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.

用法范例:

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
										

构造函数

class machine. ADC ( id )

Access the ADC associated with a source identified by id . This id may be an integer (usually specifying a channel number), a Pin object, or other value supported by the underlying machine.

方法

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.