1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
.. currentmodule:: machine
.. _machine.ADC:
class ADC -- analog to digital conversion
=========================================
The ADC class provides an interface to analog-to-digital convertors, and
represents a single endpoint that can sample a continuous voltage and
convert it to a discretised value.
Example usage::
import machine
adc = machine.ADC(pin) # create an ADC object acting on a pin
val = adc.read_u16() # read a raw analog value in the range 0-65535
Constructors
------------
.. class:: ADC(id)
Access the ADC associated with a source identified by *id*. This
*id* may be an integer (usually specifying a channel number), a
:ref:`Pin <machine.Pin>` object, or other value supported by the
underlying machine.
Methods
-------
.. method:: ADC.read_u16()
Take an analog reading and return an integer in the range 0-65535.
The return value represents the raw reading taken by the ADC, scaled
such that the minimum value is 0 and the maximum value is 65535.
|
