#include "at24c02.h"
#include "iic.h"

// at24c02 写字节的函数
void at24c02_write_one_byte(u8 addr,u8 dat)
{
        iic_start();
        iic_write_byte(0xa0);
        iic_wait_ack();
        iic_write_byte(addr);
        iic_wait_ack();
        iic_write_byte(dat);
        iic_wait_ack();
        iic_stop();                
        delay_10us(10);
}


// 读字节的函数
u8 at24c02_read_byte(u8 addr)
{
        u8 temp =0;

        iic_start();
        iic_write_byte(0xa0);
        iic_wait_ack(); 
        iic_write_byte(addr);
        iic_wait_ack();

        iic_start();
        iic_write_byte(0xa1);
        iic_wait_ack();
        temp = iic_read_byte(0);
        iic_stop();
        return temp;                
}