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Timed interrupt

Hello everyone,

I am unexperienced in coding that is why I am asking for your help and oppinions on creating timed interrupt. I am using nrf51822, s110. My goal is to send microcontroler to sleep while disabling all peripherals and saving energy. After 5 minutes of sleep waking up the chip, enabling peripherals, collecting data from sensors, sending device to sleep. So, my question is how could I perform this timed interrupt with the smallest energy consumption? Could I use Timer for this task? Could you provide info how to set up this interrupt for a nrf microcontroler?

Thank you in advance.

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