condComp.txt

\ *********************************************************************
\ Conditional compilation
\    Filename:      condComp.txt
\    Date:          16/06/2020
\    Updated:       16/06/2020
\    File Version:  1.0
\    MCU:           ARDUINO all models
\    Copyright:     Marc PETREMANN
\    Author:        Marc PETREMANN
\    GNU General Public License
\ *********************************************************************

\ the word ?\ is a conditionnal comment. Usage:
\ true  ?\ 2 3 + .
\ false ?\ 4 5 + .


: ?\  ( fl --- )
  0=
  if
    postpone \
  then
; immediate


\ Practical example for ARDUINO:
-blink
marker -blink

true  constant NANO
false constant MEGA

\ require pinsDefinitions.txt
37 constant PORTB
flash
MEGA ?\  PORTB %10000000 defPIN: LED  ( PB7 pin 13 )
NANO ?\  PORTB %00100000 defPIN: LED  ( PB5 pin 13 )
ram

\ in interpet mode:
LED output 
LED high
1000 ms
LED low