PIC单片机例程完整源代码

#include<pic.h> #define uchar unsigned char #define uint unsigned int __CONFIG(0x3B31); const uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; uchar key_num; void delay(uint x); void init(); void scan(); void didi(uchar num); void disp(uchar num1,uchar num2,uchar num3,uchar num4,uchar num5,uchar num6); void main() { init(); while(1) { scan(); disp(key_num,2,3,4,5,6); } } void delay(uint x) { uint a,b; for(a=x;a>0;a--) for(b=110;b>0;b--); } void init() { TRISB=0xff; TRISD=0; TRISA=0; TRISE0=0; RE0=0; PORTD=0; PORTA=0; } void scan() { if(RB0==0) { delay(10); if(RB0==0) { didi(1); while(!RB0) { disp(key_num,2,3,4,5,6); key_num=1;//PORTD=0x01; } } } if(RB1==0) { delay(10); if(RB1==0) { didi(2); while(!RB1) { disp(key_num,2,3,4,5,6); key_num=2;//PORTD=0x02;} } } } if(RB2==0) { delay(10); if(RB2==0) { didi(3); while(!RB2) { disp(key_num,2,3,4,5,6); key_num=3;//PORTD=0x04; } } } if(RB3==0) { delay(10); if(RB3==0) { didi(4); while(!RB3) { disp(key_num,2,3,4,5,6); key_num=4;//PORTD=0x08; } } } } void didi(uchar num) { uchar di_num; for(di_num=num;di_num>0;di_num--) { RE0=1; delay(50); RE0=0; delay(20); } } void disp(uchar num1,uchar num2,uchar num3,uchar num4,uchar num5,uchar num6) { PORTD=table[num1];//显示第一个数码管 PORTA=0x20;//0010 0000 delay(2); PORTD=table[num2];//显示第二个数码管 PORTA=0x10;//0001 0000 delay(2); PORTD=table[num3];//显示第三个数码管 PORTA=0x08;//0000 1000 delay(2); PORTD=table[num4];//显示第四个数码管 PORTA=0x04;//0000 0100 delay(2); PORTD=table[num5];//显示第五个数码管 PORTA=0x02;//0000 0010 delay(2); PORTD=table[num6];//显示第六个数码管 PORTA=0x01;//0000 0001 delay(2); }