2021-03-17 16:18:26 +08:00
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.. _stm32-pm-blinky-sample:
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2021-06-01 22:47:08 +08:00
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STM32 PM Blinky
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###############
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2021-03-17 16:18:26 +08:00
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Overview
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********
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2021-06-01 22:47:08 +08:00
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This sample is a minimum application to demonstrate basic power management
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behavior in a basic blinking LED set up using the :ref:`GPIO API <gpio_api>` in
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low power context.
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2021-03-17 16:18:26 +08:00
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.. _stm32-pm-blinky-sample-requirements:
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Requirements
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************
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2021-06-01 22:47:08 +08:00
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The board should support enabling PM. For a STM32 based target, it means that
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it should support a clock source alternative to Cortex Systick that can be used
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2022-02-03 03:07:56 +08:00
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in core sleep states, as LPTIM (:dtcompatible:`st,stm32-lptim`).
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2021-03-17 16:18:26 +08:00
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Building and Running
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********************
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2021-06-01 22:47:08 +08:00
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Build and flash Blinky as follows, changing ``stm32l562e_dk`` for your board:
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2021-03-17 16:18:26 +08:00
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.. zephyr-app-commands::
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:zephyr-app: samples/basic/blinky
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2021-06-01 22:47:08 +08:00
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:board: stm32l562e_dk
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2021-03-17 16:18:26 +08:00
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:goals: build flash
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:compact:
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2021-06-01 22:47:08 +08:00
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After flashing, the LED starts to blink.
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PM configurations
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*****************
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2022-02-08 00:27:43 +08:00
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By default, :kconfig:option:`CONFIG_PM_DEVICE` and :kconfig:option:`CONFIG_PM_DEVICE_RUNTIME` are
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2021-06-01 22:47:08 +08:00
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enabled, but user can also deactivate one or the other to see each configuration
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in play.
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