2016-02-17 09:53:22 +08:00
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Title: Power management demo
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Description:
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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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2016-11-03 15:02:57 +08:00
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It will cycle through following states
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1. CPU Low Power State
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2. Deep Sleep - demonstrates invoking suspend/resume handlers of devices to
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2016-07-01 10:26:45 +08:00
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save device states and switching to deep sleep state.
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2016-11-14 15:51:58 +08:00
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3. No-op - no operation and letting kernel do its idle
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2016-02-17 09:53:22 +08:00
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2016-11-03 15:02:57 +08:00
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This application uses Intel Quark SE Microcontroller C1000 board for
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2016-11-14 15:51:58 +08:00
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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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2016-02-17 09:53:22 +08:00
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--------------------------------------------------------------------------------
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Building and Running Project:
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2016-11-03 15:02:57 +08:00
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make BOARD=<board>
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2016-02-17 09:53:22 +08:00
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--------------------------------------------------------------------------------
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Troubleshooting:
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Problems caused by out-dated project information can be addressed by
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issuing one of the following commands then rebuilding the project:
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make clean # discard results of previous builds
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# but keep existing configuration info
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or
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make pristine # discard results of previous builds
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# and restore pre-defined configuration info
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--------------------------------------------------------------------------------
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2016-11-14 15:51:58 +08:00
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***Sample output on x86 core***
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2016-02-17 09:53:22 +08:00
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2016-11-14 15:51:58 +08:00
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Power Management Demo on x86
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2016-07-01 10:26:45 +08:00
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2016-11-14 15:51:58 +08:00
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Application main thread
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2016-02-17 09:53:22 +08:00
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2016-11-03 15:02:57 +08:00
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Low power state entry!
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2016-02-17 09:53:22 +08:00
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2016-11-03 15:02:57 +08:00
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Low power state exit!
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2016-11-14 15:51:58 +08:00
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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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2016-07-01 10:26:45 +08:00
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2016-11-03 15:02:57 +08:00
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Deep sleep entry!
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2016-07-01 10:26:45 +08:00
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Wake from Deep Sleep!
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2016-11-03 15:02:57 +08:00
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Deep sleep exit!
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2016-11-14 15:51:58 +08:00
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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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***Sample output on ARC core***
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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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2016-02-17 09:53:22 +08:00
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2016-03-19 07:43:40 +08:00
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...
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