/*-------------------------
32(MICKEY) -->S1,S3 -->P0.5
33(KEY++)  -->S2    -->P0.4
18(MICLED) -->D4    -->P2.0
31         -->SDA   -->P0.6
30         -->SCL   -->P0.7
5          -->RXD   -->P3.0
7          -->TXD   -->P3.1
-------------------------*/

#include	<reg52.h>
#include	"key.h"	
#include	"iic.h"
#include	"delay.h"
#define		ADDR	0x20			//定義讀寫地址

unsigned	char	OPEN[4]	={0X01,0X02,0X03,0XFC};	
unsigned	char	CLOSE[4]={0X02,0X02,0X03,0XFC};	
unsigned	char	BLINK[4]={0X03,0X02,0X05,0XFC};
unsigned 	char  getflag[4];
	
unsigned	char	writedata[16];
unsigned	char	readdata[16];

unsigned	char	i=0;
unsigned	char	j=0;

unsigned 	char 	k=0;//循環計數變量


void	InitBaudRate(void);//初始化波特率38400bps

bit	CheckFlag(unsigned char *thedata,unsigned char *flag)
{
	unsigned char i;
	for(i=0;i<4;i++)
	{
		if(*thedata!=*flag)	return 0;
		else {thedata++;flag++;}
	}
	return 1;
}

void main()
{
	MICLED=OFF;						//LED默認熄滅
	InitTimer2();
	InitBaudRate();

	while(1)						//循環檢測按鍵
	{
		KeyStatus();
		KeyDeal();
	}
}
void	InitBaudRate(void)	 //38400bps
{
	SCON	=0X50;
	TMOD	=0X20;
	TH1		=253;
	TL1		=253;
	PCON	=0X80;
	TR1		=1;
	TI		=0;
	RI		=0;
	EA		=1; 
	ES		=1; 
}


void  ES_INTERRUPT(void)  interrupt 4
{
	if(RI==1)
	{
		//關閉中斷
	  	EA	=0;
	  //數據暫存
		getflag[i++]	=SBUF;
		if(i>3||SBUF==0XFC)  i=0;		
		writedata[j]=SBUF;
		if(j>15)	j=0;
		j++;
		//判斷讀寫
		if(SBUF==0X2A)//讀寫開始字符*
		{
			j=0;
			i=0;
		}
		if(SBUF==0X23)//讀寫結束字符#
		{		
				WritePages(ADDR,writedata,j);
				//WriteNByte(ADDR,writedata,j);
				ReadNByte(ADDR,readdata,j);
				for(k=0;k<j;k++)
				{
					SBUF=readdata[k];
					while(!TI);
					TI=0;
				}
				j=0;
				i=0;
		}
		//判斷命令
		if(CheckFlag(getflag,OPEN))		Setkeyvalue(2);
		else if(CheckFlag(getflag,CLOSE))		Setkeyvalue(3);
		else if(CheckFlag(getflag,BLINK))		Setkeyvalue(1);

		//開啟中斷
		RI	=0;
		EA	=1;	
	}  
	
}