void write_add(unsigned char address,unsigned char date)
{
start();
write_byte(0xa0);
respons();
write_byte(address);
respons();
write_byte(date);
respons();
stop();
}
void write_add(uchar address,uchar date)
{
start();
write_byte(0xa0);//a表示器件地址，0表示接收数据
respons();//应答
write_byte(address);//写数据的地址
respons();//应答
write_byte(date);//写数据
respons();//应答
stop();//停止信号
}
void write_add(unsigned char address,unsigned char date)//向地址写一个字节数据
{
start();
writebyte(0xa0);//A0,A1,A2接地，AT24C02芯片地址为1010，送控制字为1010A2A1A0R/~W
respons();
writebyte(address);
respons();
writebyte(date);
respons();
stop();
}
char read_add(unsigned char address)
{
unsigned char date;
start();
write_byte(0xa0);
respons();
write_byte(address);
respons();
start();
write_byte(0xa1);
respons();
date=read_byte();
stop();
return date;
}
uchar read_add(uchar address)
{
uchar date;
start();
write_byte(0xa0);//a表示器件地址，0表示接收数据
respons();//应答
write_byte(address);//读数据的地址
respons();//应答
start();
write_byte(0xa1);//1表示读数据
respons();
date=read_byte();
stop();
return date;
}void timer0() interrupt 1
unsigned char read_add(unsigned char address)//向地址读一个字节数据
{
unsigned char date;
start();
writebyte(0xa0);//A0,A1,A2接地，AT24C02芯片地址为1010，送控制字为1010A2A1A0R/~W
respons();
writebyte(address);
respons();
start();
writebyte(0xa1);//A0,A1,A2接地，AT24C02芯片地址为1010，送控制字为1010A2A1A0R/~W
respons();
date = readbyte();
stop();
return date;
}
