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Discussion Groups | LPC900 | P89LPC9401 programming

Find help, specifications and source code for the LPC900. The LPC900 challenges Microchip and AVR based on the worlds most popular 8-bit architecture the 80C51. With a 2-clock core the LPC900 series is a high performance, very flexible and low cost 8-bit microcontroller family. Designers using or interested in these devices are encouraged to share their know-how and ask questions.

P89LPC9401 programming - anand ram - Mar 3 2:06:03 2009

hi
 this the first time i am using this controller P89LPC9401. i write a simple program to blink LED but it not work. i used P00 and P21 and configered as quasi bidirectional. i checked port pin it's always high. please help me.
 
 
thanks & regards
S. Anans.
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Re: P89LPC9401 programming - viren - Mar 3 3:08:30 2009

hi,
configure as open drain mode and check it.

Thanks & regards,
Viren

--- On Tue, 3/3/09, anand ram wrote:
From: anand ram
Subject: [lpc900_users] P89LPC9401 programming
To: l...@yahoogroups.com
Date: Tuesday, 3 March, 2009, 12:35 PM

hi
 this the first time i am using this controller P89LPC9401. i write a simple program to blink LED but it not work. i used P00 and P21 and configered as quasi bidirectional. i checked port pin it's always high. please help me.
 
 
thanks & regards
S. Anans.

Add more friends to your messenger and enjoy! Invite them now.

Share files, take polls, and make new friends - all under one roof. Go to http://in.promos.yahoo.com/groups/
______________________________
TI's C2000™ microcontrollers controlSUITE™ Desktop gives you instant access to all supporting software libraries, training, collateral, and more!


(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )

Re: P89LPC9401 programming - Harshal Doshi - Mar 3 5:53:37 2009

USE PUSH PULL configuration[current sourcing mode] or open drain[LED pull
up- current sinking mode]
More details in port configuration of usermanual
Regards

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On Tue, Mar 3, 2009 at 12:35 PM, anand ram wrote:

> hi
> this the first time i am using this controller P89LPC9401. i write a
> simple program to blink LED but it not work. i used P00 and P21 and
> configered as quasi bidirectional. i checked port pin it's always high.
> please help me.
> thanks & regards
> S. Anans.
>
> ------------------------------
> Add more friends to your messenger and enjoy! Invite them now. --
Doshi Harshal



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