i2c.h

Go to the documentation of this file.

/*****************************************************************************
 *   i2c.h:  Header file for NXP LPC23xx/24xx Family Microprocessors
 *
 *   Copyright(C) 2006, NXP Semiconductor
 *   All rights reserved.
 *
 *   History
 *   2006.07.19  ver 1.00    Prelimnary version, first Release
 *
******************************************************************************/
#ifndef __I2C_H 
#define __I2C_H

#define BUFSIZE                 0x20
#define MAX_TIMEOUT             0x00FFFFFF

#define I2CMASTER               0x01
#define I2CSLAVE                0x02

/* For more info, read Philips's SE95 datasheet */
#define LM75_ADDR               0x90
#define LM75_TEMP               0x00
#define LM75_CONFIG             0x01
#define LM75_THYST              0x02
#define LM75_TOS                0x03

#define RD_BIT                  0x01

#define I2C_IDLE                        0
#define I2C_STARTED                     1
#define I2C_RESTARTED           2
#define I2C_REPEATED_START      3
#define DATA_ACK                        4
#define DATA_NACK                       5

#define I2CONSET_I2EN           0x00000040  /* I2C Control Set Register */
#define I2CONSET_AA                     0x00000004
#define I2CONSET_SI                     0x00000008
#define I2CONSET_STO            0x00000010
#define I2CONSET_STA            0x00000020

#define I2CONCLR_AAC            0x00000004  /* I2C Control clear Register */
#define I2CONCLR_SIC            0x00000008
#define I2CONCLR_STAC           0x00000020
#define I2CONCLR_I2ENC          0x00000040

#define I2DAT_I2C                       0x00000000  /* I2C Data Reg */
#define I2ADR_I2C                       0x00000000  /* I2C Slave Address Reg */
#define I2SCLH_SCLH                     0x00000080  /* I2C SCL Duty Cycle High Reg */
#define I2SCLL_SCLL                     0x00000080  /* I2C SCL Duty Cycle Low Reg */

extern int I2CInit( int I2cMode );
extern int I2CStart( void );
extern int I2CStop( void );
extern int I2CEngine( void );

#endif /* end __I2C_H */
/****************************************************************************
**                            End Of File
*****************************************************************************/