Pycom FiPy, Руководство пользователя, Страница: 255 / 496

adc.vref(vref)
If called without any arguments, this function returns the current calibrated voltage (in
millivolts) of the
1.1v
reference. Otherwise it will update the calibrated value (in millivolts)
of the internal
1.1v
reference.
adc.vref_to_pin(pin)
Connects the internal
1.1v
to external
GPIO
. It can only be connected to
P22
,
P21
or
P6
. It is recommended to only use
P6
on the WiPy, on other modules this pin is
connected to the radio.
Constants
ADC.ATTN_0DB ADC.ATTN_2_5DB ADC.ATTN_6DB ADC.ATTN_11DB
ADC channel attenuation values
class ADCChannel
Read analog values from internal/external sources. ADC channels can be connected to
internal points of the
MCU
or to
GPIO
pins. ADC channels are created using the
ADC.channel
method.
Methods
adcchannel()
Fast method to read the channel value.
adcchannel.value()
Read the channel value.
adcchannel.init()
(Re)init and enable the ADC channel. This method is automatically called on object creation.
adcchannel.deinit()
Disable the ADC channel.
adcchannel.voltage()
Reads the channels value and converts it into a voltage (in millivolts)
5.2.1.1 ADC
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