Bala:
My apologies and thanks for your response. Both jumpers are in. I
finally got the ADC to work by doing a complete AD0CR setting with
start, waited for the done, read the value, and I was in business.
Regards,
Steve
--- In lpc2000@yahoogroups.com, "balakumar chinuswamy"
<cbalakumarbe@r...> wrote:
>
> There will be two jumpesr J11 and J2 to make the internal ADC to
> get the input VIN in MCB2130.
>
> regards
> bala
>
> On Thu, 02 Jun 2005 soren_t_hansen wrote :
> >--- In lpc2000@yahoogroups.com, "stiffsoft" <stiffsoft@s...>
wrote:
> >> Hello,
> >> Does anyone have any C code that actually reads the MCB2130
> >> hardware ADC on AIN1 (the potentiometer tied to P0.28) they
would be
> >> willing to share? I have tried the Keil code, the Hitex example
> >> code, manipulating bit values, etc., for most of 2 days and
cannot
> >> get ADC to return a value that I can display via COM1 on the
> >> MCB2130. The code I have been exploring uses hardware
continuous
> >> conversions rather that software interrupt driven conversions.
I
> >> really thought the hardware conversion would be easier to
implement
> >> than the software.
> >> I verified that the voltage varies at P0.28 with a DMM when I
> >> adjust the pot, but I get nothing but 0 from AD0DR.
> >> I contacted Keil via telephone and didn't get much help
(other
> >> than suggesting I run it in the simulator -- more stuff to
learn).
> >> I also sent my source code to their support center, but have not
> >> received a response.
> >> Any suggestions (or simple code hints) will be greatly
> >> appreciated.
> >>
> >> Steve Stiff
> >Have you made sure that the J2 jumper is set? Also make sure that
you
> >use the lpc213x.h instead of the lpc21xx.h
> >I'm using the following code as a small example:
> >AD0CR |= 0x01200000; /* Start A/D Conversion
*/
> > do {
> > val = AD0DR; /* Read A/D Data
Register */
> > } while ((val & 0x80000000) == 0); /* Wait for end of A/D
> >Conversion */
> > AD0CR &= ~0x01000000; /* Stop A/D
Conversion */Show quoted textHide quoted text
> >Is this the same as you have?
> >Best Regards
> >Søren Hansen
> >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
> >.
> >
>
>
> [Non-text portions of this message have been removed]