#ifndef _USE_BITS_H_
#define _USE_BITS_H_
/***********************************************************
*   聲明庫說明：系統位段操作函數庫                         *
*   版本：      v1.00                                      *
* -------------------------------------------------------- *
*  [版本歷史]                                              *
*      v1.00   包含了從32位到8位對16位8位4位1位的各種映射  *
*              允許通過功能宏定義中定義的宏拆分任意的地址  *
* -------------------------------------------------------- *
*  [使用說明]                                              *
*          1、該頭文件屬于基層頭文件。                     *
*          2、兼容32位16位8位單片機系統。                  *
*          3、飽含該頭文件以后，可以通過功能宏定義中定義的 *
*             宏拆分任意地址，也可以直接使用后面自定義的位 *
*             段類型定義新的位段變量或者指針。             *
*          4、需要注意的是，使用功能宏定義中的宏只是將指定 *
*             變量的地址強行邦定為指定類型的位段，并不真正 *
*             分配一個地址空間，如果指定類型的位段長度和地 *
*             址實際長度不相同將會導致不可預期的后果。     *
***********************************************************/

/********************
*   系 統 宏 定 義  *
********************/

/*------------------*
*   常 數 宏 定 義  *
*------------------*/
    
/*------------------*
*   功 能 宏 定 義  *
*------------------*/
# define SET_BIT8_FORMAT(Addr)     (*((volatile BYTEBIT *)&Addr))
# define SET_BYTE_DIV_2(Addr)      (*((volatile BYTE2HBYTE *)&Addr))

# define SET_BIT16_FORMAT(Addr)    (*((volatile WORDBIT *)&Addr))
# define SET_WORD_DIV_2(Addr)      (*((volatile WORD2BYTE *)&Addr))
# define SET_WORD_DIV_4(Addr)      (*((volatile WORD2HBYTE *)&Addr))

# define SET_BIT32_FORMAT(Addr)    (*((volatile DWORDBIT *)&Addr))
# define SET_DWORD_DIV_2(Addr)     (*((volatile DWORD2WORD *)&Addr))
# define SET_DWORD_DIV_4(Addr)     (*((volatile DWORD2BYTE *)&Addr))
# define SET_DWORK_DIV_8(Addr)     (*((volatile DWORD2HBYTE *)&Addr))

/********************
* 結 構 體 定 義 區 *
********************/

/*------------------*
*   8位變量位映射   *
*------------------*/
typedef struct BYTE_BIT
{
    unsigned BIT0:1;
    unsigned BIT1:1;
    unsigned BIT2:1;
    unsigned BIT3:1;
    unsigned BIT4:1;
    unsigned BIT5:1;
    unsigned BIT6:1;
    unsigned BIT7:1;
}BYTEBIT;

/*------------------*
*   16位變量位映射  *
*------------------*/
typedef struct WORD_BIT
{
    unsigned BIT0:1;
    unsigned BIT1:1;
    unsigned BIT2:1;
    unsigned BIT3:1;
    unsigned BIT4:1;
    unsigned BIT5:1;
    unsigned BIT6:1;
    unsigned BIT7:1;
    
    unsigned BIT8:1;
    unsigned BIT9:1;
    unsigned BIT10:1;
    unsigned BIT11:1;
    unsigned BIT12:1;
    unsigned BIT13:1;
    unsigned BIT14:1;
    unsigned BIT15:1;
}WORDBIT;

/*------------------*
*  32位變量位映射   *
*------------------*/
typedef struct DWORD_BIT
{
    unsigned BIT0:1;
    unsigned BIT1:1;
    unsigned BIT2:1;
    unsigned BIT3:1;
    unsigned BIT4:1;
    unsigned BIT5:1;
    unsigned BIT6:1;
    unsigned BIT7:1;
    
    unsigned BIT8:1;
    unsigned BIT9:1;
    unsigned BIT10:1;
    unsigned BIT11:1;
    unsigned BIT12:1;
    unsigned BIT13:1;
    unsigned BIT14:1;
    unsigned BIT15:1;
    
    unsigned BIT16:1;
    unsigned BIT17:1;
    unsigned BIT18:1;
    unsigned BIT19:1;
    unsigned BIT20:1;
    unsigned BIT21:1;
    unsigned BIT22:1;
    unsigned BIT23:1;
    
    unsigned BIT24:1;
    unsigned BIT25:1;
    unsigned BIT26:1;
    unsigned BIT27:1;
    unsigned BIT28:1;
    unsigned BIT29:1;
    unsigned BIT30:1;
    unsigned BIT31:1;
}DWORDBIT;

/*------------------*
*  32位變量4分映射  *
*------------------*/
typedef struct DWORD_BYTE
{
    unsigned BYTEA:8;
    unsigned BYTEB:8;
    unsigned BYTEC:8;
    unsigned BYTED:8;
}DWORD2BYTE;

/*------------------*
*  32位變量2分映射  *
*------------------*/
typedef struct DWORD_WORD
{
    unsigned WORDA:16;
    unsigned WORDB:16;
}DWORD2WORD;

/*------------------*
*  32位變量16分映射 *
*------------------*/
typedef struct DWORD_HBYTE
{
    unsigned BYTEAL:4;
		unsigned BYTEAH:4;
		
		unsigned BYTEBL:4;
		unsigned BYTEBH:4;
		
		unsigned BYTECL:4;
		unsigned BYTECH:4;
		
		unsigned BYTEDL:4;
		unsigned BYTEDH:4;
		
}DWORD2HBYTE;

/*------------------*
* 16位變量2分映射   *
*------------------*/
typedef struct WORD_BYTE
{
    unsigned BYTEA:8;
    unsigned BYTEB:8;
}WORD2BYTE;

/*------------------*
*  16位變量4分映射  *
*------------------*/
typedef struct WORD_HBYTE
{
    unsigned BYTEAL:4;
		unsigned BYTEAH:4;
		
		unsigned BYTEBL:4;
		unsigned BYTEBH:4;
}WORD2HBYTE;

/*------------------*
*  8位變量2分映射   *
*------------------*/
typedef struct BYTE_DIV2
{
    unsigned BYTEAL:4;
    unsigned BYTEAH:4;
}BYTE2HBYTE;

#endif