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Use this tag for questions concerning low power sleep states, eg. a battery powered circuit waiting for an external event to happen.

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STM32 Sleep Mode: Interrupt gets executed but the CPU stays in WFI

I'm trying to implement a sleep mode in a microcontroller to save power but I don't quite understand why it behaves the way it does. … I started with a simple program that puts the CPU into sleep mode at the beginning of the execution. …