The adc module provides the ADC class which supports analog-digital conversion. Use require('adc') to access this module.

Class: ADC

An instances of ADC represents a ADC object.

new ADC(pin)

• pin <number> The pin number which can support ADC function.

• Returns: <object> The return value is ADC object.

var ADC = require('adc').ADC;
var a = new ADC(26);

adc.read()

• Returns: <number> The return value is ADC object.

This method returns the analog value read from the pin. A RangeError will be thrown if adc.pin does not support ADC function.

var ADC = require('adc').ADC;
var a = new ADC(26);
var value = a.read(); // Read the ADC value at the pin 26.

adc.pin

• <number> The pin number which can support ADC function.

The pin number of the ADC object.

var ADC = require('adc').ADC;
var a = new ADC(26);
console.log(a.pin); // 26