7. ADC Example

1. Overview

The K230 integrates an internal ADC hardware module, providing 6 channels. It has a sampling resolution of 12 bits (range 0-4095) and a sampling rate of up to 1 MHz.

2. Example

The following example demonstrates how to use the ADC interface to read sampling values and voltage.

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
print(adc.read_uv(), "uV")

3. Code Explanation

1. Instantiate ADC:

   • Create an ADC object and specify the channel number (0 in this example) to access the ADC functionality of that channel.

2. Read Sampling Value:

   • Call the read_u16() method to get the current sampling value of ADC channel 0. The returned value ranges from 0 to 4095, representing the intensity of the analog signal.

3. Read Voltage Value:

   • Call the read_uv() method to get the voltage value of channel 0. The returned value is in microvolts (uV), providing a more intuitive voltage representation.

Tip

For detailed interfaces and usage of the ADC module, please refer to the API documentation