Step 4:  Programming the IO

To begin a new program, you should CLEAR the previous one.  You can do this with either the button or by typing clear.

Type the following program in the console window. (below)

DIR(15)= 1                      ' enable pin 15 as an output
WHILE X<30
  OUT(15) = X AND 1       ' drive pin 15 high when x is odd, low when x is even
  X=X+1
  WAIT(500)
LOOP

For the SuperPRO and PROplus, the LED is connected to P2(10).  Use the following

   FIO2DIR = &H2009C040   ' this is the DIR register for port 2, its also defined in #include <LPC17xx.bas>
   *FIO2DIR = 1<<10
   WHILE X<30
       P2(10) = X and 1
       X=X+1
       WAIT(500)
    LOOP

The LED on the PCB should pulse 15 times.

To stop a running program simply press the Stop button.

On to Step 5