How to use a timer most efficently for finding pings/second

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Im writing a code that uses a pressure sensor. The code automatically transfers the pressure sensor input too force and once then force exceeds a certain amount it is to take a "ping". I've thought about using a timer to do this by having the timer run and whenever there is a ping the timer restarts and the time between the pign before last and the most recent ping is saved to an array before being averaged to find the pings/sec. My problem is that I dont know how to use timers, how should I go about using them in this way and is this way the best way to go about doing so?

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Star Strider
Star Strider 2019-12-7
One option for recording the times would be to use the clock function. Then use the etime function to recover the elapsed times in seconds and fractions of seconds afterwards.

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