xinhaoxulie.c

一种任意方波信号的产生方法

#include<reg51.h>
#include<stdio.h>
sbit P0_0=P0^0;   //10ms信号序列输出
sbit P2_0=P2^0;   //信号序列101010
sbit P2_3=P2^3;   //信号序列110110
sbit P2_6=P2^6;   //信号序列001001
unsigned char num0[6]={0x01,0x00,0x01,0x00,0x01,0x00};
unsigned char num1[6]={0x01,0x01,0x00,0x01,0x01,0x00};
unsigned char num2[6]={0x00,0x00,0x01,0x00,0x00,0x01};
void initial(void)
{
TCON=0x00;
TH0=0xD8;
TL0=0xEF;
TR0=1;
}
void main()
{ int i=0;
  while(1)
  {
   if(P2_0==1)
     {
      TMOD=0x01;
	  if(i==6){i=0;}
      initial();
      do{}while(!TF0);
      P0=num0[i++];
	 }
   else if(P2_3==1)
     {
      TMOD=0x01;
	  if(i==6){i=0;}
      initial();
      do{}while(!TF0);
      P0=num1[i++];
	 }
   else if(P2_6==1)
     {
      TMOD=0x01;
	  if(i==6){i=0;}
      initial();
      do{}while(!TF0);
      P0=num2[i++];
	 }
  }
}