twi.h

利用avr c编程的综合程序

#ifndef _TWI_H_
#define _TWI_H_

#define TWI_clock_frequency 16000000

struct TWI_master_data
{
  volatile unsigned char  length;	/* Length of string. */
  volatile char *string;	        /* String to be sent or received. */
  volatile char *flag;	                /* Flag reset when complete. */
  volatile struct TWI_master_data *next;
};

struct TWI_slave_data
{
  volatile unsigned char  length;	/* Length of string. tobe received */
  volatile char *string;	        /* String to be sent or received. */
  volatile char *flag;	                /* Flag reset when complete. */
  volatile struct TWI_slave_data *next;
};

void TWI_initialize (void);

void TWI_master_initialize (unsigned scl_frequency);

void TWI_slave_initialize (unsigned char
				      own_address,
				      struct TWI_slave_data
				      *send,
				      struct TWI_slave_data
				      *recieve);

void TWI_master (struct TWI_master_data *data);

#endif