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Lpc2000

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Message

Re: external interrupt edge sensitive don't work

2005-03-30 by jbhoudry

I have the same problem, impossible to put 1 in EXTPOLAR and EXTMODE 
for EINT0 (no problem for 1 to 3). I program all the recomendations 
from philips :
Before writing to the EXTMODE and EXTPOLAR registers,
1> Write 0x0 to VPBDIV 
2> Then write the desired value to EXTMODE or EXTPOLAR register. 
3> Then write the same value to VPBDIV ( additional step)
4> Restore the VPBDIV to the previously saved value or simply write 
   to the register again with the desired value.

I test on 2 LPC2294 the same, so now i use IT capture 0 timer 1 
instead of EINT0 for my quad external uart!


--- In lpc2000@yahoogroups.com, Sébastien MARION (UMM) 
<s.marion@u...> wrote:
> 
> sorry it's the UM_LPC21XX_LPC22XX_2.pdf manual
> 
> and my problem concern just the EINT0 interrupt, I can't setting it 
without reason. (always low level sensitive)
> 
> Sebastien
>   ----- Original Message ----- 
>   From: Mark Butcher 
>   To: lpc2000@yahoogroups.com 
>   Sent: Saturday, March 19, 2005 1:57 AM
>   Subject: [lpc2000] Re: external interrupt edge sensitive don't 
work
> 
> 
> 
> 
>   > I use the same user manual that the 210x serie.
>   > 
>   > Why are they register for select edge sensitive if they work 
only 
>   in level sensitive ??? (EXTPOLAR register)
>   > 
> 
> 
>   Hallo Sébastien
> 
>   In my user manual (LPC2106/2105/2104 USER MANUAL) there is no 
>   EXTPOLAR register so this must be specific to another processor 
type.
> 
>   Regards
> 
>   Mark Butcher
> 
> 
> 
> 
> 
> 
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