Hello all. I've been having the same issue.
I need to be able to measure frequencies from 1Hz.
My core clock is 160MHz, Emios Mcl Clk Div Val is 256, Emios Mcl Master Bus Prescaler is DIV_16. For Emios Prescaler I tried setting it to both EMIOS_PRESCALER_DIVIDE_1 and EMIOS_PRESCALER_DIVIDE_16, but it doesn't make any difference.
So the total frequency for the counter is 160.000.000/256/16 = 39062.5 Hz
When measuring the period between two rising edges at 1000 Hz, the period is 39 as expected. At 100 Hz, the period is about 390 as expected. At 10 Hz I start getting issues because instead of the expected period of about 3900, I get random results. At this point I'm still far from the Emios Mcl Default Period which is set to 65535. I'm using eMIOS0 CH6 which is G type and Counter bus F.
I appreciate any suggestions. Kind regards.