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Lpc2000

Index last updated: 2026-04-28 23:31 UTC

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RE: [lpc2000] Trouble with P0.2 as GPIO

2004-07-27 by Curt Powell

Read the I2C documentation in the user manual.  P0.02 and P0.03 are open
drain pins.  You need a pull-up.  (Been there, done that, got the
T-shirt!)

-----Original Message-----
From: rkd0930home [mailto:rkd0930@...] 
Sent: Tuesday, July 27, 2004 6:46 AM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Trouble with P0.2 as GPIO


Hi All,

I am having difficulty with controlling pin P0.2 as a GPIO output 
signal. I am successfully controlling several other pins on my board. 
I have set bit 4 and 5 of PINSEL0 to zero. I have set bit 2 of IO0DIR 
to 1 and I have set bit 2 of IO0SET to 1. P0.2 stays at zero. I have 
used the same procedure on other pins with success. Is there 
something I am missing?  

Thanks,
Bob Davis 




 
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