knx/src/dptlib/dpt238.js

KNXnet/IP protocol implementation for Node(>=6.x)

/**
 * knx.js - a KNX protocol stack in pure Javascript
 * (C) 2016-2018 Elias Karakoulakis
 */

const log = require('log-driver').logger;

//
// DPT238: 1-byte unsigned value
//
// DPT5 is the only (AFAIK) DPT with scalar datatypes (5.001 and 5.003)
exports.formatAPDU = (value) => {
  const apdu_data = Buffer.from([value]);
  log.trace(
    'dpt238.js : input value = ' + value + '   apdu_data = ' + apdu_data
  );
  return apdu_data;
};

exports.fromBuffer = (buf) => buf[0];

exports.basetype = {
  bitlength: 8,
  range: [,],
  valuetype: 'basic',
  desc: '1-byte',
};

exports.subtypes = {
  // 20.102 HVAC mode
  102: {
    name: 'HVAC_Mode',
    desc: '',
    unit: '',
    scalar_range: [,],
    range: [,],
  },

  // 5.003 angle (degrees 0=0, ff=360)
  '003': {
    name: 'DPT_Angle',
    desc: 'angle degrees',
    unit: '°',
    scalar_range: [0, 360],
  },

  // 5.004 percentage (0..255%)
  '004': {
    name: 'DPT_Percent_U8',
    desc: 'percent',
    unit: '%',
  },

  // 5.005 ratio (0..255)
  '005': {
    name: 'DPT_DecimalFactor',
    desc: 'ratio',
    unit: 'ratio',
  },

  // 5.006 tariff (0..255)
  '006': {
    name: 'DPT_Tariff',
    desc: 'tariff',
    unit: 'tariff',
  },

  // 5.010 counter pulses (0..255)
  '010': {
    name: 'DPT_Value_1_Ucount',
    desc: 'counter pulses',
    unit: 'pulses',
  },
};