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標(biāo)題: 51單片機(jī)入門之控制led燈程序 [打印本頁(yè)]

作者: 秋名山lyb 時(shí)間: 2019-4-20 12:31
標(biāo)題: 51單片機(jī)入門之控制led燈程序
通過控制引腳電位，控制LED燈
一：
定義I/O口式：
#include<reg52.h>
sbit Led0=P0^0;
sbit Led1=P0^1;
sbit Led2=P0^2;
sbit Led3=P0^3;
sbit Led4=P0^4;
sbit Led5=P0^5;
sbit Led6=P0^6;
sbit Led7=P0^7;
sbit Led8=P2^0;
sbit Led9=P2^1;
sbit Led10=P2^2;
sbit Led11=P2^3;
sbit Led12=P2^4;
sbit Led13=P2^5;
sbit Led14=P2^6;
sbit Led15=P2^7;
void delay(void)
{
      unsigned char a,b;
      for(a=0;a<200;a++)
      for(b=0;b<200;b++);

}

void main()
{
      while (1)
      {
      Led0=0;
      delay();
      Led0=1;
      delay();
      Led1=0;
      delay();
      Led1=1;
      delay();
      Led2=0;
      delay();
      Led2=1;
      delay();
      Led3=0;
      delay();
      Led3=1;
      delay();
      Led4=0;
      delay();
      Led4=1;
      delay();
      Led5=0;
      delay();
      Led5=1;
      delay();
      Led6=0;
      delay();
      Led6=1;
      delay();
      Led7=0;
      delay();
      Led7=1;
      delay();
      Led8=0;
      delay();
      Led8=1;
      delay();
      Led9=0;
      delay();
      Led9=1;
      delay();
      Led10=0;
      delay();
      Led10=1;
      delay();
      Led11=0;
      delay();
      Led11=1;
      delay();
      Led12=0;
      delay();
      Led12=1;
      delay();
      Led13=0;
      delay();
      Led13=1;
      delay();
      Led14=0;
      delay();
      Led14=1;
      delay();
      Led15=0;
      delay();
      Led15=1;
      delay();
      }
}
二、數(shù)組式：
#include<reg51.h>
unsigned char table[]={0xFE,0xFD,0xFB,0xF7,0xEF,0xDF,0xBF,0x7F}￡»
void delay (1000)
{
      unsigned char a,b;
      for(a=0;a<200;a++)
      for(b=0;b<200;b++);
}
void main()
{
      unsigned char i;
      while(1)
      {
      for(i=0;i<8;i++);
      {
      P0=table[i ];
      delay();
      }
      }
}

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