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Add documentation on recovering from deep sleep with WAKE_RF_DISABLED (#7338)

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* Clarify how to enable WiFi after DeepSleep

* Add FAQ item for recovering from DeepSleep

* Reference issue

* Update issue URL
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Amadeus
2020-05-29 19:14:45 +01:00
committed by GitHub
parent 0d43338a37
commit 27ef03fc05
2 changed files with 16 additions and 4 deletions
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doc/libraries.rst
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@ -41,7 +41,7 @@ SPI
SPI library supports the entire Arduino SPI API including transactions, including setting phase (CPHA). Setting the Clock polarity (CPOL) is not supported, yet (SPI\_MODE2 and SPI\_MODE3 not working).
The usual SPI pins are:
The usual SPI pins are:
- ``MOSI`` = GPIO13
- ``MISO`` = GPIO12
@ -73,7 +73,7 @@ ESP-specific APIs
Some ESP-specific APIs related to deep sleep, RTC and flash memories are available in the ``ESP`` object.
``ESP.deepSleep(microseconds, mode)`` will put the chip into deep sleep. ``mode`` is one of ``WAKE_RF_DEFAULT``, ``WAKE_RFCAL``, ``WAKE_NO_RFCAL``, ``WAKE_RF_DISABLED``. (GPIO16 needs to be tied to RST to wake from deepSleep.) The chip can sleep for at most ``ESP.deepSleepMax()`` microseconds.
``ESP.deepSleep(microseconds, mode)`` will put the chip into deep sleep. ``mode`` is one of ``WAKE_RF_DEFAULT``, ``WAKE_RFCAL``, ``WAKE_NO_RFCAL``, ``WAKE_RF_DISABLED``. (GPIO16 needs to be tied to RST to wake from deepSleep.) The chip can sleep for at most ``ESP.deepSleepMax()`` microseconds. If you implement deep sleep with ``WAKE_RF_DISABLED`` and require WiFi functionality on wake up, you will need to implement an additional ``WAKE_RF_DEFAULT`` before WiFi functionality is available.
``ESP.deepSleepInstant(microseconds, mode)`` works similarly to ``ESP.deepSleep`` but sleeps instantly without waiting for WiFi to shutdown.