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docs/library: Add notes about minimum operating speed on ESP32 for BLE and WLAN. #19612

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docs/library: Add notes about minimum operating speed on ESP32 for BLE and WLAN. #19612

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docs/library/bluetooth: Add a note about minimum operating speed.
agatti Aug 12, 2026
9be79bb
docs/library/network.WLAN: Add a note about minimum operating speed.
agatti Aug 12, 2026
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7 changes: 7 additions & 0 deletions docs/library/bluetooth.rst
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Expand Up @@ -39,6 +39,13 @@ Configuration

The radio must be made active before using any other methods on this class.

.. note:: On ESP32 the BLE interface will not operate correctly and will
probably lock up the board if the system clock frequency has been changed to
a value below 80MHz. Whilst this limitation may have been lifted from more
recent members of the ESP32 product line, for compatibility reasons across
hardware variants it is suggested to keep the system clock frequency above
80MHz if you use the BLE interface.

.. method:: BLE.config('param', /)
BLE.config(*, param=value, ...)

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9 changes: 8 additions & 1 deletion docs/library/network.WLAN.rst
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Expand Up @@ -30,7 +30,14 @@ Methods

Activate ("up") or deactivate ("down") network interface, if boolean
argument is passed. Otherwise, query current state if no argument is
provided. Most other methods require active interface.
provided. Most other methods require the interface being active.

.. note:: On ESP32 the WLAN interface will not operate correctly and will
probably lock up the board if the system clock frequency has been changed to
a value below 80MHz. Whilst this limitation may have been lifted from more
recent members of the ESP32 product line, for compatibility reasons across
hardware variants it is suggested to keep the system clock frequency above
80MHz if you use the WLAN interface.

.. method:: WLAN.connect(ssid=None, key=None, *, bssid=None)

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