topic Re: Application Note or Example for Glitch Filter in MPC5xxx

Application Note or Example for Glitch Filter

berat24 — Tue, 30 Nov 2021 07:28:12 GMT

Hello everyone;

I am running on MPC5777C. Is there any application note or example code for Input Glitch Filter peripheral?

When I looked at, I could not find.

Sincerely.

Re: Application Note or Example for Glitch Filter

PetrS — Tue, 30 Nov 2021 19:34:37 GMT

Hi,

no AN is available, so refer to IGF chapter of the device Reference Manual. Simple example is given e.g. in https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5777C-eMIOS-IGF-test-GHS614/ta-p/1101321

BR, Petr

Re: Application Note or Example for Glitch Filter

berat24 — Wed, 01 Dec 2021 11:35:47 GMT

Hi,

Thank you for answering my question.

I cannot understand how I am able to adjust blanking period in windowing filter. As far as I see, there is no any information about that on reference manuel.

Good works.

Re: Application Note or Example for Glitch Filter

PetrS — Thu, 02 Dec 2021 08:43:13 GMT

Hi,

windowing filter is described in chapter 39.6.2.1 of the RM.
The rising and/or falling threshold registers (RTHR, FTHR) define blanking period in terms of filter counter clock (module clock / (FPRE + 1)).

BR, Petr