/**************************************
             TLC2543驅(qū)動程序
*************************************/

#include <reg51.h>
#include <intrins.h>

/**************************************
        2543控制引腳宏定義
*************************************/
sbit 	CLOCK = P1^0; /*2543時(shí)鐘*/
sbit 	D_IN  =	P1^1; /*2543輸入*/
sbit 	D_OUT =	P1^2; /*2543輸出*/
sbit 	_CS   =	P1^3; /*2543片選*/

#define uint unsigned int
#define uchar unsigned char


static unsigned char code seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//共陰
//void delay (unsigned char i)
/**************************************
  名稱：delay
  功能：延時(shí)模塊
  輸入?yún)?shù)：n要延時(shí)的周期數(shù)
  輸出參數(shù)：無
*************************************/
void delay(uchar n)
{
	uchar i;
	for(i=0;i<n;i++)
	{
   	_nop_();
	}
}

/**************************************
  名稱：read2543
  功能：TLC2543驅(qū)動模塊
  輸入?yún)?shù)：port通道號
  輸出參數(shù)：ad轉(zhuǎn)換值
*************************************/
uint read2543(uchar port)
{
	uint ad=0,i;
	CLOCK=0;
	_CS = 0;
	port<<=4;
	for(i=0;i<12;i++)
	{
  		if(D_OUT) ad|=0x01;
  		D_IN=(bit)(port&0x80);
  		CLOCK=1;
  		delay(3);
  		CLOCK=0;
  		delay(3);
  		port<<=1;
  		ad<<=1;
	}
	_CS=1;
	ad>>=1;
	return(ad);
}

/**************************************
  名稱：main
  功能：主函數(shù)
  輸入?yún)?shù)：無
  輸出參數(shù)：無
*************************************/


void main(void)
{	  
	unsigned int ad,aea;
    float ff;
	   

       	unsigned char i=0; 

	while(1)
	{
		ad=read2543(0);
	   	ff=ad*1.22;
		aea=(int)ff;
	   	for(i=0;i<8;i++)
	   	{
	     		P2=0x0f-i;

	   		P0=~seg[aea%10];
	   		aea=aea/10;
	   		delay(2000);
		}

	   
	}
}