mcf537x_i2c.h

Freescale ColdFire MCF537x 家族的参考代码

/*
 * File:    mcf537x_i2c.h
 * Purpose: Register and bit definitions
 */

#ifndef __MCF537X_I2C_H__
#define __MCF537X_I2C_H__

/*********************************************************************
*
* I2C Module (I2C)
*
*********************************************************************/

/* Register read/write macros */
#define MCF_I2C_I2AR          (*(vuint8 *)(0xFC058000))
#define MCF_I2C_I2FDR         (*(vuint8 *)(0xFC058004))
#define MCF_I2C_I2CR          (*(vuint8 *)(0xFC058008))
#define MCF_I2C_I2SR          (*(vuint8 *)(0xFC05800C))
#define MCF_I2C_I2DR          (*(vuint8 *)(0xFC058010))

/* Bit definitions and macros for MCF_I2C_I2AR */
#define MCF_I2C_I2AR_ADR(x)   (((x)&0x7F)<<1)

/* Bit definitions and macros for MCF_I2C_I2FDR */
#define MCF_I2C_I2FDR_IC(x)   (((x)&0x3F)<<0)

/* Bit definitions and macros for MCF_I2C_I2CR */
#define MCF_I2C_I2CR_RSTA     (0x04)
#define MCF_I2C_I2CR_TXAK     (0x08)
#define MCF_I2C_I2CR_MTX      (0x10)
#define MCF_I2C_I2CR_MSTA     (0x20)
#define MCF_I2C_I2CR_IIEN     (0x40)
#define MCF_I2C_I2CR_IEN      (0x80)

/* Bit definitions and macros for MCF_I2C_I2SR */
#define MCF_I2C_I2SR_RXAK     (0x01)
#define MCF_I2C_I2SR_IIF      (0x02)
#define MCF_I2C_I2SR_SRW      (0x04)
#define MCF_I2C_I2SR_IAL      (0x10)
#define MCF_I2C_I2SR_IBB      (0x20)
#define MCF_I2C_I2SR_IAAS     (0x40)
#define MCF_I2C_I2SR_ICF      (0x80)

/* Bit definitions and macros for MCF_I2C_I2DR */
#define MCF_I2C_I2DR_DATA(x)  (((x)&0xFF)<<0)

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

#endif /* __MCF537X_I2C_H__ */