#include<reg52.h>
#include "24c02.h"
#include "MacroAndConst.h"
#include "Lcd.h"
#include "Assistance.h"

void delay0()
{ ;; }

void start()  //開始信號
{	
	sda=1;
	delay0();
	scl=1;
	delay0();
	sda=0;
	delay0();
}
void stop()   //停止
{
	sda=0;
	delay0();
	scl=1;
	delay0();
	sda=1;
	delay0();
}

void respons()  //應(yīng)答
{
	uchar i;
	scl=1;
	delay0();
	while((sda==1)&&(i<250))i++;
	scl=0;
	delay0();
}
void init_24c02()//IIC初始化函數(shù)
{
	sda=1;
	delay0();
	scl=1;
	delay0();
}

void write_byte(uchar date)//寫一個字節(jié)函數(shù)
{
	uchar i,temp;
	temp=date;
	for(i=0;i<8;i++)
	{
		temp=temp<<1;
		scl=0;
	    delay0();
		sda=CY;
		delay0();
		scl=1;
		delay0();
	}
	scl=0;
	delay0();
	sda=1;
	delay0();
}

//void write_longbyte(uint date)//寫一個字節(jié)函數(shù)
//{
//	uint i,temp;
//	temp=date;
//	for(i=0;i<16;i++)
//	{
//		temp=temp<<1;
//		scl=0;
//	    delay0();
//		sda=CY;
//		delay0();
//		scl=1;
//		delay0();
//	}
//	scl=0;
//	delay0();
//	sda=1;
//	delay0();
//}


uchar read_byte()//讀一個字節(jié)函數(shù)
{
	uchar i,k;
	scl=0;
	delay0();
	sda=1;
	delay0();
	for(i=0;i<8;i++)
	{
		scl=1;
		delay0();	
		k=(k<<1)|sda;
		scl=0;
		delay0();	
	}
	return k;
}

//uchar read_longbyte()//讀一個字節(jié)函數(shù)
//{
//	uchar i,k;
//	scl=0;
//	delay0();
//	sda=1;
//	delay0();
//	for(i=0;i<16;i++)
//	{
//		scl=1;
//		delay0();	
//		k=(k<<1)|sda;
//		scl=0;
//		delay0();	
//	}
//	return k;
//}

void write_addbyte(uchar address,uchar date)//指定地址寫一個字節(jié)
{
	start();
	write_byte(0xa0);
	respons();
	write_byte(address);
	respons();
	write_byte(date);
	respons();
	stop();
}

//void write_addpage(uchar address, uint date)//指定地址寫一個字節(jié)
//{
//	start();
//	write_byte(0xa0);
//	respons();
//	write_byte(address);
//	respons();
//	write_longbyte(date);
//	respons();
//	stop();
//}


char read_add(uchar address)//指定地址讀一個字節(jié)
{
	uchar date;
	start();
	write_byte(0xa0);
	respons();
	write_byte(address);
	respons();
	start();
	write_byte(0xa1);
	respons();
	date=read_byte();
	stop();
	return date;
}

//uint read_addContinuous(uchar address)//指定地址讀一個字節(jié)
//{
//	uint date;
//	start();
//	write_byte(0xa0);
//	respons();
//	write_byte(address);
//	respons();
//	start();
//	write_byte(0xa1);
//	respons();
//	date=read_longbyte();
//	stop();
//	return date;
//}