁存*/ pa_8255=temp; void delay(uint j

9、) /*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=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 key

10、0,key1; unsigned char key_num=0; P1=0x0f; 先将置高 key0=P1; if(key0!=0x0f) 如果不全为1，可能有键按下 delay(); 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;

11、 else if(key0=0x0d) switch(key1) case 0xe0: key_num=4;break; case 0xd0: key_num=5;break; (处理5号键) case 0xb0: 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_nu

12、m=10;break; case 0x70: key_num=11;break; default: key_num=0;break; else if(key0=0x07) switch(key1) case 0xe0: key_num=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; do key_nu

13、m=key_scan(); P2=tablekey_num; while(1); 8、1602液晶显示#include#include#define uchar unsigned char#define uint unsigned int#define 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)

14、;void lcd_test(void);void delay(uint);void main(void) lcd_initial(); while(1) string(0x82,Hello Welcome); string(0xC2,To China); delay(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; do dt=0xff; E=

15、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_data(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(0

16、x0C); 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 unsigned char#define uint unsigned int#define out P1sbit DAC_cs=P20;sbit DAC_wr=P21;void main(void) uchar temp,i=255; while(1

17、) out=temp; DAC_cs=0; /*片选端，芯片被选中*/ DAC_wr=0; /*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;