Simulink eQEP block for frequency calculation with F28069 MCU

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Khashayar Olia
Khashayar Olia on 29 Nov 2020
Hi,
I'm using eQEP block to read the frequency input of a signal and having some difficulties. Here are the Simulink settings for eQEP block:
I'm reading Position Counter (QPOSCNT) and here is the logic to calculate the frequency:
It reads the frequency of input signal correctly when it's above ~200Hz and for any value smaller than 200Hz the reading is not accurate. For values below 20Hz it's totally off. Any help would be appreciated.
Thanks,
--Kash

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