#include <AT89X52.H>
sbit G=P1^4; //P1.4为显示颜色控制信号端口
sbit R=P1^5; //P1.5为显示颜色控制信号端口
unsigned char one_word=0x00; //接收计数
unsigned char data_buf[32]; //接收缓存
unsigned char i = 0x00; //缓存地址偏移变量
//---------------------------------------------
unsigned char abcd=0x00; //数据偏移量；
/////////24C08读写驱动程序////////////////////
sbit scl=P3^4; //24c08 SCL
sbit sda=P3^5; //24c08 SDA
void delay1(unsigned char x)
{
unsigned int i;
for(i=0;i<x;i++);
}
void flash()
{ ; ; }
void x24c08_init() //24c08初始化子程序
{
scl=1;
flash();
sda=1;
flash();
}
void start() //启动I2C总线
{
sda=1;
flash();
scl=1;
flash();
sda=0;
flash();
scl=0;
flash();
}
void stop() //停止I2C总线
{
sda=0;
flash();
scl=1;
flash();
sda=1;
flash();
}
void writex(unsigned char j) //写一个字节
{ unsigned char i,temp;
temp=j;
for (i=0;i<8;i++)
{
temp=temp<<1;
scl=0;
flash();
sda=CY;
flash();
scl=1;
flash();
}
scl=0;
flash();
sda=1;
flash();
}
unsigned char readx() //读一个字节
{
unsigned char i,j,k=0;
scl=0;
flash();
sda=1;
for (i=0;i<8;i++)
{
flash();
scl=1;
flash();
if (sda==1) j=1;
else j=0;
k=(k<<1)|j;
scl=0;
}
flash();
return(k);
}
void clock() //I2C总线时钟
{
unsigned char i=0;
scl=1;
flash();
while ((sda==1)&&(i<255))i++;
scl=0;
flash();
}
////////从24c02的地址address中读取一个字节数据/////
unsigned char x24c08_read(unsigned char address)
{
unsigned char i;
start();
writex(0xa0);
clock();
writex(address);
clock();
start();
writex(0xa1);
clock();
i=readx();
stop();
delay1(10);
return(i);
}
//////向24c02的address地址中写入一字节数据info/////
void x24c08_write(unsigned char address,unsigned char info)
{
EA=0;
start();
writex(0xa0);
clock();
writex(address);
clock();
writex(info);
clock();
stop();
EA=1;
delay1(50);
}
/////////////24C08读写驱动程序完/////////////////////
//------------串口中断部分-------//
void Init_Com(void)
{
TMOD = 0x20;
PCON = 0x00;
SCON = 0x50; //;串口为方式1 8 UART
TH1 = 0xfd;
TL1 = 0xfd;
TR1 = 1; //;波特率9600
REN = 1;
ES = 1;
EA = 1;
}
void ComInt() interrupt 4
{
unsigned char dat;
unsigned char abc=0x00;
ES = 0;
RI = 0;
if(i>31) //缓存地址偏移变量rest
{
i = 0x00;
}
if(one_word>32)//PC DOWN 计数 偏移变量rest（好）字
{
one_word=0x01;
}
one_word++;
i++;
dat = SBUF;
data_buf = dat; //LED缓存
SBUF = dat;
do{}while( TI == 0 );
TI = 0;
ES = 1;
}
//-------串口end-----------------
//-----------READ IIC STAR--------------------
void IIC_start(void)
{
unsigned char IIC_add=0x00; //IIC
unsigned char DATA_add=0x00; //缓存
Init_Com(); //开串口中断
if(one_word>31) //判断是否接收完一个汉字的数据
{
DATA_add=0x00; //初始化缓存地址偏移变量
for(DATA_add=0x00;DATA_add<31;) //字扫描；IIC地址初始化
{
x24c08_write(IIC_add,data_buf[DATA_add]); //在24c08的地址IIC_add中写入数据
DATA_add++; //缓存地址加一
IIC_add++; //IIC地址加一
}
}
}
//-------------IIC end -----------------
void main(void)
{
x24c08_init(); //初始化24C08
IIC_start(); //IIC存储
//sec=x24c08_read(abcd); //读出保存的数据赋于sec
//x24c08_write(abcd,sec); //在24c08的地址2中写入数据sec
}
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