Reserved Hardware

On the ATmega128RFA1, SNAP uses Timer 2 and Timer 4 internally.

Timer 2 is used for timed sleep and can be reused by the user if the node will not be using timed sleep. Timer 4 provides the 1 millisecond “heartbeat.”


Do not peek()/poke() these timers!

The remaining timers are available for use by your scripts (for example, PWM).