GPIO-Library

• usage:

  GPIO # LIB:GPIO; ~ import GPIO library
  GPIO # INIT:<BoardMode>; ~ BCM or BOARD
  
  GPIO ? SETUP:<PIN>|<Mode>; ~ IN or OUT
  
  GPIO ? SET:<PIN>|<value>; ~ LOW or HIGH
  

• write to Pins:

  GPIO # LIB:GPIO;
  GPIO # INIT:BCM;
  
  GPIO ? SETUP:4|OUT;
  GPIO ? SET:4|HIGH;
  

• read from Pins:

  output # INT:0;
  GPIO # LIB:GPIO;
  GPIO # INIT:BCM;
  
  GPIO ? SETUP:4|IN;
  GPIO ? READ:4|output