36 lines
1018 B
ReStructuredText
36 lines
1018 B
ReStructuredText
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.. currentmodule:: machine
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.. _machine.ADC:
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class ADC -- analog to digital conversion
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=========================================
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The ADC class provides an interface to analog-to-digital convertors, and
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represents a single endpoint that can sample a continuous voltage and
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convert it to a discretised value.
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Example usage::
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import machine
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adc = machine.ADC(pin) # create an ADC object acting on a pin
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val = adc.read_u16() # read a raw analog value in the range 0-65535
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Constructors
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------------
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.. class:: ADC(id)
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Access the ADC associated with a source identified by *id*. This
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*id* may be an integer (usually specifying a channel number), a
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:ref:`Pin <machine.Pin>` object, or other value supported by the
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underlying machine.
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Methods
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-------
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.. method:: ADC.read_u16()
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Take an analog reading and return an integer in the range 0-65535.
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The return value represents the raw reading taken by the ADC, scaled
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such that the minimum value is 0 and the maximum value is 65535.
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