How a timer update interrupt works
Video lesson · in the full course
A timer update interrupt fires each time the counter wraps around. It runs a piece of code at an exact, fixed rate, with no checking in the loop.
What this lesson covers
- The overflow (update) event
- The interrupt frequency formula
- The repetition counter
- Settings for a 1 ms tick
By the end, you can pick the prescaler and period for an exact tick, for example one interrupt every millisecond.
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