def.h

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#ifndef __DEF_H__
#define __DEF_H__

#define U32 unsigned int
#define U16 unsigned short
#define S32 int
#define S16 short int
#define U8  unsigned char
#define S8  char

typedef union{
    U32 u32;
    U8 u8[4];
}UN_UL;

typedef union{
    U16 u16;
    U8 u8[2];
}UN_UI;

#define TRUE    1   
#define FALSE   0

#define R_ERROR unsigned char
#define R_NO_ERROR 0 // R_... means return value
#define R_IS_ERROR 1

#endif /*__DEF_H__*/

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