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#ifndef IO_H
#define IO_H

#define BITN(x) (1<<(x))

void i2c_init (void);
void i2c_send_charnl (unsigned char mot);
unsigned char i2c_read_char (void);
void i2c_start (void);
void i2c_end (void);
void wait_2v5us (void);
void i2c_send (unsigned char reg, unsigned char data);
unsigned char i2c_recv ( unsigned char reg);
void i2c_dump (unsigned char * tab);
#endif