Atmel AVR timer/counter examples

Here’s the catch: the timer/counter is capable of operating on a completely hardware level, no software interaction required. A nice explanation is given here (section 2). This page starts with an introduction using a software counter. Which shows how tedious that is, especially counting the clock durations yourself.

Another page at AVRfreaks here deals exclusively with the software implementation, although using the timer/counter registers for counting. This is useless and horribly wrong, that’s not how timers/counters with “output compare” capabilities should be used! The dangerous part is that this article doesn’t even mention the hardware-only implementation.


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