107 lines
1.9 KiB
ReStructuredText
107 lines
1.9 KiB
ReStructuredText
Power management demo
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#####################
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Overview
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********
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A sample implementation of a power manager app that uses the Zephyr
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power management infrastructure.
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This app will cycle through the various power schemes at every call
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to _sys_soc_suspend() hook function.
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It will cycle through the following states:
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1. CPU Low Power State
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2. Deep Sleep - demonstrates invoking suspend/resume handlers of
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devices to save device states and switching to deep sleep state.
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3. No-op - no operation and letting kernel do its idle
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Requirements
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************
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This application uses Intel Quark SE Microcontroller C1000 board for
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the demo. It demonstrates power operations on the x86 and ARC cores in
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the board.
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.. note::
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PM support on Intel Quark SE Microcontroller C1000 board requires
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the latest version of the `boot loader
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<https://github.com/quark-mcu/qm-bootloader/releases>`_.
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Building and Running
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********************
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.. code-block:: console
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make BOARD=<board>
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Sample Output
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=============
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x86 core output
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---------------
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.. code-block:: console
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Power Management Demo on x86
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Application main thread
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Low power state entry!
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Low power state exit!
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Total Elapsed From Suspend To Resume = 131073 RTC Cycles
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Wake up event handler
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Application main thread
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Deep sleep entry!
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Wake from Deep Sleep!
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Deep sleep exit!
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Total Elapsed From Suspend To Resume = 291542 RTC Cycles
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Wake up event handler
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Application main thread
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No PM operations done
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Application main thread
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Low power state entry!
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Low power state exit!
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...
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ARC core output
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---------------
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.. code-block:: console
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Power Management Demo on arc
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Application main thread
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Low power state entry!
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Low power state exit!
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Total Elapsed From Suspend To Resume = 131073 RTC Cycles
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Wake up event handler
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Application main thread
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No PM operations done
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Application main thread
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Low power state entry!
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Low power state exit!
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...
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