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hello.I want to find a 40khz pulse by using the input capture in atmega16.I mean after the ICP pin receives the input,how can I achieve the frequncy of it? and is it possible to calculate the frequency?
thanks alot
thanks alot
how can I analyse a 40khz pulse by input capture in atmega16
- Thread starter electronical soccer
- Start date
Do you know how a frequency counter works? - http://en.wikipedia.org/wiki/Frequency_counter
You will need a very accurate timing signal to be able to define a period in which to count that 40 KHz pulse. You may easily need external conditioning circuitry to make the pulse into a signal that can be used as an input to the Atmega.
Notice that the method is to count pulses over a defined time. You seem to wish to be able to get the frequency from one pulse.
You will need a very accurate timing signal to be able to define a period in which to count that 40 KHz pulse. You may easily need external conditioning circuitry to make the pulse into a signal that can be used as an input to the Atmega.
Notice that the method is to count pulses over a defined time. You seem to wish to be able to get the frequency from one pulse.
