单片机程序源代码

1、第二章任务一：闪烁广告灯的设计利用89c51单片机的端口控制两个LED（D0和D1），编写程序，实现两个LED互闪。 #include<reg52.h> #define uint unsigned int #define uchar unsigned char sbit LED1=P00; sbit LED2=P01; void delayms(uint ms) uint i;while(ms-)for(i=0;i<120;i+); void main() while(1)LED1=0;LED2=1;delayms(500);LED1=1;LED2=0;delayms(500

2、); 任务二：流水广告灯的设计利用89c51单片机的端口控制8个LED（D0D7）循环点亮，刚开始时D0点亮，延时片刻后，接着D1点亮，然后依次点亮D2->D3->D4->D5 ->D6->D7 ，然后再点亮D7->D6->D5->D4 ->D3->D2->D1->D0，重复循环。#include<reg52.h>#include <intrins.h>#define uint unsigned int#define uchar unsigned charuint i;uchar temp;uint

3、 a8=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;void delayms(uint ms) while(ms-) uint j; for(j=0;j<120;j+); void main() while(1) P0=0xfe; while(P0!=0x7f) /P1=temp; /delayms(500); P0=_crol_(P0,1); delayms(250); temp=0x7f; while(P0!=0xfe) P0=temp; delayms(500); temp=_cror_(temp,1); 任务三：拉幕式与闭幕式广告灯的设计利用8

4、9c51单片机的P0端口实现8个LED D0D7的拉幕式与闭幕式广告灯设计。拉幕式： 开始D0D7全灭，延时片刻后首先D3和D4亮，其次是 D2和D5亮，再是D1和D6亮，最后是D0和D7亮。闭幕式：开始D0D7全亮，延时片刻后首先D0和D7灭，其次是 D1和D6灭，再是D2和D5灭，最后是D3和D4灭。#include<reg52.h>#define uint unsigned int#define uchar unsigned charuchar code table=0xe7,0xc3,0x81,0x00;void delay(uint x)uint i,j;for(i=x;

5、i>0;i-)for(j=120;j>0;j-);void main()uint i;while(1)P1=0xff;delay(500);for(i=0;i<4;i+)P1=tablei;delay(500);for(i=3;i>0;i-)P1=tablei-1;delay(500);任务四：复杂广告灯的设计利用89c51单片机的端口实现8个LED（D0D7）复杂广告灯的控制，要求显示规律为：正向流水->反向流水->隔灯闪烁3次->高四盏、低四盏闪烁2次->隔两盏闪烁3次，再重复循环。 #include<reg52.h> #defi

6、ne uint unsigned int #include<intrins.h> void delayms(uint ms) uint i;while(ms-) for(i=0;i<110;i+); void main() uint i,j,xx2=0xaa,0xff,yy2=0xf0,0x0f,zz2=0xb6,0xff;unsigned char aa; while(1) aa=0xfe; for(i=0;i<7;i+) P0=aa; aa=_crol_(aa,1); delayms(500); for(i=0;i<8;i+) P0=aa; aa=_cror_

7、(aa,1); delayms(500); for(i=0;i<3;i+) for(j=0;j<2;j+) P0=xxj; delayms(500); for(i=0;i<2;i+) for(j=0;j<2;j+) P0=yyj ; delayms(500); for(i=0;i<3;i+) for(j=0;j<2;j+) P0=zzj ; delayms(500); 任务五：单个LED数码管显示设计使用89c51的P0口作为输出口，外接LED数码管，编写程序，使数码管循环显示从09的加1计数。#include<reg52.h> #define

8、uint unsigned int #define uchar unsigned char uchar table10= 0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90;uint key=0;void int_int()EA=1;IT0=1;EX0=1;void count_num() interrupt 0if(key=9)key=0;else key+;void main()int_int();while(1)P0=tablekey;任务六：多个LED数码管显示设计使用单片机P0和P2口作为输出口，外接一个8位LED数码管，编写程序，使数

9、码管显示“872AF635”。#include<reg52.h>#include<intrins.h>#define uint unsigned int#define uchar unsigned chardelay(ms) while(ms-) int i; for(i=0;i<110;i+); main() uchar a16=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;uchar b8=0x08,0x07,0x02,0x0a,0x0f,0x06

