docs/esp32/quickref: Add DAC example.
Signed-off-by: IhorNehrutsa <Ihor.Nehrutsa@gmail.com>
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@ -330,6 +330,19 @@ possible at the same frequency.
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See more examples in the :ref:`esp32_pwm` tutorial.
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DAC (digital to analog conversion)
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----------------------------------
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On the ESP32, DAC functionality is available on pins 25, 26.
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On the ESP32S2, DAC functionality is available on pins 17, 18.
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Use the DAC::
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from machine import DAC, Pin
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dac = DAC(Pin(25)) # create an DAC object acting on a pin
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dac.write(128) # set a raw analog value in the range 0-255, 50% now
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ADC (analog to digital conversion)
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----------------------------------
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