单片机入门小程序

单片机入门小程序 51单片机的学习是一个动手实践的过程，很多同学在学习单片机的初期总是觉得很难，无法入门。 本人根据自己的学习经历，结合自己刚学习单片机的体验，写下几个小的程序供大家参考，如能掌握如下几个小程序的思想与精髓，那么就已经探踏入了单片机的大门。 学习单片机的核心就是动手实践，当我们通过自己的努力把第一个LED点亮时，我们就会信心加倍，之后的学习就会变得轻松!希望对大家有所帮助。 一个LED闪烁#includesbit led=P03;unsigned inta;void main()P0=0x00;while (1)a=100000;led=1;while(a-);a=10000;led=0;while(a-);两个led闪烁#include#define ucharunsigned char#define uintunsigned intvoid delay();void main()while (1)P0=0xaa;delay();P0=0x00;delay();void delay()uchar x,y;for(x=110;x0;x-)for(y=120;y0;y-);流水灯#include#includevoid delay();void main()unsigned chartemp;P0=0xef;temp=P0;delay();while (1)temp=_crol_(temp,1);delay();void delay()unsigned charx,y;for(x=40;x0;x-)for(y=200;y0;y-);键控移位信号灯#include#include#define ucharunsigned char#define uintunsigd neintsbit k1=P10;sbit k2=P11;void delay(uchar z);void main()P0=0X18;while (1)if(k1)P0=_crol_(P0,1);if(k2)P0=_cror_(P0,1);void delay(uchar z)uchar x,y;for(x=z;x0;x-)for(y=120;y0;y-);中断的简单应用1.利用定时器中断实现LED闪烁#include#define ucharunsigned char#define uintunsigned intsbit led1=P10;uchar num;void main()P1=0x00;TMOD=0x01;TH0=(65536-45872)/265;TL0=(65536-45872)%256;EA=1;ET0=1;TR0=1;while (1);void T0_time()interrupt1TH0=(65536-45872)/256;TL0=(65536-45872)%256;num+;if(num=20)num=0;led1=led1;2.数码管记录LED闪的次数#include#define ucharunsigned char#define uintunsigned intsbit led=P12;void display(uchar,uchar);uchar num=0,num1=0,num2=0,shi=0,ge=0;uchar codearray10=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07;void main()TMOD=0x11;TH0=(65536-45872)/256;TL0=(65536-45872)%256;TH1=(65536-45872)/256;TL1=(65536-45872)%256;EA=1;ET0=1;ET1=1;TR0=1;TR1=1;while (1);display(shi,ge);void display(uchar shi,uchar ge)P2=0x03;/P10=arrayshi;/P11=arrayge;/*void delay(z)uchar x,y;for(x=z;x0;x-)for(y=110;y0;y-);*/void Time0()interrupt1TH0=(65536-45872)/256;TL0=(65536-45872)%256;num+;if(num=4)num=0;led=led;void Time1()interrupt2TH1=(65536-45872)/256;TL1=(65536-45872)%256;num1+;if(num1=20)num1=0;num2+;if(num2=60)num2=0;shi=(num2)/10;ge=(num2)%10;数码管的动态显示#include#define ucharunsigned char#define uintunsigned intuchar codeduan9=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07;void delay();void main()while (1)P2=0x7f;P0=0x3f;delay();P2=0xbf;P0=0x06;delay();P2=0xdf;P0=0x5b;delay();P2=0xef;P0=0x4f;delay();P2=0xf7;P0=0x66;delay();P2=0xfb;P0=0x6d;delay();P2=0xfd;P0=0x7d;delay();P2=0xfe;P0=0x07;delay();void delay()uint x,y;for(x=10;x0;x-)for(y=10;y0;y-);数码管的静态显示#include#define ucharunsigned char#define uintunsigned intuchar codearry10=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;void delay(uint z);void main()P2=0x00;while (1)uchar i;for(i=0;i0;x-)for(y=110;y0;y-);数码管显示8#includevoid main()P2=0x7f;/位选端低电平有效P0=0x7f;/段选高电平有效（共阴）while (1);AD转换#include#include#define ucharunsigned charsbit wr=P36;sbit rd=P37;sbit dula=P26;sbit wela=P27;uchar codeshuma=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;void delay(uchar z)uchar x,y;for(x=z;x0;x-)for(y=110;y0;y-);void display(uchar bai,uchar shi,uchar ge)dula=1;P0=shumabai;dula=0;P0=0xff;wela=1;P0=0x7e;wela=0;delay (10);dula=1;P0=shumashi;dula=0;P0=0xff;wela=1;P0=0x7d;wela=0;delay (10);dula=1;P0=shumage;dula=0;P0=0xff;wela=1;P0=0x7b;wela=0;delay (10);void main()uchar A,B,C,i,adresult;float wela=1;P0=0x7f;/开ADCS wela=0;while (1)wr=1;_nop_();wr=0;_nop_();wr=1;_nop_();for(i=0;i0;x-)for(y=120;y0;y-);void write_data(uchar Data)/写数据lcden=0;lcdrs=1;lcden=1;delay (10);lcd=Data;lcden=0;delay (10);void write_mend(uchar )/写命令lcden=0;lcdrs=0;lcden=1;delay (10);lcd=;lcden=0;delay (10);void initial()/初始化函数、write_mend(0x01);/清屏write_mend(0x38);write_mend(0x0c);write_mend(0x06);void main()uchar i,j;uchar fei=wudian;uchar benfei=jia you!;/lcdrw=0;initial();/while (1);write_mend(0x80);/write_data(f);/write_data(e);/write_data(i);/write_data(f);/write_data(e);/write_data(i);/write_data(f);/write_data(l);for(j=0;j6;j+)write_data(feij);write_mend(0xc2);for(i=0;i0;x-)for(y=120;y0;y-);void write_data(uchar Data)/写数据lcden=0;lcdrs=1;lcden=1;delay (10);lcd=Data;lcden=0;delay (10);void write_mend(uchar )/写命令lcden=0;lcdrs=0;lcden=1;delay (10);lcd=;lcden=0;delay (10);void initial()/初始化函数、write_mend(0x01);/清屏write_mend(0x38);write_mend(0x0c);write_mend(0x06);void main()uchar i,j;uchar fei=wudian;uchar benfei=jia you!;/lcdrw=0;initial();/while (1);write_mend(0x80);/write_data(f);/write_data(e);/write_data(i);/write_data(f);/write_data(e);/write_data(i);/write_data(f);/write_data(l);for(j=0;j6;j+)write_data(feij);write_mend(0xc2);for(i=0;i0;x-)for(y=120;y0;y-);void display(uchar shi,uchar ge);void initial();void main()uchar num=0;initial();csda=0;wr=0;P0=0x00;while (1)wr=0;if(s1=0)delay (10);if(s1=0)num+;P0=shudunum;if(s1=0);delay (10);if(num=4)num=0;P0=0x00;void initial()TMOD=0X01;TH0=0x3c;/50ms TL0=0xb0;EA=1;ET0=1;TR0=1;IT0=1;EX0=1;void T0_time()interrupt1num2+;void INT0_count()interrupt0num1+;if(num2=20)n=num1/k;A2=n/10;A3=n%10;display(A2,