kopia lustrzana https://github.com/micropython/micropython
docs/rp2/quickref.rst: Document the use of channel numbers for ADC.
Signed-off-by: robert-hh <robert@hammelrath.com>pull/13509/head
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@ -187,6 +187,13 @@ Use the :ref:`machine.ADC <machine.ADC>` class::
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adc = ADC(Pin(26)) # create ADC object on ADC pin
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adc = ADC(Pin(26)) # create ADC object on ADC pin
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adc.read_u16() # read value, 0-65535 across voltage range 0.0v - 3.3v
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adc.read_u16() # read value, 0-65535 across voltage range 0.0v - 3.3v
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The argument of the constructor ADC specifies either a Pin by number, name of as
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Pin object, or a channel number in the range 0 - 3. If a pin is specified,
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the pin is initialized in high-Z mode. If a channel number is used, the pin
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is not initialized and configuring is left to the user code. After hard reset,
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RP2040 pins operate in current sink mode at about 60µA. If the pin is not
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otherwise configured, that may lead to wrong ADC readings.
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Software SPI bus
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Software SPI bus
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----------------
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----------------
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