' Name        : BUTX2.pbp
' Compiler    : PICBASIC PRO Compiler 2.6
' Assembler   : PM or MPASM
' Target PIC  : 28/40-pin PIC types compatible with LAB-X2 board
' Hardware    : LAB-X2 Experimenter Board
' Oscillator  : 4MHz external crystal
' Keywords    : IF THEN
' Description : PICBASIC PRO program to show a button press on LED.
'

' Define LOADER_USED to allow use of the boot loader.
' This will not affect normal program operation.
Define LOADER_USED 1

   OPTION_REG = $7f     ' Enable PORTB pull-ups
   TRISB = %11111000    ' Set PORTB.0-2 (LEDs) to output, 3-7 to input

mainloop:       
   PORTB = 0            ' Turn off LEDs

   ' Check any button pressed to toggle on LED
   If PORTB.6 = 0 Then  ' If 3rd button pressed...
      PORTB.2 = 1       ' Turn on 3rd LED
   Endif
   If PORTB.5 = 0 Then  ' If 2nd button pressed...
      PORTB.1 = 1       ' Turn on 2nd LED
   Endif
   If PORTB.4 = 0 Then  ' If 1st button pressed...
      PORTB.0 = 1       ' Turn on 1rst LED
   Endif
   Pause 2              ' Pause 2mS
   Goto mainloop        ' Do it forever

   End