i want to calculate the number of pulse of a signal, u think that is possible with this example by using juste only an input +interruption and than count the number of rising edge ....?
Counting the pulses that way will work when the frequency is not too high (< 2-3kHz). At higher frequencies you will need a counter. For your current project, using a counter (that can be reset by pressing a switch) will make some things easier.
