/////////////////////////////////////////////////////////////////////////// 
/*************************************************************************/
#include <string.h>
#include <m500a.h>
#include <main.h>
#include <reg52.h>

sbit   LED  =  P2^6;
sbit   WARN =  P2^7;

unsigned char length = 0,type = 1;
unsigned char rcvdata[16] = {"                "};
unsigned char timerout = 0;
////////////////////////////////////////////////////////////////////
void    main (void)
{
//  unsigned char counter;

  unsigned char status1,x;
  unsigned char Snr_RC500[4];       // Serial Number of the MFRC500
  unsigned char cardserialno[4];
  unsigned char cardtype[2];

  P2 = 0x00;
  LED = 1;WARN = 1;
  init_lcd();
  clrram();
  timer_init();
  rs232_init();                					    						

  line_disp(0,"*** 考勤系統 ***");
  line_disp(1,"----------------");
  line_disp(2,"--  指導老師  --");
  line_disp(3,"  劉盾  副教授  ");

  RC500Config();      
  PcdReadE2(8,4,Snr_RC500);
//  rs232_send(Snr_RC500,4);

  delay_1s(1200);
  clrram();
  time_disp1(0);
  line_disp(1,"----------------");
  line_disp(2,"    初始完成    ");
  line_disp(3,"----------------");

  delay_1s(1200);
  clrram(); 

  time_disp2();
  line_disp(2,"----------------");
  line_disp(3,"    請放入卡    ");
  LED = 0;
  while(1)
    {    																											
	 while(CardRequest(PICC_REQALL, cardtype)==MI_OK)
	    { 
		status1=ReadCardNum(0,cardserialno);
		if (status1 == MI_OK)
			{
	 		rs232_send(cardserialno,4);
			LED = 1;

				clrram();
				time_disp1(1);
				line_disp(2,"----------------");
				TL0 = 0; TH0 = 0; ET0 = 1; TR0 = 1;
				while(type != 3)
				{
					if (timerout == 1)
					{
						TR0 = 0;ET0 = 0;
						WARN = 0;LED = 1;
						line_disp(0,"----------------");
						line_disp(1,"請檢查串口連接情");
						line_disp(2,"況以及軟件設置！");
						line_disp(3,"----------------");
					}
				}
				line_disp(1,rcvdata);
				while(type != 1);line_disp(3,rcvdata);
				TR0 = 0; ET0 = 0;
				if(!strcmp(rcvdata,"數據庫無此卡信息"))
					{
						WARN = 0;
						delay_1s(1000);
						WARN = 1;
					}
				for (x=0;x<16;x++)
					rcvdata[x] = ' ';				
			}
		delay_1s(500);
		LED = 0;
		delay_1s(500);
		WARN = 1;
		clrram();
		time_disp2();
		line_disp(2,"----------------");	
	    line_disp(3,"    請放入卡    "); 
	    }
	 time_disp2();
	 delay_1s(50);
	}
}

extern unsigned char sendflag;
void	rs232_rev(void)	interrupt	4
{
	if ( TI == 1 )
	{
		 TI = 0;
		 sendflag = 1;
	}
	if ( RI == 1 )
	{
		if (SBUF == 0x30)
			{
				type ++;
				if (type == 4)
					{ 
					type = 1;
					length = 0;
					}
				if( type == 2 )
					length = 10;
				else 
					length = 0;
			}
		else 
			rcvdata[length++] = SBUF;
		RI = 0;
	}	
}
unsigned char count=50;
void	timer0(void)	interrupt	1
{
	TH0 = 0; TL0 = 0;
	count --;
	if (!count)
	{
		timerout = 1;
		count = 20;	
	}
	else TR0 = 1;
}
//////////////////////////////////////////////////////////////////////////////