i2c.h

Freescale MCF5445evb 参考测试代码

/*
 * File:        i2c.h
 * Purpose:     I2C buffer structure information
 *
 * Notes:
 */

#ifndef __I2C_H__
#define __I2C_H__

/********************************************************************/

/* I2C parameters */
#define I2C_BUFFER_SIZE		(50)
#define I2C_TXRX		(2)
#define I2C_TX			(0)
#define	I2C_RX			(1)
#define iPORT			(0xD2)

#define POLLING_MODE
#define DEBUG

/* Function prototypes */
void i2c_master(uint8, uint8);

__interrupt__
void i2c_handler(void);

/* Structure for storing I2C transfer data */
typedef struct {
    int tx_index;			/* TX index */
    int rx_index;			/* RX index */
    int data_present;			/* Data present flag */
    uint16 length;			/* Length of the buffer in bytes */
    uint8 buf[I2C_BUFFER_SIZE];		/* Data buffer */
} I2C_BUFFER;

/********************************************************************/

#endif /* __I2C_H__ */