mcf5445x_i2c.h

来自「Freescale MCF5445evb 参考测试代码」· C头文件 代码 · 共 51 行

/*
 * File:    mcf5445x_i2c.h
 * Purpose: Register and bit definitions
 */

#ifndef __MCF5445X_I2C_H__
#define __MCF5445X_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 I2AR */
#define MCF_I2C_I2AR_ADR(x)     (((x)&0x7F)<<1)     

/* Bit definitions and macros for I2FDR */
#define MCF_I2C_I2FDR_IC(x)     (((x)&0x3F))    

/* Bit definitions and macros for 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 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 I2DR */
#define MCF_I2C_I2DR_DATA(x)    (x)     

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

#endif /* __MCF5445X_I2C_H__ */