Lpc2000

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 */
> >Is this the same as you have?
> >Best Regards
> >Søren Hansen
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