nrf52 or dsp processor+nrf8002 -i buy on sunday(tomorrow) a kit

RE: nrf52 or dsp processor+nrf8002 -i buy on sunday(tomorrow) a kit

awneil — Sat, 20 Aug 2016 20:46:35 GMT

You really haven't given enough information on which to base any considered opinion!

So I'll just say, "go with the nRF52" - a simple tone detection shouldn't be hard...

RE: nrf52 or dsp processor+nrf8002 -i buy on sunday(tomorrow) a kit

etamar — Sat, 20 Aug 2016 17:47:01 GMT

Thank you, I still try to gather all the pieces

About the power consumption, do you have any insight?

RE: nrf52 or dsp processor+nrf8002 -i buy on sunday(tomorrow) a kit

awneil — Sat, 20 Aug 2016 16:56:45 GMT

You cannot upload code to an nRF8002.

As usual, full details - including available dev kits - are on the Product Page on the Nordic site:

www.nordicsemi.com/.../nRF8002

RE: nrf52 or dsp processor+nrf8002 -i buy on sunday(tomorrow) a kit

etamar — Sat, 20 Aug 2016 12:39:50 GMT

The tone is changing in that range and is unknown

RE: nrf52 or dsp processor+nrf8002 -i buy on sunday(tomorrow) a kit

peterz — Sat, 20 Aug 2016 10:51:09 GMT

if "recognize some tone" means you want to detect the presence of a specific frequency then FFT might be a bit of overkill - you could just sample the values from your microphone, multiply the values with prepared coefficients in a table and sum up the results to get the amplitude. No DSP required.