10、,0x03,0x05,j;uint i; while(1) j=0x01; for(i=0;i<8;i+) P2=j; P0=abi;j=_crol_(j,1);delay(3); 任务七：查询式按键设计将8个按键从18进行编号，如果其中一个键被按下，则在LED数码管上显示相应的键值。#include<reg52.h>#define uint unsigned int#define uchar unsigned charmain() uchar a16=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0x

11、c6,0xa1,0x86,0x8e;P0=0xff;while(P0!=0xff) switch(P0)case 0xfe:P2=a1; break;case 0xfd:P2=a2; break;case 0xfb:P2=a3; break;case 0xf7:P2=a4; break;case 0xef:P2=a5; break;case 0xdf:P2=a6; break;case 0xbf:P2=a7; break;case 0x7f:P2=a8; 任务八：LED数码管显示矩阵键盘按键的设计设计一个4*4的矩阵键盘，以P1.0P1.3作为行线，以P1.4P1.7作为列线。要求：未按下按键

12、时，LED数码管显示“-”，按下按键时，在数码管上显示相应的键值。#include<reg52.h>#define uchar unsigned char#define uint unsigned intuchar table17=0xbf,0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;uint num=0;void delay(uint x)uchar i,j;for(i=x;i>0;i-)for(j=120;j>0;j-);keyscan() uint

13、temp; temp=P2; temp&=0x0f; if(temp=0x0e) P2=0xf0; temp=P2; temp&=0xf0; switch(temp) case 0xe0:num=1;break; case 0xd0:num=2;break; case 0xb0:num=3;break; case 0x70:num=4; if(temp=0x0d) P2=0xf0; temp=P2; temp&=0xf0; switch(temp) case 0xe0:num=5;break; case 0xd0:num=6;break; case 0xb0:num=7

14、;break; case 0x70:num=8; if(temp=0x0b) P2=0xf0; temp=P2; temp&=0xf0; switch(temp) case 0xe0:num=9;break; case 0xd0:num=10;break; case 0xb0:num=11;break; case 0x70:num=12; if(temp=0x07) P2=0xf0; temp=P2; temp&=0xf0; switch(temp) case 0xe0:num=13;break; case 0xd0:num=14;break; case 0xb0:num=15

15、;break; case 0x70:num=16; return num;void display(uint num)if(num=0) P0=0xbf; P0=tablenum ;main() uint temp; while(1) P2=0x0f; temp=P2; if(temp!=0x0f) keyscan(); display(num); （2）#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit LED1=P20;sbit LED2=P21;uchar num;uchar co

16、de LED_code=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;/数码管字形码编码void delay(uint x)uchar i,j;for(i=x;i>0;i-)for(j=120;j>0;j-);/延时函数void display(uchar num)P0=LED_codenum;/数码管显示函数void keyscan()/键盘扫描函数uchar temp;P1=0xfe;/key1-key4第一行按下temp=P1;temp&=0xf0;if(

17、temp!=0xf0)delay(10);/消除抖动temp=P1;temp&=0xf0;if(temp!=0xf0)temp=P1;switch(temp)case 0xee:num=1;break;case 0xde:num=2;break;case 0xbe:num=3;break;case 0x7e:num=4;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;P1=0xfd;/key5-key8第二行按下temp=P1;temp&=0xf0;if(temp!=0xf0)delay(10);/消除抖动temp=P1

18、;temp&=0xf0;if(temp!=0xf0)temp=P1;switch(temp)case 0xed:num=5;break;case 0xdd:num=6;break;case 0xbd:num=7;break;case 0x7d:num=8;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;P1=0xfb;/key9-key12第三行按下temp=P1;temp&=0xf0;if(temp!=0xf0)delay(10);/消除抖动temp=P1;temp&=0xf0;if(temp!=0xf0)te

19、mp=P1;switch(temp)case 0xeb:num=9;break;case 0xdb:num=10;break;case 0xbb:num=11;break;case 0x7b:num=12;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;P1=0xf7;/key13-key16第四行按下temp=P1;temp&=0xf0;if(temp!=0xf0)delay(10);/消除抖动temp=P1;temp&=0xf0;if(temp!=0xf0)temp=P1;switch(temp)case 0xe7:

