单片机实践合集.doc

一、 流水灯1、左移符号的运用#include#define uint unsigned int#define uchar unsigned charsbit dula=P12;sbit wela=P11;uchar temp,tt;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void main()dula=0;wela=0;while(1)temp=0x01;for(tt=0;tt8;tt+)/流水灯P2=temp;/左移为二进制，0左移，故取反delay(500);temp=1;delay(500);P2=0x0;delay(500);P2=0xff;delay(500);P2=0xbb;delay(500);P2=0xff;delay(500);P2=0x55;delay(500);P2=0xff;delay(500);2、左移函数的运用#include#include#define uint unsigned int#define uchar unsigned charsbit dula=P12;sbit wela=P11;uchar temp,i;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void main()temp=0xfe;/流水灯dula=0;wela=0;for(i=0;i500;i+)temp=_crol_(temp,1);/左移函数P2=temp;delay(500); 二、数码管1、 数码管控制#include#define uint unsigned int #define uchar unsigned char sbit LEDLK=P10;sbit dula=P12;sbit wela=P11;uchar num;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void main() wela=1;/开启位选P2=0xf0;wela=0;/锁存数据delay(500); while(1) /while语句可不加for(num=0;num16;num+)dula=1;P2=tablenum;delay(50);/下降沿锁存，由于单片机传输比573快，故延时dula=0;delay(500);2、外部中断0的应用#include#define uint unsigned int #define uchar unsigned char sbit LEDLK=P10;sbit dula=P12;sbit wela=P11;uchar num;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;void delay(uint z);void main()EA=1;/开总中断EX0=1;/开外部中断0/IT0=1;/ 对定时器/计数器控制寄存器控制的位进行控制，外部中断0为边沿触发方式TCON=0x01;/对整个定时器/计数器控制寄存器控制，LEDLK=0;wela=1;/11101010P2=0xf0;wela=0;while(1)for(num=0;num0;x-)for(y=110;y0;y-);void exter0() interrupt 0 /在外部INT0给个低电平即触发，中断启动LEDLK=1;P2=0xfe;/中断时显示一个LED并保持LEDLK=0;3、定时器0的应用#include#include#define uint unsigned int#define uchar unsigned charuchar temp,aa,num;sbit LEDLK=P10;sbit dula=P12;sbit wela=P11;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;void delay(uint z);void main()num=0;aa=0;TMOD=0x01;/定时器模式设定，设定为工作方式1TH0=(65536-50000)/256;/给高地位置数，设定定时时间TL0=(65536-50000)%256;EA=1;ET0=1;/开启定时器0中断TR0=1;/启动定时器0temp=0xfe;LEDLK=1;P2=temp;/点亮第一个LEDdelay(50);LEDLK=0;dula=1;P2=table0;/开启时给数码管显示0dula=0;wela=1;P2=0xf0;/选位wela=0;while(1)delay(1000);temp=_crol_(temp,1);/流水灯定时运行，采用延时程序定时1sLEDLK=1;P2=temp;LEDLK=0;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void timer0() interrupt 1 TH0=(65536-50000)/256;/定时50msTL0=(65536-50000)%256;aa+;if(aa=20)/定时1秒，定时设定，定时器较延时程序精确aa=0;num+;if(num=16)num=0;dula=1;P2=tablenum;/数字显示delay(50);dula=0;三、 按键的应用（消抖出理）#include#define uint unsigned int#define uchar unsigned charsbit d1=P20;sbit rd=P37;sbit LEDLK=P10;sbit dula=P12;sbit wela=P11;sbit key1=P30;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;uchar num;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void main()LEDLK=0;wela=1;P2=0xfe;/选位wela=0;P3=0xff;/开始给键盘赋高电平rd=0;/给key1一端拉地电位while(1)if(key1=0)delay(5);/消按下抖动if(key1=0)/*LEDLK=1;delay(100)d1=0;LEDLK=0;*/num+;if(num=10)num=0;while(!key1);delay(5);/消释放抖动while(!key1);/确保消抖/*elseLEDLK=1;d1=1;LEDLK=0; */dula=1;P2=tablenum;delay(50);dula=0;2、矩阵键盘扫描#include#define uint unsigned int#define uchar unsigned charsbit LEDLK=P10;sbit dula=P12;sbit wela=P11;sbit key1=P30;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0;uchar num,temp,num1;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);uchar keyscan();void display(uchar aa);void main()LEDLK=0;/关闭LED通道num=17;dula=1;P2=0;delay(50);dula=0;wela=1;P2=0xf0;delay(50);wela=0;while(1)display(keyscan();void display(uchar aa)/显示子函数dula=1;P2=tableaa-1;delay(50);dula=0;uchar keyscan()/键盘扫描子程序P3=0xfe;/先扫描第一行，再依次扫描temp=P3;temp=temp&0xf0;/检测是否有键按下，按下必造成0xf0变化while(temp!