mtxi2c.h

mtx604在vxworks下的bsp源代码

/* mtxI2c.h - Motorola MTX I2C header file */

/* Copyright 1984-1999 Wind River Systems, Inc. */
/* Copyright 1998,1999 Motorola, Inc., All Rights Reserved */

/*
modification history
--------------------
01b,25feb99,dat  merge from motorola drop (SPR 25357)
01a,12apr98,srr  converted to C from assembly language.
*/

/*
This file contains I2C I/O related defines and structure templates.
*/

#ifndef __INCmtxI2ch
#define __INCmtxI2ch

#ifdef __cplusplus
extern "C" {
#endif

#define	I2C_DELAY	0x1000		/* small delay */
#define I2C_ERROR_CHECK	TRUE		/* enable error checking */

/* I2C control/status word definitions */

#define	I2C_PIN_MASK	0x80		/* I2C Controller PIN bit */
#define	I2C_LRB_MASK	0x08		/* I2C Controller LRB bit */
#define	I2C_START_CMD	0x45		/* I2C Controller Start Command */
#define	I2C_STOP_CMD	0x43		/* I2C Controller Start Command */

#define	I2C_SERIAL_OFF	0x80		/* I2C serial interface off */
#define	I2C_SERIAL_ON	0x40		/* I2C serial interface on */
#define	I2C_OWN_ADDR	((UCHAR)~((UCHAR) 0xCA))  /* I2C effective own addr */
#define	I2C_NW_SET_CLK	0xA0		/* I2C next write will set clk */
#define	I2C_CLK_RATE	0x1C		/* I2C system clk=12MHz;SCL=90 kHz */

#define	I2C_READ_BIT	0x01		/* I2C read bit */
#define	I2C_BUS_BUSY	0x01		/* I2C bus busy bit */
#define	I2C_ACK		0x40		/* I2C Acknowldege */

#ifdef __cplusplus
}
#endif

#endif /* __INCmtxI2ch */