Lpc2000

Thanks to everyone who replied.  I feel much better now knowing  what the problem was.  I had no idea that pins P0.2 and P0.3 had  no pull up resistors.  Also thanks for the link, Robert.

jstamos111 <jstamos111@...> wrote:        Hey guys,
  
  This problem has me completely baffled.  Hopefully you can help.
  
  I have an LPC2106 running on a board of my own design and am using 
  Keil tools to compile the code.  Here's my very short code:
  
  void main() {
  PINSEL0 &= 0x00000000;
  IODIR0 = 0xFFFFFFFF;
  IOSET0 = 0xFFFFFFFF;
  while(1);
  }
  
  The problems when I run this code all IO ports turn on except P0.2, 
  P0.3 and P0.26.  Any idea why?  I tried looking in the documentation 
  but couldn't find anything specific about these ports not working for 
  IO.  I thought maybe the problem was what I had the pins connected to 
  (a CPLD) so I made sure to put the connected CPLD pins as inputs and 
  even disconnected one pin completely and still the same problem.  I 
  have multiple boards and it does it for at least two of them.  
  
  Thoughts?  I'd appreciate anything since I don't know where to go w/ 
  this anymore.
  
  Thanks.
  
  
  
  
                  

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