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02-lpm3wait
This requires a 32768 Hz crystal (quartz) between XTAL1/2 pins.
Initialise and switch to 8MHz clock.
Then periodically blink a LED.
The delay code is in timers.asm
, and it uses LPM3 sleep (set to use the crystal) for waiting.
(Stolen from Matthias Koch's mecrisp example.)