2.4 ADC Module API Manual

1. Overview

The K230 processor integrates an internal ADC (Analog-to-Digital Converter) hardware module, providing 6 independent channels. The module has a sampling resolution of 12 bits, meaning the output range is 0-4095, with a sampling rate of 1 MHz.

2. API Introduction

The ADC class belongs to the machine module.

2.1 Example

from machine import ADC

# Instantiate ADC channel 0
adc = ADC(0)

# Get the sampling value of ADC channel 0
print(adc.read_u16())

# Get the voltage value of ADC channel 0 (in microvolts)
print(adc.read_uv(), "uV")

2.2 Constructor

adc = ADC(channel)

Parameters

• channel: Indicates the ADC channel number to use, ranging from [0, 5].

2.3 read_u16

ADC.read_u16()

Function

Gets the current sampling value of the specified channel.

Parameters

None

Return Value

Returns the sampling value of the ADC channel, ranging from [0, 4095].

2.4 read_uv

ADC.read_uv()

Function

Gets the current voltage value (in microvolts) of the specified channel.

Parameters

None

Return Value

Returns the voltage value of the ADC channel, in microvolts (uV), ranging from [0, 1800000] microvolts.