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zookzook/disable_watch_dog

Created January 25, 2013 14:03
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Arduino sleep without watch dog. The most example for putting the Arduino into sleep mode use the watch dog. But if you have an external interrupt pin you don't really need the watch dog. The aim is to save power, therefore there is no need to get awake by the watch dog and then go to sleep again. The trick is to clear the MCUSR register before …
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disable_watch_dog
void setup() {
MCUSR = 0;
wdt_disable();
}
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