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Document safe mode wait in README #9929

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Jan 3, 2025
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Document safe mode wait in README #9929

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3 changes: 3 additions & 0 deletions README.rst
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Expand Up @@ -136,6 +136,9 @@ Behavior
- Adds a safe mode that does not run user code after a hard crash or brown out. This makes it
possible to fix code that causes nasty crashes by making it available through mass storage after
the crash. A reset (the button) is needed after it's fixed to get back into normal mode.
- A 1 second delay is added to the boot process during which time the status LED will flash, and
resetting the device or pressing the boot button will force the device into safe mode. This delay
can be removed by a compile time option (``CIRCUITPY_SKIP_SAFE_MODE_WAIT``).
- Safe mode may be handled programmatically by providing a ``safemode.py``.
``safemode.py`` is run if the board has reset due to entering safe mode, unless the safe mode
initiated by the user by pressing button(s).
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