macros to extract certaing number of bits from a variable

Macros
#define	GET_LOW_NIBBLE(x)
#define	GET_HIGH_NIBBLE(x)
#define	GET_HIGH_BYTE(x)

Detailed Description

Macro Definition Documentation

GET_HIGH_BYTE

#define GET_HIGH_BYTE

(

x

)

Value:

( ( x ) >> 8u )

get hte MSB from and 16 bit variable

GET_HIGH_NIBBLE

#define GET_HIGH_NIBBLE

(

x

)

Value:

( ( x ) >> 4u )

get the four most significant nibble

GET_LOW_NIBBLE

#define GET_LOW_NIBBLE

(

x

)

Value:

( (x)&0xFu )

get the less significant bits