base 16 macro definitions

[Tom Backton]

Sometimes I see header files in which macro definitions use base 16 numbers even when it doesn't seem to matter. Is there a particular reason for this? (maybe easier adaptation of the numbers to hardware input control bits? )

[Bazzy]

Two hexadecimal digits are equal to a byte
And being 16 = 2⁴ using hex is simpler when working with flags

http://www.cplusplus.com/doc/hex.html

[Tom Backton]

That's what I thought...thanks.