/* LED.C File
   The LED driver
   Created by Computer-lov. Date: 2005.5.25
   Last edited date:2005.5.25
   Copyright (c) 2005 Computer-lov
   version 1.0
   All rigths reserved
   歡迎訪問我的blog：  http://computer00.21ic.org
*/

#include "LED.H"

void delayXms(unsigned int x)   //延遲x毫秒函數
{
 unsigned int i,j;
 for(i=0;i<x;i++)
  for(j=0;j<130;j++);
}


code unsigned char LED_TAB[]=
{
 0xC0,       //0
 0xF9,       //1
 0xA4,       //2
 0xB0,       //3
 0x99,       //4
 0x92,       //5
 0x82,       //6
 0xF8,       //7
 0x80,       //8
 0x98,       //9
 0x88,       //A
 0x83,       //B
 0xC6,       //C
 0xA1,       //D
 0x86,       //E
 0x8E,       //F
 0xC0&0x7F,  //帶小數點顯示的0
 0xF9&0x7F,  //帶小數點顯示的1
 0xA4&0x7F,  //帶小數點顯示的2
 0xB0&0x7F,  //帶小數點顯示的3
 0x99&0x7F,  //帶小數點顯示的4
 0x92&0x7F,  //帶小數點顯示的5
 0x82&0x7F,  //帶小數點顯示的6
 0xF8&0x7F,  //帶小數點顯示的7
 0x80&0x7F,  //帶小數點顯示的8
 0x98&0x7F,  //帶小數點顯示的9
 0x88&0x7F,  //帶小數點顯示的A
 0x83&0x7F,  //帶小數點顯示的B
 0xC6&0x7F,  //帶小數點顯示的C
 0xA1&0x7F,  //帶小數點顯示的D
 0x86&0x7F,  //帶小數點顯示的E
 0x8E&0x7F,  //帶小數點顯示的F
 0xFF        //滅
};

void display(unsigned char * disp_buff)   //顯示函數
{
 unsigned char i;
 unsigned char temp_bit;
 temp_bit=0x80;
 for(i=0;i<6;i++)                         //顯示六位
  {
   LED_BIT=0xFF;                          //消隱
   LED_SEGMENT=LED_TAB[disp_buff[i]];     //段碼輸出
   LED_BIT=~temp_bit;                     //位選輸出
   temp_bit>>=1;                          //修改位選
   delayXms(2);                           //延時2毫秒
  }
 LED_BIT=0xFF;                            //關燈
}