20、num=13;break;case 0xd7:num=14;break;case 0xb7:num=15;break;case 0x77:num=16;break;while(temp!=0xf0)/等待按键释放temp=P1;temp&=0xf0;void main()while(1)keyscan();if(num=0)P0=0xbf;elsedisplay(num-1);任务九：简单拨号键盘的设计使用4*4的矩阵式键盘及8位共阳极LED数码管设计一个简单拨号键盘，要求在初始状态时，8位数码管均显示“-”，每按下一个号码后，原8位LED数码管显示的内容向左移动1位。#include

21、<reg52.h>#include<intrins.h>#define uint unsigned int #define uchar unsigned charuchar keycount=0,num;uchar code LED1_code=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;/数码管字形码编码uchar LED2_duan8=0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf,0xbf;/8段共阳数码管编码uchar LED

22、2_wei8= 0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01;void delay(uint x)uchar i,j;for(i=x;i>0;i-)for(j=120;j>0;j-);void display()uchar i;/P2=0x80;for(i=0;i<8;i+)P2=LED2_weii;P0=LED2_duan7-i;delay(1);void keyscan()uchar temp;P3=0xfe;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=

23、0xf0;if(temp!=0xf0)temp=P3;switch(temp)case 0xee:keycount+;num=0;break;case 0xde:keycount+;num=1;break;case 0xbe:keycount+;num=2;break;case 0x7e:keycount+;num=3;break;while(temp!=0xf0)temp=P3;temp&=0xf0;P3=0xfd;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(temp!=0xf0)t

24、emp=P3;switch(temp)case 0xed:keycount+;num=4;break;case 0xdd:keycount+;num=5;break;case 0xbd:keycount+;num=6;break;case 0x7d:keycount+;num=7;break;while(temp!=0xf0)temp=P3;temp&=0xf0;P3=0xfb;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(temp!=0xf0)temp=P3;switch(temp)c

25、ase 0xeb:keycount+;num=8;break;case 0xdb:keycount+;num=9;break;case 0xbb:keycount+;num=10;break;case 0x7b:keycount+;num=11;break;while(temp!=0xf0)temp=P3;temp&=0xf0;P3=0xf7;temp=P3;temp&=0xf0;if(temp!=0xf0)delay(10);temp=P3;temp&=0xf0;if(temp!=0xf0)temp=P3;switch(temp)case 0xe7:keycount+

26、;num=12;break;case 0xd7:keycount+;num=13;break;case 0xb7:keycount+;num=14;break;case 0x77:keycount+;num=15;break;while(temp!=0xf0)temp=P3;temp&=0xf0;void main()uchar i;while(1)display();keyscan();if(keycount!=0)for(i=0;i<7;i+)LED2_duani=LED2_duani+1;LED2_duan7=LED1_codenum;keycount=0;第五章任务一：带

27、中断控制的LED花样灯P0端口作为输出口，外接8只LED，P3.2外接按键K。编写程序，当K未按下时，8只LED进行默认显示，其显示规律为左移流水->右移流水->隔灯闪烁3次花样显示；如果按下K键后，8只LED暂停默认显示，而进行闪烁显示，当显示达到5次后，继续按默认规律显示。 #include<reg52.h> #define uint unsigned int #define uchar unsigned char uint LED_table14=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xbf,0xdf,0xef,0xf7

28、,0xfb,0xfd; void delayms(uint ms) uint i;while(ms-)for(i=0;i<120;i+); void int_int() EA=1;EX0=1;IT0=1; void LED_shan() interrupt 0 uint k;for(k=0;k<5;k+)P0=0xaa;delayms(500);P0=0xff;delayms(500); void main() int_int();while(1) uint i;for(i=0;i<14;i+)P0=LED_tablei;delayms(500);for(i=0;i<3

