tian_an_men.c

单片机C语言15个实验附有原理图和程序 是我的课程作业 以经过实践验证

//tian_an_men.c
#include <stdio.h>
#include <reg51.h>
sbit P30=P3^0;sbit clk=P0^7;sbit sda=P0^6;
unsigned char ledk[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char dd,i=0;
unsigned char code tongh[9]={0xf8,0xf9,0xfa,0xfa,0xfb,0xfb,0xfc,0xfc,0xfc};
unsigned char code tongl[9]={0x88,0x58,0x13,0x67,0x04,0x90,0x0b,0x44,0xac};
unsigned char code song[64]={5,8,5,4,3,2,1,1,1,2,3,3,1,3,4,5,
                             5,8,5,4,3,5,2,4,3,2,6,5,2,3,1,
							 5,3,6,8,7,6,7,5,3,9,9,9,8,7,6,8,
							 5,5,3,6,8,7,6,7,8,9,5,6,7,8,9,5,8};
unsigned char code  len[64]={3,1,2,2,2,2,4,2,2,2,2,2,2,2,2,8,
                             3,1,2,2,2,2,4,3,1,2,2,4,2,2,8,
							 6,2,4,4,4,2,2,4,4,3,1,2,2,4,2,2,
							 8,6,2,4,4,2,2,2,2,8,3,1,2,2,4,4,8};
void delay(unsigned int n)
{unsigned int i,j;
   for(i=0;i<n;i++)
     for(j=0;j<n;j++)
	    ;}
void shift(dd)
{static unsigned char d;
   unsigned char j=0;
    d=dd;
   	while(j<8)
	{if((d&0x80)!=0) sda=1;
       else  sda=0;
	   clk=0;clk=1;
	   d<<=1;j++;}  }
void out(void)
{dd=ledk[i+1];shift(dd);P2=0xfe;}
void t0() interrupt 1
{TH0=tongh[i];TL0=tongl[i];P30=!P30;}
void main(void)	                                                                                                                                                                                                           
{unsigned char j,k;
  TMOD=0x01;TH0=0xf8;TL0=0x88;
  EA=1;ET0=1;TR0=1;P30=1;
  while(1)
  {i=song[j]-1;out();
   for(k=1;k<=len[j];k++)delay(130);
   j++;if(j>63)j=0;}
}