2020-07-21 05:15:19 -04:00
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menu "Power Management"
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config PM_ENABLE
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bool "Support for power management"
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default n
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help
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If enabled, application is compiled with support for power management.
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This option has run-time overhead (increased interrupt latency,
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longer time to enter idle state), and it also reduces accuracy of
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RTOS ticks and timers used for timekeeping.
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Enable this option if application uses power management APIs.
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config PM_DFS_INIT_AUTO
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bool "Enable dynamic frequency scaling (DFS) at startup"
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depends on PM_ENABLE
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default n
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help
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If enabled, startup code configures dynamic frequency scaling.
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Max CPU frequency is set to DEFAULT_CPU_FREQ_MHZ setting,
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min frequency is set to XTAL frequency.
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If disabled, DFS will not be active until the application
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configures it using esp_pm_configure function.
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2020-07-22 03:23:39 -04:00
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2020-07-21 05:15:19 -04:00
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config PM_USE_RTC_TIMER_REF
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bool "Use RTC timer to prevent time drift (EXPERIMENTAL)"
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2020-10-20 02:09:32 -04:00
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depends on (PM_ENABLE && ESP_TIMER_IMPL_FRC2 && ESP_TIME_FUNCS_USE_RTC_TIMER)
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2020-07-21 05:15:19 -04:00
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default n
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help
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When APB clock frequency changes, high-resolution timer (esp_timer)
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scale and base value need to be adjusted. Each adjustment may cause
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small error, and over time such small errors may cause time drift.
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If this option is enabled, RTC timer will be used as a reference to
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compensate for the drift.
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It is recommended that this option is only used if 32k XTAL is selected
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as RTC clock source.
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config PM_PROFILING
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bool "Enable profiling counters for PM locks"
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depends on PM_ENABLE
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default n
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help
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If enabled, esp_pm_* functions will keep track of the amount of time
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each of the power management locks has been held, and esp_pm_dump_locks
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function will print this information.
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This feature can be used to analyze which locks are preventing the chip
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from going into a lower power state, and see what time the chip spends
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in each power saving mode. This feature does incur some run-time
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overhead, so should typically be disabled in production builds.
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config PM_TRACE
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bool "Enable debug tracing of PM using GPIOs"
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depends on PM_ENABLE
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default n
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help
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If enabled, some GPIOs will be used to signal events such as RTOS ticks,
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frequency switching, entry/exit from idle state. Refer to pm_trace.c
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file for the list of GPIOs.
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This feature is intended to be used when analyzing/debugging behavior
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of power management implementation, and should be kept disabled in
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applications.
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endmenu # "Power Management"
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