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esp32: Skip validation of image on boot from deepsleep.

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sdkconfig.base: Add CONFIG_BOOTLOADER_SKIP_VALIDATE_IN_DEEP_SLEEP=y.
This reduces time to boot from deepsleep by at least 200ms and can
provide significant power savings for deepsleep-based battery
applications.

docs/library/esp32.rst: Add note cautioning not to enter deepsleep after
changing the boot partition, without first performing a hard reset.

Signed-off-by: Glenn Moloney <glenn.moloney@gmail.com>
This commit is contained in:
Glenn Moloney 2023-08-17 13:24:25 +10:00 committed by Damien George
parent 5e50593738
commit 0bafdaf5f0
2 changed files with 6 additions and 0 deletions
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5
docs/library/esp32.rst
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@ -114,6 +114,11 @@ methods to enable over-the-air (OTA) updates.
Sets the partition as the boot partition.
.. note:: Do not enter :func:`deepsleep<machine.deepsleep>` after changing
the OTA boot partition, without first performing a hard
:func:`reset<machine.reset>` or power cycle. This ensures the bootloader
will validate the new image before booting.
.. method:: Partition.get_next_update()
Gets the next update partition after this one, and returns a new Partition object.

1
ports/esp32/boards/sdkconfig.base
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@ -13,6 +13,7 @@ CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=y
# Bootloader config
CONFIG_BOOTLOADER_LOG_LEVEL_WARN=y
CONFIG_BOOTLOADER_SKIP_VALIDATE_IN_DEEP_SLEEP=y
# Change default log level to "ERROR" (instead of "INFO")
CONFIG_LOG_DEFAULT_LEVEL_INFO=n