node-red-contrib-knx-ultimate/KNXEngine/dptlib/dpt237.js

Control your KNX intallation via Node-Red! Single Node KNX IN/OUT with optional ETS group address importer. Easy to use and highly configurable.

/**
* knxultimate-api
* (C) 2016-2019 Supergiovane
*/

const knxLog = require('./../KnxLog');

function hex2bin(hex) {
    return (parseInt(hex, 16).toString(2)).padStart(8, '0');
}
function dec2bin(dec) {
    return (dec >>> 0).toString(2);
}

//
// DPT237: DPT_DALI_Control_Gear_Diagnostic
//
exports.formatAPDU = function (value) {
    if (!value) {
        knxLog.get().error("DPT237: cannot write null value");
    } else {
        var apdu_data;
        if (typeof value == 'object' &&
            value.hasOwnProperty('convertorError') && value.hasOwnProperty('ballastFailure') && value.hasOwnProperty('lampFailure') &&
            value.hasOwnProperty('readResponse') &&
            value.hasOwnProperty('addressIndicator') &&
            value.hasOwnProperty('daliAddress') && value.daliAddress >= 0 && value.daliAddress <= 64) {
        } else {
            knxLog.get().error("DPT237: Must supply an valid payload. See the WIKI.");
        }

        // LSB
       let LSB = (value.readResponse === false ? "0" : "1") + (value.addressIndicator === false ? "0" : "1") + dec2bin(value.daliAddress).padStart(6, "0");

        // MSB
        let MSB = "00000" + (value.convertorError === false ? "0" : "1") + (value.ballastFailure === false ? "0" : "1") + (value.lampFailure === false ? "0" : "1");
     
        var bufferTotal = Buffer.alloc(2)
        bufferTotal[0] = parseInt(MSB, 2);
        bufferTotal[1] = parseInt(LSB, 2);
        return bufferTotal;

    }
}

exports.fromBuffer = function (buf) {
    if (buf.length != 2) {
        knxLog.get().error("DPT237: Buffer should be 2 byte long, got", buf.length);
        return null;
    }

    let bufTotale = buf.toString('hex');
    //console.log(bufTotale)
    let MSB = hex2bin(bufTotale.substring(0, 2)); // Get Binary
    let LSB = hex2bin(bufTotale.substring(2, 4));// Get Binary

    // LSB
    let readResponse = LSB.substring(0, 1) === "0" ? false : true;
    let addressIndicator = LSB.substring(1, 2) === "0" ? false : true;
    let daliAddress = parseInt("00" + LSB.substring(2, 8), 2);

    // MSB
    let lampFailure = MSB.substring(7, 8) === "0" ? false : true;
    let ballastFailure = MSB.substring(6, 7) === "0" ? false : true;
    let convertorError = MSB.substring(5, 6) === "0" ? false : true;

    ret = { readResponse: readResponse, addressIndicator: addressIndicator, daliAddress: daliAddress, lampFailure: lampFailure, ballastFailure: ballastFailure, convertorError: convertorError };
    return ret;
}


exports.basetype = {
    "bitlength": 2 * 8,
    "valuetype": "basic",
    "desc": "PDT_GENERIC_02",
    "help":
        `// DALI control gear diagnostic. Properties explanation:
// readResponse: true/false (FALSE means Response or spontaneus sending, TRUE means Read)
// addressIndicator: true/false (Indicates the type of DALI address. FALSE means Device Address, FALSE means Group Address)
// daliAddress: the DALI address
// lampFailure: true/false, ballastFailure: true/false , convertorError: true/false 
msg.payload={readResponse:false, addressIndicator:false, daliAddress:8, lampFailure:false, ballastFailure:false, convertorError:false};
return msg;`
}

exports.subtypes = {
    "600": {
        "desc": "DPT_DALI_Control_Gear_Diagnostic", "name": "DALI control gear diagnostic",
        "unit": "", "scalar_range": [,],
        "range": [,]
    }
}