Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
RPi Pico
#15
Kad spomenusmo A/D, zatekla mi se ovde Nucelo-L476RG za potrebe nekugog drugog projekta i nesto gledam po dokumentaciji i nadjem da imaju "DFSDM" modul ... sta je sad pa to? ...

Digital Filter for Sigma-Delta modulators interface

Kopam dalje i nadjem da je to mnooogo pismena stvar bas specificno za A/D konvertere i vezano je upravo za ono "Pa gde smemo da pomenemo to sa svojih 200 ksps na AD" jer se ne radi samo o sample-rate nego proporcionalo zavisno i o rezoluciji uzorkovanja kod na primer sigma-delta A/D konvertera + mnogo bitna stvar sto je to seriski clokc-ovan stream preko dve data linije tako da je zgodan za galvansko razdvajanje jer je to uvek problem sa A/D konverterima i na to sve ima HW Sin2/3/4/5 filtere za procesiranje signala, sve sinhronizovano i radi preko DMA i interapta ... uradili su ga "boli glava", to je na primer ozbiljan pristup jedoj konkretnoj temi vezanoj za A/D konvertere i inzenjeri periferije su stvarno odradili domacinski posao ... To mi je interesatno za neke high-resolution primene ...

Imaju 1000x HW oversampling, sam uzorkuje i racuna ...

Ja kada sam sa pilulicom radio 1000x (tacnije 1024 jer mi bilo zgodnije za deljenje) oversamplling na 12bit 2.4MSPS neki se smejali ovde ... Big Grin

https://www.st.com/content/ccc/resource/..._DFSDM.pdf

Ovakve stvari sigurno nece skorije da imaju ARM kontroleri firme Apple ili Rasperry Pi, o tome se radi, ne mogu to da naprave tako lako niti im treba u zivotu Smile
Reply


Messages In This Thread
RPi Pico - by gorankg - 01-21-2021, 04:01 PM
RE: RPi Pico - by npejcic - 01-21-2021, 04:57 PM
RE: RPi Pico - by gorankg - 01-21-2021, 09:05 PM
RE: RPi Pico - by gorankg - 01-21-2021, 09:17 PM
RE: RPi Pico - by Khadgar2007 - 01-21-2021, 09:38 PM
RE: RPi Pico - by mikikg - 01-21-2021, 09:47 PM
RE: RPi Pico - by ddanijel - 01-21-2021, 10:50 PM
RE: RPi Pico - by mikikg - 01-21-2021, 11:12 PM
RE: RPi Pico - by ddanijel - 01-21-2021, 11:33 PM
RE: RPi Pico - by gorankg - 01-21-2021, 10:21 PM
RE: RPi Pico - by mikikg - 01-21-2021, 10:21 PM
RE: RPi Pico - by mikikg - 01-21-2021, 10:58 PM
RE: RPi Pico - by npejcic - 01-21-2021, 11:14 PM
RE: RPi Pico - by npejcic - 01-21-2021, 11:32 PM
RE: RPi Pico - by mikikg - 01-22-2021, 12:11 AM
RE: RPi Pico - by mikikg - 01-25-2021, 09:33 AM
RE: RPi Pico - by mikikg - 01-25-2021, 12:32 PM
RE: RPi Pico - by mikikg - 01-25-2021, 04:42 PM
RE: RPi Pico - by npejcic - 01-26-2021, 01:26 PM
RE: RPi Pico - by mikikg - 01-26-2021, 07:55 PM
RE: RPi Pico - by gorankg - 01-28-2021, 06:31 PM
RE: RPi Pico - by ddanijel - 01-26-2021, 06:06 PM
RE: RPi Pico - by npejcic - 01-26-2021, 06:13 PM
RE: RPi Pico - by ddanijel - 01-26-2021, 07:31 PM
RE: RPi Pico - by npejcic - 01-26-2021, 08:29 PM
RE: RPi Pico - by gorankg - 01-26-2021, 08:53 PM
RE: RPi Pico - by npejcic - 01-28-2021, 07:07 PM
RE: RPi Pico - by npejcic - 01-28-2021, 07:22 PM
RE: RPi Pico - by npejcic - 02-13-2021, 09:57 AM
RE: RPi Pico - by gorankg - 02-13-2021, 10:50 AM
RE: RPi Pico - by gorankg - 02-13-2021, 05:09 PM
RE: RPi Pico - by mikikg - 02-14-2021, 05:18 PM

Forum Jump:


Users browsing this thread: 17 Guest(s)