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Diffstat (limited to 'docs/esp8266/quickref.rst')
| -rw-r--r-- | docs/esp8266/quickref.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/esp8266/quickref.rst b/docs/esp8266/quickref.rst index af2ef1ca1a..c4fa779c21 100644 --- a/docs/esp8266/quickref.rst +++ b/docs/esp8266/quickref.rst @@ -138,6 +138,10 @@ Also note that Pin(16) is a special pin (used for wakeup from deepsleep mode) and may be not available for use with higher-level classes like ``Neopixel``. +There's a higher-level abstraction :ref:`machine.Signal <machine.Signal>` +which can be used to invert a pin. Useful for illuminating active-low LEDs +using ``on()`` or ``value(1)``. + UART (serial bus) ----------------- |