Hello you all!

I need to calculate hot much time it takes for an input to go from LOW to 
HIGH and then to LOW again. Basically, I want to know the period of a 
square wave generated by the LM555 timer.

I am using Qt Creator and programming in C++.

I am having trouble at programming this code in C++ for the beaglebone.

Do you guys have any piece of code in C++ that may help me?


Than you very much


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