mcf523x_i2c.h

MCS-51的一个Free小型操作系统,在KeilC中下编译工作

/*
 * These files are taken from the MCF523X source code example package
 * which is available on the Freescale website. Freescale explicitly 
 * grants the redistribution and modification of these source files.
 * The complete licensing information is available in the file 
 * LICENSE_FREESCALE.TXT.
 *
 * File:	mcf523x_i2c.h
 * Purpose:	Register and bit definitions for the MCF523X
 *
 * Notes:	
 *	
 */

#ifndef __MCF523X_I2C_H__
#define __MCF523X_I2C_H__

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

/* Register read/write macros */
#define MCF_I2C_I2AR     (*(vuint8 *)(void*)(&__IPSBAR[0x000300]))
#define MCF_I2C_I2FDR    (*(vuint8 *)(void*)(&__IPSBAR[0x000304]))
#define MCF_I2C_I2CR     (*(vuint8 *)(void*)(&__IPSBAR[0x000308]))
#define MCF_I2C_I2SR     (*(vuint8 *)(void*)(&__IPSBAR[0x00030C]))
#define MCF_I2C_I2DR     (*(vuint8 *)(void*)(&__IPSBAR[0x000310]))
#define MCF_I2C_I2ICR    (*(vuint8 *)(void*)(&__IPSBAR[0x000320]))

/* 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_I2ICR */
#define MCF_I2C_I2ICR_IE       (0x01)
#define MCF_I2C_I2ICR_RE       (0x02)
#define MCF_I2C_I2ICR_TE       (0x04)
#define MCF_I2C_I2ICR_BNBE     (0x08)

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

#endif /* __MCF523X_I2C_H__ */