Measuring a sinewave

[montoya]

Posted on May 03, 2013 at 11:19

Hello everyone, I am trying to measure a sinusoid signal via ADC. I used timer's trigger to obtain different samples. But i don't know how i can

synchronize

the trigger's time with the frecuency of the signal, to obtain a good measure.

And

then, how

I have

to process the data

that

I have

in

an array in

the

DMA

to obtain

the necessary information

?

Thanks

#adc-sine-measure

[Andrew Neil]

Posted on May 03, 2013 at 14:25

''I am trying to measure a sinusoid signal via ADC''

What, exactly, are you trying to measure: Peak amplitude? Peak-to-Peak amplitude? RMS amplitude? Frequency? Period? or what??

''how i can

synchronize

the trigger's time with the frecuency of the signal''

Google ''Zero-Crossing''...

[montoya]

Posted on May 06, 2013 at 09:28

I want to mesure peak amplitude and frecuency.