Lpc2000

How necessary is it for me to use pullups while implementing P0.3 as EINT1?

Markus Meng <meng.engineering@...> wrote:Hi,

I2C normally needs pullup's regardless of the implementation ...

Markus

nevelian schrieb:
> 
> Hi,
> 
> I want to use P0.2 (SCL) & P0.3 (SDA) as GPIO, and are using the 
> following code;
> 
>         PINSEL0 = 0x00000005;                               
>       PINSEL1 = 0;
>       IODIR = 0xFFFFFFFF;
>       IOSET = 0xFFFFFFFF;
> 
> According to the datasheet I should have setup P0.0 & P0.1 as Uart 
> pins and the rest as GPIO.
> 
> The UART works, as do GPIO P0.4 - P0.31, but why aren't P0.2 & P0.3 
> outputing high (or do they need pullups)?
> 
> Rob
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 

-- 
Mit freundlichen Gr�ssen
Markus Meng

************************************************************************
** Meng Engineering        Telefon    056 222 44 10                   **
** Markus Meng             Natel      079 230 93 86                   **
** Bruggerstr. 21          Telefax    056 222 44 34                   **
** CH-5400 Baden           Email      markus.meng@... **
**                         Web        www.meng-engineering.ch         **
************************************************************************
** You cannot create experience. You must undergo it. Albert Camus    **




Yahoo! Groups SponsorADVERTISEMENT


---------------------------------
Yahoo! Groups Links

   To visit your group on the web, go to:
http://groups.yahoo.com/group/lpc2000/
  
   To unsubscribe from this group, send an email to:
lpc2000-unsubscribe@yahoogroups.com
  
   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. 



		
---------------------------------
Do you Yahoo!?
 Yahoo! Mail - You care about security. So do we.

[Non-text portions of this message have been removed]