Lpc2000

Ofcourse it'd help if I was reading the 2106 manual... was looking in the
2119 version, however I imagine the same applies if you're seeing problems
with that particular pin... p0.26 is evidently used by Philips for some
nefarious purpose (shows as reserved in the 2119 manual for the pinsel
register in the pin connect block section).

Andy

-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf
Of John Stamos
Sent: 22 May 2006 13:52
To: lpc2000@yahoogroups.com
Subject: Re: [lpc2000] Broken IO Pins?


Can someone recommend a good resistor value to use for the pullup resistor?

  Much Thanks.

Robert Adsett <subscriptions@...> wrote:        At 06:36
PM 5/20/06 +0000, 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.

  Well P0.2 & P0.3 are open collector so they'll need pull-ups.  See
  http://www.open-research.org.uk/ARMuC/LPC2100Tips.html

  P0.26 I don't see anything off hand unless you have JTAG enabled.

  Robert

  " 'Freedom' has no meaning of itself.  There are always restrictions,   be
  they legal, genetic, or physical.  If you don't believe me, try to chew a
  radio signal. "  -- Kelvin Throop, III
  http://www.aeolusdevelopment.com/



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