I am outputting a square wave using a Loop Timer configured to use milliseconds (mSec) to control the period. It is set to wait for 4 ms on each loop iteration. For some reason it takes 1 ms for the first output to appear. However, when I configure the Loop Timer to use microseconds (uSec), and tell it to wait 4000 µs, the delay of 1 ms is not there. Why?
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