Fir Filter

[IaCa_4674211]

Using moving average filters for hard filtering. – controlpaths.

Could this be implemented on the Psoc?

Cheers

[VenkataD_41]

Hi,

What is the PSoC family that you are using?

In case if you are using PSOC 6, you can definitely do this using the CMSIS DSP library that you can easily combine with PSoC 6 libraries. Please refer the following page:

CMSIS DSP Software Library

In case if you are using PSoC 4 device, you have to implement this logic in either firmware or using UDB blocks.

If you are using PSoC 5Lp device, you can use the dedicated Digital Filter block inside PSoC

https://www.cypress.com/documentation/component-datasheets/digital-filter-block-dfb-assembler

Thanks

Ganesh

[IaCa_4674211]

Hi Ganesh, I am using PSOC 5LP, but looks to me like the PSOC 6 with bluetooth would be useful for interfacing with an Android device for control,

Cheers

[odissey1 · Accepted solution]

IaCa,

PSoC5 Filter component has both low pass and band-stop filters build-in, with better performance than in the link above.

Please bear in mind that in that above article the FIR filter code is also incorrect:

assign os14_data = (rs14_pipe1>>>3) + (rs14_pipe2>>>3) + (rs14_pipe3>>>3) + (rs14_pipe4>>>3) + (rs14_pipe5>>>3) + (rs14_pipe6>>>3) + (rs14_pipe7>>>3) + (rs14_pipe8>>>3);

For example, the filter output equals 8 when the input value is 15(!)

/odissey1