Read DS18x20 Sensors With Raspberry Pi

This is a library for reading DS18x20 family temperature sensors with a Raspberry Pi and node.js.

Installation

Install using npm:

npm install ds1820-temp

Or download the source code and install dependencies with npm install.

Usage

The library exposes three methods; list devices, read all devices, and read single device.

All functions Return a Promise or you can supply callback that takes two arguments (error and result).

List devices

listDevices([cb(error, result)])

Result is an array of device IDs as strings.

Read All Devices

readDevices([cb(error, result)])

Result is an array of objects with two attributes: id (the device ID) and value (the temperature read).

Read Single Device

readDevice(deviceId, [cb(error, result])

Takes the device ID as an argument. The result is an object with two attributes: id (the device ID) and value (the temperature read).

Example

var sensors = require('1wire');

// promise based
sensors.readDevices().then(
  function (devices) {
    console.log('Read all devices', devices);
  },
  function (err) {
    console.log('An error occurred', err);
  }
);

// callback based
sensors.readDevices(function (err, devices) {
  if (err) {
    console.log('An error occurred', err);
    return;
  }

  console.log('Read all devices', devices);
});