Lpc2000

Not sure but I think P0.2 and P0.3 have no internal pull-up resistors
because they are for the I2C interface.  You need to have external pull-ups.
Andy

-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com] On Behalf Of
jstamos111
Sent: 20 May 2006 19:36
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Broken IO Pins?

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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