數碼管的驅動

ID:65608 · 發(fā)表于 2014-9-1 23:13

#include<pic.h>             //包含單片機內部資源預定義
#include "DelayMs.h"
__CONFIG(0x3B31);
//定義常數0-9的數據表格
const unsigned char TABLE[] = {0x3f,0x6,0x5b,0x4f,0x66,0x6d,0x7c,0x7,0x7f,0x6f};
void Display(unsigned char num,unsigned char data)
{
PORTD = TABLE[data]; //取出數據，送D口顯示
PORTC = 0x01;
switch(num)
{
  case 0:
PORTA = 0x01;
break;
  case 1:
PORTA = 0x02;
break;
  case 2:
PORTA = 0x04;
break;
  case 3:
PORTA = 0x06;
break;
  case 4:
PORTA = 0x08;
break;
  case 5:
PORTA = 0x0A;
break;
  case 6:
PORTA = 0x0C;
break;
  case 7:
PORTA = 0x0E;
break;

  default:
PORTA = 0x00;
}
DelayMs(1);
}
/*void main()
{
unsigned char i;
TRISD = 0;    //portd 輸出
TRISA = 0;    //porta 輸出
TRISC = 0;    //porta 輸出
PORTC = 0x01;    //74HC138控制端口
while (1)       //死循環(huán)，讓數碼管持續(xù)點亮
{
  for(i=0;i<8;i++)
  {
Display(i,i+1);
DelayMs(3);
  }
}
}
*/

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