單片機(jī)C語言LED燈點(diǎn)亮程序完全版

1例子1第二個(gè)燈亮#iiiclude<reg52.h>voidmain(){Pl=0xfd;}#iiiclude<reg52.h>SbitDl=PlAO；Voidmam(){Dl=0)注意：稍微改程序時(shí)需重新hex化例子2第一個(gè)燈亮#include<reg52.h>〃52單片機(jī)頭文件sbitledl=Plz0; 〃單片機(jī)管腳位聲明voidmain() 〃主函數(shù)(led1=0; //將單片機(jī)PL0口清零wlnle(l);〃程序停止在這里，在后面會(huì)講到為什么這樣寫。}例子3第一個(gè)燈亮#include<reg52.h>〃52單片機(jī)頭文件voidmain() 〃主函數(shù)(Pl=0xfe;〃將單片機(jī)Pl口的8個(gè)口由高到低分別賦值為11111110wlnle(l);〃程序停止在這里，在后面會(huì)講到為什么這樣寫。}2例子1第三個(gè)燈閃爍fir循環(huán)#iiiclude<reg52.h>sbitD2=P1八2;unsignedmta;voidmain(){D2=0;fbr(a=0;a<=10000;a++){};D2=l;fbr(a=0;a<=10000;a++){};}例子2第三個(gè)閃爍while循環(huán)#iiiclude<reg52.h>sbitD2=P1八2;unsignedmta;voidmain()a=5000;D2=0;while(a");a=5000;D2=l;while(a");}2.#include<reg52.h>//52單片機(jī)頭文件sbitledl=PlzO;〃單片機(jī)管腳位聲明voidmain() 〃主函數(shù)(unsignedmti;〃定義一個(gè)mt型變量wlule(l)1=50000; 〃變量賦初值為50000ledl=O; 〃點(diǎn)亮燈while(i—); 〃延時(shí)1=50000;ledl=l; 〃熄滅燈while。--);))3例子1357燈同時(shí)亮#iiiclude<reg52.h>//52單片機(jī)頭文件sbitledl=Plz0; 〃單片機(jī)管腳位聲明sbitled3=PlA2; 〃單片機(jī)管腳位聲明sbitled5=PlA4; 〃單片機(jī)管腳位聲明sbitled7=PlA6; 〃單片機(jī)管腳位聲明voidmain() 〃主函數(shù)(led1=0; 〃將單片機(jī)PL0 口清零led3=0; 〃將單片機(jī)P1.2 口清零led5=0; 〃將單片機(jī)P1.4 口清零led7=0; 〃將單片機(jī)P1.6 口清零wlule(l); 〃程序停止在這里，在后面會(huì)講到為什么這樣寫。}例子2 1357同時(shí)亮#iiiclude<reg52.h>//52單片機(jī)頭文件voidmain() 〃主函數(shù)Pl=0xaa;〃將單片機(jī)Pl口的8個(gè)【】由高到低分別賦值為10101010

while(l);〃程序停止在這里，在后面會(huì)講到為什么這樣寫。while(l);〃程序停止在這里，在后面會(huì)講到為什么這樣寫。)例子3流水燈一個(gè)一個(gè)接著亮不循環(huán)#iiiclude<reg52.h>〃52單片機(jī)頭文件voidmain() 〃主函數(shù){unsignedmti;〃定義一個(gè)mt型變量wlule(l)1=50000;//變量賦初值為50000Pl=0xfe;〃點(diǎn)亮第一個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0xfd;〃點(diǎn)亮第二個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0xfb;〃點(diǎn)亮第三個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0xf7;〃點(diǎn)亮第四個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0xef;〃點(diǎn)亮第五個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0xdf;〃點(diǎn)亮第六個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0xbf;〃點(diǎn)亮第七個(gè)燈while(i");〃延時(shí)1=50000;//變量賦初值為50000Pl=0x7f;〃點(diǎn)亮第八個(gè)燈while(i");〃延時(shí))}例子4#iiiclude<reg52.h>#iiiclude<intrms.h>#defineumtunsignedmt#defineuchaiunsignedcharuchaitemp.numjiuml;sbitbeep=P2A3;voiddelay(uint);voidmain()(temp=0xfe;wlule(l)fbr(num1=0;num1<3;num1++){fbr(num=0;num<8;num++){Pl=temp;beep=O;delay(lOO);temp=_crol_(tempJ);Pl=Oxff:beep=l;delay(lOO);))fbi(num1=0;num1<3;num1++){fbr(num=0;num<8;num++){Pl=temp;beep=O;delay(lOO);temp=_croi_(temp51);Pl=Oxff:beep=l;delay(lOO);))while(l);)}voiddelay(uintz)(uiiitx,y;fbi(x=z;x>0;x")for(y=110;y>0;y-)；4延時(shí)子程序voiddelay()uiiitx;fbr(x=100;x>0;x-){}；}For的嵌套voiddelay(){umtx,y； %局部變量for(x=l00;x>0;x-) %小括號(hào)后不加分號(hào)for(y=600;y>0;y-); %小括號(hào)后的分號(hào)表示該語句是上一條語句的，分號(hào)將該句與下句隔開(或者{fbt(y=600;y>0;y--);})#includeVieg52.h>例子l#include〈ieg52?h>#defineumtunsignedmt#defineucharunsignedcharsbitDl=PlAO;voiddelayO； %注意分號(hào)不能少voidmain(){wlule(l)Dl=0;delay();Dl=l;delay。；}}voiddelay(){uiiitx,y;fbr(x=100;x>0;x-)for(y=600;y>0;y~);}帶參數(shù)的比不帶參數(shù)的要方便例子2無參和有參的對(duì)比#includevieg52.h>#defineumtunsignedmt#defineucharunsignedcharsbitDl=PlAO;//voiddelayO；voiddelay(umt);%帶一?個(gè)參數(shù)的，參數(shù)類型必須要寫，參數(shù)可不寫。比如可以寫成unitz。也可以帶多個(gè)參數(shù)voidmain()while(l)D1=O;delay。200);%亮2秒Dl=l;delay(1200);}}/*voiddelay(){uiiitx,y;fbr(x=100;x>0;x-)foi(y=600;y>0;y~);}*/voiddelay(uintz){uiiitx;uchary;fdr(x=z;x>0;x")for(y=20;y>0;y-);}例子3#include<reg52.h>#defineumtunsignedmt#defineucharunsignedcharsbitDl=PlAO;voiddelay(uint);