29、;i+)P0=0xaa;delayms(500);P0=0xff;delayms(500); 任务二：采用外中断控制的条形LED彩灯设计P0端口作为输出口，外接条形LED。编写程序，当按键K未按下时，LED进行循环左移显示。如果第1次按下按键K后，LED进行循环右移显示。如果第2次按下按键K后，LED进行拉幕式与闭幕式花样显示。如果第3次按下按键K后，又恢复循环左移显示。#include <reg52.h>unsigned char flag=0;/状态标志位unsigned char led =0;/LED映射位unsigned char table=/花样数组0x00,0x81

30、,0xc3,0xe7,0xff,0xe7,0xc3,0x81;/先闭幕式再开幕式void delayms(unsigned int ms);/延时函数void sysInit(void);/系统初始化void step0(void);/状态0void step1(void);/状态1void step2(void);/状态2void main(void)sysInit();/初始化系统while(1)switch(flag)case 0:step0();break;case 1:step1();break;case 2:step2();break;default:break;P0 = led;

31、/将led值映射到LED灯delayms(500);/延时500msvoid delayms(unsigned int ms)unsigned char i;for (;ms;ms-)for (i=110;i;i-);void sysInit(void)EX0 = 1;/打开外部中断0EA = 1;/打开总中断IT0 = 1;/外部中断0下降沿触发void step0(void)led <<=1;/左移if (led=0)/溢出处理led = 0x01;void step1(void)led >>=1;/右移if (led=0)/溢出处理led = 0x80;void

32、step2(void)static char t;led = tablet+;/开幕闭幕花样显示if (t=8)t = 0;void EX_0() interrupt 0/外部中断0服务函数flag+;if (flag=3)flag = 0;（2）#include<reg52.h>/头文件#define uchar unsigned char#define uint unsigned int /宏定义uchar temp,key_count;uchar code tab= /开幕式闭幕式编码0x00,0x81,0xc3,0xe7,0xff,0xe7,0xc3,0x81;void d

33、elay(uint ms) /延时子函数uint i,j;for(i=ms;i>0;i-)for(j=0;j<110;j+);void loop_leftmove()temp=temp<<1;if(temp=0)temp=0x01;void loop_rightmove()temp=temp>>1;if(temp=0)temp=0x80;void open_close()uchar count;temp=tabcount;count+;if(count>=8)count=0;void init()EA=1;EX0=1;IT0=1;temp=0;key_

34、count=0;void main()init();while(1)switch(key_count)case 0:loop_leftmove();break;case 1:loop_rightmove();break;case 2:open_close();break;default:break;P0=temp;delay(250);void key_interrupt() interrupt 0/外部中断INT0中断服务程序key_count+;key_count%=3;/*if(key_count=3)key_count=0;*/任务三：采用两个外中断的LED彩灯控制P0端口作为输出口，

35、外接8只LED，P3.2外接按键K1，P3.3外接按键K2。编写程序，没有按下任何按键时，LED隔灯闪烁，当按键K1为奇数次时，LED进行左移流水->右移流水显示。当按下按键K1为偶数次时，LED进行拉幕式显示；当按下按键K2时，LED暂停显示，蜂鸣器发出“叮咚”的开门声音，然后LED继续花样显示（K2按键优先）。#include<reg52.h>#include<intrins.h>#define uchar unsigned char#define uint unsigned intsbit key1=P32;sbit key2=P33;sbit beep=P

36、10;uchar code tab=0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7;/开幕式编码uchar temp=0x01,key_count,flag,right,beep_FG;void delay(uint ms)uint i,j;for(i=ms;i>0;i-)for(j=110;j>0;j-);void init()EA=1;/打开总中断EX0=1;/打开外部中断INT0EX1=1;/打开外部中断INT1IT0=1;/下降沿触发方式IT1=1;/下降沿触发方式PX0=0;/设置INT0为低中断优先级PX1=1;/设置INT1为高中断优先

37、级void interval_LED()P0=0xff;delay(500);P0=0xaa;delay(500);void left_right_move()if(!right)temp=_crol_(temp,1);elsetemp=_cror_(temp,1);if(temp=0x01)right=0;if(temp=0x80)right=1;void open_LED()uchar count;temp=tabcount+;if(count=8)count=0;void Beep()uchar i,j,k;for(i=100;i;i-)for(j=20;j;j-)for(k=1000;

