main.h

环境：keil c51 i2c调度工具

unsigned char xdata serial_data[255],receive_total=0xff;
unsigned char i2c_data,i2c_data_shift,i2c_device_address;
bit           read_flag=0;
bit		IIC_ERROR=0;
bit		READ_WRITE_SET=0;
extern void delay_ms(unsigned char i);
extern void initi_system(void);
extern void GOTOISP_prom(void);
extern void i2c_device_sub_data(unsigned char i2c_device_address, i2c_sub_address, i2c_data_shift);
extern void i2c_device_sub_data_r(unsigned char i2c_device_address, i2c_sub_address);