=0xf0)delay(5);temp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;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)temp=P3;temp=temp&0xf0;P3=0xfd;/扫描第二行temp=P3;temp=temp&0xf0;while(temp!=0xf0)delay(5);temp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;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)temp=P3;temp=temp&0xf0;P3=0xfb;/扫描第三行temp=P3;temp=temp&0xf0;while(temp!=0xf0)delay(5);temp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;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)temp=P3;temp=temp&0xf0;P3=0xf7;/扫描第四行temp=P3;temp=temp&0xf0;while(temp!=0xf0)delay(5);temp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;switch(temp)case 0xe7:num=13;break;case 0xd7:num=14;break;case 0xb7:num=15;break;case 0x77:num=16;break;while(temp!=0xf0)temp=P3;temp=temp&0xf0;return num;/返回扫描值到主函数中aa四、 串口应用#includeunsigned char flag,a;void main()TMOD=0x20;/设置定时器1为工作方式2TH1=0xfd;TL1=0xfd;TR1=1;REN=1;SM0=0;SM1=1;EA=1;ES=1;while(1)/*if(RI=1)RI=0;P1=SBUF;*/if(flag=1)ES=0;flag=0;SBUF=1;/28;while(!TI);TI=0;SBUF=2;/28;while(!TI);TI=0;SBUF=3;/28;while(!TI);TI=0;ES=1;void ser() interrupt 4RI=0;/P1=SBUF;a=SBUF;flag=1;五、 液晶1602应用#include#define uchar unsigned char#define uint unsigned intuchar code table=I LIKE MCU!;uchar code table1=WWW.TXMCU.COM;sbit lcden=P15;sbit lcdrs=P34;sbit LEDLK=P10;sbit dula=P12;sbit wela=P11;uchar num;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void write_com(uchar com)/指令写入子函数lcdrs=0;/开启指令写入，对应时序图软件完成P2=com;delay(5);lcden=1;/使能允许delay(5);/读取指令lcden=0;/关闭指令读取许可void write_data(uchar date)/数据写入子函数lcdrs=1;/开启数据写入P2=date;delay(5);lcden=1;delay(5);/读取数据lcden=0;void init()dula=0;wela=0;lcden=0;/允许指令写入write_com(0x38);/设置16*2的显示write_com(0x0e);/开显示，显光标，不闪烁write_com(0x06); /指针地址加一，光标移动，整屏不移动write_com(0x01);/消除黑点，清屏write_com(0x80+0x10);/第一行写入void main()init();for(num=0;num11;num+)write_data(tablenum);/写入数据delay(20);/write_com(1); /清屏，全消指令write_com(0x80+0x53);/写入第二行for(num=0;num13;num+)write_data(table1num);delay(20);for(num=0;num16;num+)write_com(0x18);/屏幕左移指令delay(20);while(1);2、时钟#include#define uchar unsigned char #define uint unsigned intsbit lcden=P15;sbit lcdrs=P34;sbit LEDLK=P10;sbit dula=P12;sbit wela=P11;sbit s1=P30;sbit s2=P31;sbit s3=P32;sbit rd=P37;uchar count,s1num;char miao,shi,fen;uchar code table= 2007-7-30 MON;uchar code table1= 00:00:00;void delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void write_com(uchar com)lcdrs=0;lcden=0;P2=com;delay(5);lcden=1;delay(5);lcden=0;void write_date(uchar date)lcdrs=1;lcden=0;P2=date;delay(5);lcden=1;delay(5);lcden=0;void init()uchar