單片機(jī)C語言LED燈點(diǎn)亮程序完全版.doc

1例子1第二個(gè)燈亮#includevoid main()P1=0xfd;#includeSbit D1=P10；Void main()D1=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 /52單片機(jī)頭文件sbit led1=P10; /單片機(jī)管腳位聲明void main() /主函數(shù)led1=0;/將單片機(jī)P1.0口清零while(1); /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 /52單片機(jī)頭文件void main() /主函數(shù)P1=0xfe; /將單片機(jī)P1口的8個(gè)口由高到低分別賦值為11111110while(1); /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)#includesbit D2=P12;unsigned int a;void main() D2=0;for(a=0;a=10000;a+);D2=1;for(a=0;a=10000;a+);例子2第三個(gè)閃爍while循環(huán)#includesbit D2=P12;unsigned int a;void main() a=5000;D2=0;while(a-);a=5000;D2=1;while(a-);2.#include /52單片機(jī)頭文件sbit led1=P10; /單片機(jī)管腳位聲明void main() /主函數(shù)unsigned int i; /定義一個(gè)int型變量while(1)i=50000; /變量賦初值為50000led1=0;/點(diǎn)亮燈while(i-); /延時(shí)i=50000;led1=1; /熄滅燈while(i-); 3例子1 3 5 7燈同時(shí)亮#include /52單片機(jī)頭文件sbit led1=P10; /單片機(jī)管腳位聲明sbit led3=P12; /單片機(jī)管腳位聲明sbit led5=P14; /單片機(jī)管腳位聲明sbit led7=P16; /單片機(jī)管腳位聲明void main() /主函數(shù)led1=0;/將單片機(jī)P1.0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while(1); /程序停止在這里，在后面會(huì)講到為什么這樣寫。例子2 1 3 5 7同時(shí)亮#include /52單片機(jī)頭文件void main() /主函數(shù)P1=0xaa; /將單片機(jī)P1口的8個(gè)口由高到低分別賦值為10101010while(1); /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)#include /52單片機(jī)頭文件void main() /主函數(shù)unsigned int i; /定義一個(gè)int型變量while(1)i=50000; /變量賦初值為50000P1=0xfe;/點(diǎn)亮第一個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0xfd;/點(diǎn)亮第二個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0xfb;/點(diǎn)亮第三個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0xf7;/點(diǎn)亮第四個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0xef;/點(diǎn)亮第五個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0xdf;/點(diǎn)亮第六個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0xbf;/點(diǎn)亮第七個(gè)燈while(i-); /延時(shí)i=50000; /變量賦初值為50000P1=0x7f;/點(diǎn)亮第八個(gè)燈while(i-); /延時(shí) 例子4#include#include #define uint unsigned int #define uchar unsigned char uchar temp,num,num1;sbit beep=P23;void delay(uint);void main() temp=0xfe;while(1)for(num1=0;num13;num1+)for(num=0;num8;num+)P1=temp;beep=0;delay(100);temp=_crol_(temp,1);P1=0xff;beep=1;delay(100);for(num1=0;num13;num1+)for(num=0;num0;x-)for(y=110;y0;y-);4延時(shí)子程序void delay()uint x;for(x=100;x0;x-)；For的嵌套void delay()uint x,y;%局部變量for(x=100;x0;x-) %小括號(hào)后不加分號(hào)for(y=600;y0;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for(y=600;y0;y-);)#include例子1#include#define uint unsigned int #define uchar unsigned char sbit D1=P10;void delay();%注意分號(hào)不能少void main()while(1)D1=0;delay();D1=1;delay();void delay()uint x,y;for(x=100;x0;x-)for(y=600;y0;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#include#define uint unsigned int #define uchar unsigned char sbit D1=P10;/void delay();void delay(uint);%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uint z。也可以帶多個(gè)參數(shù)void main()while(1)D1=0;delay(1200);%亮2秒D1=1;delay(1200);/*void delay()uint x,y;for(x=100;x0;x-)for(y=600;y0;y-);*/void delay(uint z)uint x;uchar y;for(x=z;x0;x-)for(y=20;y0;y-);例子3#include#define uint unsigned int #define uchar unsigned char sbit D1=P10;void delay(uint);void ma