sma-energy/MulticastServer.js at main · enbock/sma-energy · GitHub

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const dgram = require('dgram');
const WebSocket = require('ws');

const MULTICAST_ADDRESS1 = '239.12.255.254';
const PORT = 9522;
const socket = dgram.createSocket({ type: 'udp4', reuseAddr: true });

const WEB_SOCKET_PORT=3000;

const wss = new WebSocket.Server({ port: WEB_SOCKET_PORT });

const devices = [
    /**
HEX   : 53 4d 41 00 00 04 02 a0  00 00 00 01 02 4c 00 10  60 69 01 74 b3 f5 06 fd  5a be e8 59[00 01 04 00]  ASCII : SMA....  .....L.. `i.t³õ.ý Z¾èY....
HEX   : 00 00 00 00 00 01 08 00  00 00 00 03 4a 3b 0b a8  00 02 04 00 00 00 17 cd  00 02 08 00 00 00 00 00   ASCII : ........ ....J;.¨ .......Í ........
HEX   : 08 ed 1f 90 00 03 04 00  00 00 00 00 00 03 08 00  00 00 00 00 00 38 fb 08  00 04 04 00 00 00 0d 1b   ASCII : .í..... ........ .....8û. ........
HEX   : 00 04 08 00 00 00 00 00  72 36 6a 38 00 09 04 00  00 00 00 00 00 09 08 00  00 00 00 03 68 f1 7a 28   ASCII : ........ r6j8.... ........ ....hñz(
HEX   : 00 0a 04 00 00 00 1b 2c  00 0a 08 00 00 00 00 00  09 dd 01 18[00 0d 04 00] 00 00 03 6c 00 0e 04 00   ASCII : ......., ........ .Ý...... ...l....
HEX   : 00 00 c3 57[00 15 04 00] 00 00 3b e5 00 15 08 00  00 00 00 01 0f 45 c7 10 [00 16 04 00]00 00 00 00   ASCII : ..ÃW.... ..;å.... .....EÇ. ........
HEX   : 00 16 08 00 00 00 00 00  05 55 31 b0 00 17 04 00  00 00 00 00 00 17 08 00  00 00 00 00 02 b8 b5 80   ASCII : ........ .U1°.... ........ .....¸µ
HEX   : 00 18 04 00 00 00 04 4b  00 18 08 00 00 00 00 00  2a 74 6c 40 00 1d 04 00  00 00 3c 0c 00 1d 08 00   ASCII : .......K ........ *tl@.... ..<.....
HEX   : 00 00 00 01 1f d0 87 78 [00 1e 04 00]00 00 00 00  00 1e 08 00 00 00 00 00  05 80 04 d0 00 1f 04 00   ASCII : .....Ðx ........ ........ ..Ð....
HEX   : 00 00 1a a1 00 20 04 00  00 03 89 b2 00 21 04 00  00 00 03 e5 00 29 04 00  00 00 00 00 00 29 08 00   ASCII : ...¡. .. ..².!.. ...å.).. .....)..
HEX   : 00 00 00 01 91 2e ad a0  00 2a 04 00 00 00 2a c1  00 2a 08 00 00 00 00 00  04 49 7c 18 00 2b 04 00   ASCII : .....  .*....*Á .*...... .I|..+..
HEX   : 00 00 00 00 00 2b 08 00  00 00 00 00 02 36 9b e0  00 2c 04 00 00 00 03 f5  00 2c 08 00 00 00 00 00   ASCII : .....+.. .....6à .,.....õ .,......
HEX   : 23 60 04 f0 00 31 04 00  00 00 00 00 00 31 08 00  00 00 00 01 9b ff e2 f8  00 32 04 00 00 00 2a f0   ASCII : #`.ð.1.. .....1.. ....ÿâø .2....*ð
HEX   : 00 32 08 00 00 00 00 00  04 57 3a 88 00 33 04 00  00 00 12 9d 00 34 04 00  00 03 91 5d 00 35 04 00   ASCII : .2...... .W:.3.. ....4.. ..].5..
HEX   : 00 00 03 e4 00 3d 04 00  00 00 00 00 00 3d 08 00  00 00 00 00 b0 45 cf 58  00 3e 04 00 00 00 28 f1   ASCII : ...ä.=.. .....=.. ....°EÏX .>....(ñ
HEX   : 00 3e 08 00 00 00 00 00  05 cd ab 90 00 3f 04 00  00 00 00 00 00 3f 08 00  00 00 00 00 01 08 ad 58   ASCII : .>...... .Í«.?.. .....?.. ......X
HEX   : 00 40 04 00 00 00 04 db  00 40 08 00 00 00 00 00  2a 20 fb 50 00 45 04 00  00 00 00 00 00 45 08 00   ASCII : .@.....Û .@...... * ûP.E.. .....E..
HEX   : 00 00 00 00 cb 2d e0 08  00 46 04 00 00 00 29 3a  00 46 08 00 00 00 00 00  05 e1 27 88 00 47 04 00   ASCII : ....Ë-à. .F....): .F...... .á'.G..
HEX   : 00 00 12 30 00 48 04 00  00 03 95 9a 00 49 04 00  00 00 03 e1 90 00 00 00  02 0f 07 52 00 00 00 00   ASCII : ...0.H.. ...I.. ...á... ...R....
     */
    {address: process.env.SHM_HOST, name:"SMA Home Manager 2.0", size: 608, parser: parseManager},
]
function parseValue(msg, offset, scale = 1) {
    try {
    return msg.readUInt32BE(offset) * scale;
    } catch (e) {
        console.log("Wrong data detected");
        return 0;
    }
}

