Hi Gil,

the code depends from the frequency range, the conversion time and the resolution.

E.g. my frequency counter was designed to measure 100kHz ... 100MHz with 4 digits. I generate the gate time by one timer and count the input signal by the other. At first I measure with a prescaler of 1000 for 10ms. Then I select the right range depending from this measuring and measure for 100ms and display the result.

For better resolution the gate signal should not be generated by software.

For lower frequency you should switch from frequency count to period measuring and calculate then the frequency.


Peter