Hi all,

Could you please tell me how do i perform computation with ADC outputs? I need to write
commands in C. I know that ADC outputs can be accessbile through ADC result register. Incase if
i do some computation with the results in ADC,should i get the value of ADCresult register in
hexa, or binary or decimal?

For example, i want the result of realtime voltage input, it would be in ADC result register,
can i directly use the ADCresult register value by assinging it as a variable with Uint16 and
make use of it in my calculation??? Is the following command right?

Uint16 V= AdcRegs.ADCRESULT0;

what is the meaning of this command, I saw it in TI's example. Why should we right shift the
results by 4digits.?
Can any one tell me?
Voltage[ConversionCount] = AdcRegs.ADCRESULT1 >>4;

thanks in advance.

regards
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Hi,

If you check spru060 (nowadays it is on revision D, I believe), you
will see that ADCRESULTn register is a 16 bit register and the first 4
bits (from 0 to 3) are reserved.
The adc conversion is placed on 12 bits: from 4 to 15.
If you use the command you mention "Uint16 V= AdcRegs.ADCRESULT0;",
you are going to have a wrong conversion result. The shift is really
necessary.

Regards
Gloria

--- In c...@yahoogroups.com, naayagi04@... wrote:
>
> Hi all,
> 
> Could you please tell me how do i perform computation with ADC
outputs? I need to write commands in C. I know that ADC outputs can be
accessbile through ADC result register. Incase if i do some
computation with the results in ADC,should i get the value of
ADCresult register in hexa, or binary or decimal?
> 
> For example, i want the result of realtime voltage input, it would
be in ADC result register, can i directly use the ADCresult register
value by assinging it as a variable with Uint16 and make use of it in
my calculation??? Is the following command right?
> 
> Uint16 V= AdcRegs.ADCRESULT0;
> 
> what is the meaning of this command, I saw it in TI's example. Why
should we right shift the results by 4digits.?
> Can any one tell me?
> Voltage[ConversionCount] = AdcRegs.ADCRESULT1 >>4;
> 
> thanks in advance.
> 
> regards
>

------------------------------------

Check Out Industry's First Single-Chip, Multi-Format, Real-Time HD Video Transcoding Solution
for Commercial & Consumer End Equipment: www.ti.com/dm6467

You can post a message or access and search the archives of this group on DSPRelated.com:
http://www.dsprelated.com/groups/c28x/1.php

_____________________________________