38、k;k-)beep=beep;/*for(i=100;i;i-)for(j=200;j;j-)for(k=1000;k;k-)beep=beep;*/beep_FG=0;void main()init();beep=0;while(1)if(!flag)interval_LED();else if(beep_FG)Beep();elseswitch(key_count%2)case 1:left_right_move();break;/奇数次按键左移右移显示case 0:open_LED();break;/偶数次按键拉幕式显示default:break;P0=temp;delay(400);v

39、oid key1_interrupt() interrupt 0flag=1;key_count+;void key2_interrupt() interrupt 2flag=1;beep_FG=1;任务四：采用两个外中断实现LED键控移位P0端口作为输出口，外接8只LED，P3.2外接按键K1，P3.3外接按键K2。编写程序，要求实现LED键控移位，按下按键K1时，8只LED左移1位；按下按键K2时，8只LED右移1位。#include<reg52.h>#include<intrins.h>#define uint unsigned int#define uchar

40、unsigned charuchar key1=0,key2=0,temp1=0,temp2=0,temp11=0,temp12=0;/*void delayms(uint ms)uint i;while(ms-)for(i=0;i<120;i+); */void int_int()EA=1;EX0=1;EX1=1;IT0=1;IT1=1;void int0() interrupt 0key1+;void int1() interrupt 2key2+;void main()uchar a;int_int();a=0xfe;while(1) if(temp1!=key1)P0 = a;a

41、=_crol_(a,1);temp1=key1;if(temp2!=key2)P0 = a;a=_cror_(a,1);key2=temp2;（2）#include<reg52.h>#define uint unsigned int#define uchar unsigned charuchar key1=0,key2=0,m,n,k;uchar table=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;void int_int() EA=1; EX0=1; IT0=1;EX1=1;IT1=1;void int0() interrupt 0key1

42、+;m=key1%8;void int2() interrupt 2key2+;n=key2%8;void main()int_int();while(1)k=(m-n+8)%8;P0=tablek; 任务五：采用外中断实现计数使用单片机P0、P2端口作为输出口，外接一个2位LED数码管，P3.2外接按键K1，P3.3外接按键K2。编写程序，每次按下K1时，LED数码管进行加1显示；每次按下按键K2时，LED数码管进行减1显示，计数范围为099。#include<reg52.h>/头文件#define uint unsigned int /宏定义#define uchar unsi

43、gned char /宏定义uchar table=0xc0,0xf9,0xa4,0xb0,0x99, 0x92,0x82,0xf8,0x80,0x90;/0-9共阳字型码编码char count=0;uchar shi,ge;void LED_scan()/数码管扫描子函数shi=count/10;/分离十位ge=count%10;/分离个位P2=tablege;/显示个位P0=tableshi;/显示十位void int_int() /初始化EA=1;/打开总中断EX0=1;/打开外部中断0EX1=1;/打开外部中断1IT0=1;/设置下降沿触发方式IT1=1;/设置下降沿触发方式void

44、 main()/主函数int_int(); /调用初始化函数while(1)LED_scan();/调用数码管扫描函数void int0() interrupt 0/外部中断0服务程序count+; /计数加1if(count=100) /溢出操作count=0;void int2() interrupt 2/外部中断1服务程序count-;/计数减1if(count<0) /溢出操作count=99;（2）#include<reg52.h>/头文件#define uint unsigned int /宏定义#define uchar unsigned char /宏定义uc

45、har table=0xc0,0xf9,0xa4,0xb0,0x99, 0x92,0x82,0xf8,0x80,0x90;/0-9共阳字型码编码char count=0;uchar shi,ge;void delay(uint ms)/延时子函数uchar i;for(;ms;ms-)for(i=120;i;i-);void LED_scan()/数码管扫描子函数shi=count/10;/分离十位ge=count%10;/分离个位P2=0x01;/个位对应的数码管点亮P0=tablege;/显示个位delay(1);P2=0x02;/十位对应的数码管点亮P0=tableshi;/显示十位delay(1);void int_int() /初始化EA=1;/打开总中断EX0=1;/打开外部中断0EX1=1;/打开外部中断1I