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OK, I will reply myself. It's because datasheet says for Atmega328p: "When the asynchronous operation is selected, the 32.768kHz Oscillator for Timer/Counter2 is always running,
except in Power-down and Standby modes."
When I do use: " set_sleep_mode(SLEEP_MODE_PWR_SAVE);" it's working fine!
Hi,
I am trying to build low powered application. The concept is that 32.768kHz crystal is waking up Atmega328p every 8 seconds. I tried to follow several tutorials from Internet but unfortunately my microcontroller cannot wake up from SLEEP_MODE_PWR_DOWN or SLEEP_MODE_STANDBY modes. Wiring is...
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