MPR121 access to raw Data?

Janosch89 — Fri, 21 Jan 2022 13:39:50 GMT

Hi,

I'm currently working on a project implying 4 MPRs' working in a very noisy environment, and I have some troubles setting up all the filter stuff(FFI, SFI, MHD, NHD, NCL...).

It would really help me if I could plot the raw data income, but I don't think this is possible because there are no dedicated registers for this?

Did I overlook something, or is there only access to baseline and filtered data?

Thx a lot,

Janosch

Re: MPR121 access to raw Data?

diazmarin09 — Fri, 21 Jan 2022 18:51:40 GMT

Hello Janosch,

I am afraid that the touch acquisition takes a few different parts of the system in order to detect touch. All the filters are tightly coupled.

In this case, have you tried to configure the device based on the AN3944, MPR121 Quick Start Guide - Application Notes? The document describes what each of the defaults do and recommendations for variations.

Finally, note that this device was transferred to Resurgent Semiconductor on 10-Jul-2015.

I hope this information helps.

Regards,

David

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MPR121 access to raw Data?

Re: MPR121 access to raw Data?