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esp_timer: Timers with skip_unhandled_events option won't wake up system from light sleep

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KonstantinKondrashov
2021-04-19 20:48:16 +08:00
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parent cdad1eaa9c
commit f9ad16bb66
7 changed files with 72 additions and 1 deletions
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2
docs/en/api-reference/system/esp_timer.rst
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@@ -82,6 +82,8 @@ you can use the `skip_unhandled_events` option during :cpp:func:`esp_timer_creat
When the `skip_unhandled_events` is true, if a periodic timer expires one or more times during light sleep
then only one callback is called on wake.
Using the `skip_unhandled_events` option with `automatic light sleep` (see :doc:`Power Management APIs <power_management>`) helps to reduce the consumption of the system when it is in light sleep. The duration of light sleep is also determined by esp_timers. Timers with `skip_unhandled_events` option will not wake up the system.
Handling callbacks
------------------

2
docs/en/api-reference/system/power_management.rst
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@@ -87,6 +87,8 @@ If none of the locks are acquired, and light sleep is enabled in a call to :cpp:
Light sleep duration will be chosen to wake up the chip before the nearest event (task being unblocked, or timer elapses).
To skip unnecessary wake-up you can consider initializing an esp_timer with the `skip_unhandled_events` option as true. Timers with this flag will not wake up the system and it helps to reduce consumption.
Dynamic Frequency Scaling and Peripheral Drivers
------------------------------------------------