num;dula=0;wela=0;lcden=0;write_com(0x38);write_com(0x0c);write_com(0x06);write_com(0x01);write_com(0x80);for(num=0;num15;num+)write_date(tablenum);delay(5);write_com(0x80+0x40);for(num=0;num12;num+)write_date(table1num);delay(5);TMOD=0x01;TH0=(65536-50000)/256;/定时50msTL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;void write_sfm(uchar add,uchar date)/写入时分秒uchar shi,ge;shi=date/10;ge=date%10;write_com(0x80+0x40+add);write_date(0x30+shi);write_date(0x30+ge);void keyscan()rd=0;if(s1=0)delay(5);if(s1=0)s1num+;while(!s1);if(s1num=1)TR0=0;write_com(0x80+0x40+10);write_com(0x0f);if(s1num=2)write_com(0x80+0x40+7);if(s1num=3)write_com(0x80+0x40+4);if(s1num=4)s1num=0;write_com(0x0c);TR0=1;if(s1num!=0)if(s2=0)delay(5);if(s2=0)while(!s2);if(s1num=1)miao+;if(miao=60)miao=0;write_sfm(10,miao);write_com(0x80+0x40+10);if(s1num=2)fen+;if(fen=60)fen=0;write_sfm(7,fen);write_com(0x80+0x40+7);if(s1num=3)shi+;if(shi=24)shi=0;write_sfm(4,shi);write_com(0x80+0x40+4);if(s3=0)delay(5);if(s3=0)while(!s3);if(s1num=1)miao-;if(miao=-1)miao=59;write_sfm(10,miao);write_com(0x80+0x40+10);if(s1num=2)fen-;if(fen=-1)fen=59;write_sfm(7,fen);write_com(0x80+0x40+7);if(s1num=3)shi-;if(shi=-1)shi=23;write_sfm(4,shi);write_com(0x80+0x40+4);void main()init();while(1)keyscan();void timer0() interrupt 1TH0=(65536-50000)/256;TL0=(65536-50000)%256;count+;if(count=18)count=0;miao+;if(miao=60)miao=0;fen+;if(fen=60)fen=0;shi+;if(shi=24)shi=0;write_sfm(4,shi);write_sfm(7,fen);write_sfm(10,miao);3、#include#includevoid delay(uint z)uint x,y;for(x=z;x0;x-)for(y=110;y0;y-);void didi() beep=0;delay(50);beep=1;delay(100);beep=0;delay(50);beep=1;void write_com(uchar com)rs=0;lcden=0;P0=com;delay(5);lcden=1;delay(5);lcden=0;void write_date(uchar date)rs=1;lcden=0;P0=date;delay(5);lcden=1;delay(5);lcden=0;void init()uchar num;EA=1;EX0=1;IT0=1;dula=0;wela=0;lcden=0;/set_time();set_alarm(14,13,10);write_ds(0x0B,0x26);read_ds(0x0c);/fen=59;/miao=53;/shi=23;write_com(0x38);write_com(0x0c);write_com(0x06);write_com(0x01);write_com(0x80);for(num=0;num15;num+)write_date(tablenum);delay(5);write_com(0x80+0x40);for(num=0;num12;num+)write_date(table1num);delay(5);void write_sfm(uchar add,uchar date)uchar shi,ge;shi=date/10;ge=date%10;write_com(0x80+0x40+add);write_date(0x30+shi);write_date(0x30+ge);void keyscan()rd=0;if(flag1=1)if(s2=0)delay(5);if(s2=0)while(!s2);flag1=0; if(s3=0)delay(5);if(s3=0)while(!s3);flag1=0; if(s1=0)delay(5);if(s1=0)s1num+;flag=1;flag1=0;while(!s1);if(s1num=1)TR0=0;write_com(0x80+0x40+10);write_com(0x0f);if(s1num=2)write_com(0x80+0x40+7);if(s1num=3)write_com(0x80+0x40+4);if(s1num=4)s1num=0;write_com(0x0c);flag=0;write_ds(0,miao);write_ds(2,fen);write_ds(4,shi);if(s1num!=0)if(s2=0)delay(1);if(s2=0)while(!s2);if(s1num=1)miao+;if(miao=60)miao=0;write_sfm(10,miao);write_com(0x80+0x40+10);if(s1num=2)fen+;if(fen=60)fen=0;write_sfm(7,fen);write_com(0x80+0x40+7);if(s1num=3)shi+;if(shi=24)shi=0;write_sfm(4,shi);write_com(0x80+0x40+4);if(s3=0)delay(1);if(s3=0)while(!s3);if(s1num=1)/*if(miao=0)miao=59;write_sfm(10,miao);write_com(0x80+0x40+10);*/miao-;if(miao=-1)miao=59;write_sfm(10,miao);write_com(0x80+0x40+10);if(s1num=2)fen-;if(fen=-1)fen=59;write_sfm(7,fen);write_com(0x80+0x40+7);if(s1num=