1.c

PIC16F877应用的AD转换主程序 并可以通过LCD显示

#include <pic.h>
unsigned char a,b,c=0;
const char xianshi[]={0x3f,0x06,0x5b,0x4f,0x66, 
                      0x6d,0x7d,0x07,0x7f,0x6f};
void initial()   
{  
   INTCON=0x00;
   ADCON1=0x07;
  
 }
 
 void timer0initial()     
 {          PSA=0;
            T0CS=0;
            T0IF=0;
            GIE=1;
            T0IE=1;
            TMR0=0xf0;
            PS0=1;
            PS1=1;
            PS2=1;

 }	 

void delay()
{  int i;
   for(i=0;i<10;i++)
   i=i;
}
 

void interrupt INT_TIMER1()
{   
            
            if(T0IF==1)
          {  T0IF=0;
            TMR0=0xf0;
            a++;
            if(a==100)
            {b++;
             if(b==10) {c++; b=0;}
              if(c==10) c=0;  
            }
            
         }
 }

void main()
{   
    TRISB=0x00;
    TRISD=0x00;
    
    initial();
    timer0initial();
    while(1)
    { PORTB=0xf7;
      PORTD=xianshi[b]; delay(); PORTD=0x00;
      PORTB=0xef;
      PORTD=xianshi[c];delay();  PORTD=0x00;
    }

}