PIC18F2xK42

[Zuffa Jan]

A neakumuluje sa tymto sposobom aj chyba?

j.

-----Original Message-----
From: Hw-list [mailto:hw-list-bounces na list.hw.cz] On Behalf Of Jan Waclawek
Sent: Thursday, February 08, 2018 3:41 PM
To: HW-news
Subject: Re: PIC18F2xK42

Aha no vlastne ano, dakujem za vysvetlenie.

Takze vysledok v ACC este treba podelit tym 2^ADCRS, ale to zrejme tiez urobi hardware medzi ADACC a ADFLTR. Pekne.

wek



----- Original Message ---------------

Subject: Re: PIC18F2xK42
   From: Hynek Sladky <econf na centrum.cz>
   Date: Thu, 8 Feb 2018 15:14:31 +0100
     To: HW-news <hw-list na list.hw.cz>

>Akumulator obsahuje 2^ADCRS nasobek hodnoty. Prumerna hodnota se odecte
>(- ACC/2^ADCRS) a prida se aktualni prevod (S).
>IMHO to je spravne. Aspon to takto v nekolika projektech pouzivam a 
>funguje to ;-)
>
>
>Hynek Sladky
>
>
>Dne 8.2.2018 v 14:35 Jan Waclawek napsal(a):
>> No tak potom prosim vyskusaj aj ten LPF.
>>
>> V Tab 38-2 sa pise, ze
>> ACC := S + ACC - ACC/2^ADCRS
>> co je podla mna blbost, lebo takto by ta akumulovana hodnota rastla 
>> do nekonecna, a spravne ma byt ACC := S/2^ADCRS + ACC - ACC/2^ADCRS
>>
>> to je potom skutocne LPF tak ako ho bezne pouzivam, a to bez 
>> namacania, to by som bral (aj ked teda to obmedzenie ADCRS na 3 bity 
>> je dost silne obmedzujuce, to je skoda).
>>
>> wek

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