#ifndef _LM75_H_#define _LM75_H_#include "main.h"extern volatile unsigned char lm75_state;extern volatile unsigned int lm75_temp_tmp;void lm75_init(void);void lm75_send_start(void);void lm75_send_stop(void);void lm75_send_device_address(unsigned char addr);void lm75_send_byte(unsigned char byte);unsigned char lm75_read(void);void lm75_write(unsigned char data);//int lm75_read_temp(void);unsigned char lm75_nonblocking_temp_read(unsigned char *data);#endif