socket.on('message', onMessage);
function onMessage (msg, rinfo) {
    const foundDevice = devices.find(d => d.address === rinfo.address && d.size === msg.length);

    if(!foundDevice) {
        // console.log("Unknown Message", rinfo);
        // displayHexAndStringMessage(msg);
        return;
    }

    if(!foundDevice.parser) {
        // console.log("Missing parser for", foundDevice.name, rinfo);
        // displayHexAndStringMessage(msg);
        return;
    }

    const data = foundDevice.parser(msg);

    wss.clients.forEach(client => {
        if (client.readyState === WebSocket.OPEN) {
            client.send(JSON.stringify(data));
        }
    });
}

function parseManager(msg) {
    return {
        dataType: 'homeManager',
        grid_consumption: parseValue(msg,32, 0.1),
        grid_feed_in: parseValue(msg,52, 0.1),
        reactive_power_inductive: parseValue(msg,72, 0.1),
        reactive_power_capacitive: parseValue(msg,92, 0.1),
        apparent_power_import: parseValue(msg,112, 0.1),
        apparent_power_export: parseValue(msg,132, 0.1),
        power_factor: parseValue(msg,152, 0.001),
        grid_frequency: parseValue(msg,160, 0.001),
        phase1_consumption: parseValue(msg,168, 0.1),
        phase1_feed_in: parseValue(msg,188, 0.1),
        phase1_reactive_power_inductive: parseValue(msg,208, 0.1),
        phase1_reactive_power_capacitive: parseValue(msg,228, 0.1),
        phase1_voltage: parseValue(msg,296, 0.001),
        phase1_current: parseValue(msg,288, 0.001),
        phase1_power_factor: parseValue(msg,304, 0.001),
        phase2_consumption: parseValue(msg,312, 0.1),
        phase2_feed_in: parseValue(msg,332, 0.1),
        phase2_reactive_power_inductive: parseValue(msg,352, 0.1),
        phase2_reactive_power_capacitive: parseValue(msg,372, 0.1),
        phase2_voltage: parseValue(msg,440, 0.001),
        phase2_current: parseValue(msg,432, 0.001),
        phase2_power_factor: parseValue(msg,448, 0.001),
        phase3_consumption: parseValue(msg,456, 0.1),
        phase3_feed_in: parseValue(msg,476, 0.1),
        phase3_reactive_power_inductive: parseValue(msg,496, 0.1),
        phase3_reactive_power_capacitive: parseValue(msg,516, 0.1),
        phase3_voltage: parseValue(msg,584, 0.001),
        phase3_current: parseValue(msg,576, 0.001),
        phase3_power_factor: parseValue(msg,592, 0.001)
    }
}

function displayHexAndStringMessage(msg) {
    // Wandelt die Nachricht in einen Buffer um, wenn sie nicht bereits einer ist
    const buffer = Buffer.isBuffer(msg) ? msg : Buffer.from(msg);


  const lineLength = 32; // Anzahl der Bytes pro Zeile

  for (let i = 0; i < buffer.length; i += lineLength) {
    let hexString = '';
    let asciiString = '';
    let j, c=0;

    // Schleife über einen Satz von `lineLength` Bytes
    for (j = i; j < i + lineLength && j < buffer.length; j++) {
      const byte = buffer[j];
      hexString += byte.toString(16).padStart(2, '0') + ' ';
      asciiString += byte > 31 && byte < 256 ? String.fromCharCode(byte) : '.';

      if((j+1) % 8 === 0) {
        hexString += ' ';
        asciiString += ' ';
        c++;
      }
    }

    console.log('HEX   :', hexString, ''.padEnd(100-hexString.length, ' '), 'ASCII :', asciiString);
  }
  console.log("\n");
}

socket.on('listening', () => {
    const address = socket.address();
    console.log(`Listening on ${address.address}:${address.port}`);
    socket.setMulticastTTL(128);
    socket.addMembership(MULTICAST_ADDRESS1);
});

socket.bind(PORT, () => {
    console.log(`UDP-Socket an Port ${PORT} gebunden.`);
});