@1st-setup/cul/lib/esa.js

Module to interact with Busware CUL / culfw

'use strict';
// ESA protocol implementation for ESA energy counter  @Michael Lorenz 4.3.2018 V0.3

module.exports.parse = function (raw) {
    const message = {};
    // --- setup the device ---------------------
    message.protocol = 'ESA';
    message.device = 'ESAunknown'; // Devicetyp
    message.address = raw.slice(3, 7); // Device

    // --- setup the state data
    message.data = {};
    message.data.seq = raw.slice(1, 3); // Sequenz, message counter
    message.data.dev = raw.slice(3, 7); // Device
    message.data.code = raw.slice(7, 11); // Code tells us which Device we have

    // --- setup the Device like Code -----------
    if (message.data.code === '011E') {
        message.device = 'ESA2000';
        message.data.devtyp = 'ESA2000';
    }

    if (message.data.code === '031E') {
        message.device = 'ESA1000';
        message.data.devtyp = 'ESA1000';
    }

    // --- setup the values --------------------
    message.data.tictotal = Number.parseInt(raw.slice(11, 19), 16);
    message.data.ticact = Number.parseInt(raw.slice(19, 23), 16);
    message.data.tictime = Number.parseInt(raw.slice(23, 29), 16);
    message.data.tickwh = Number.parseInt(raw.slice(29, 33), 16);

    // --- show the implemented esa protocol version for debugging
    // message.data.ProtVer = 'V0.3.1';

    return message;
};

// --------------- export function ----------------------------------------------
module.exports.cmd = function (code, address, command) {
    return 'S' + code + address + command;
};