Multitech

Creation procedure

Import steps

1. Payload Management → Sensor Definitions → Import Manufacturer: MClimate  Sensor Type: XX XX - the specific name of the sensor you are currently importing

2. Select both files:

   • mclimate-aqi-codec.js

   • mclimate-aqi-definition.json

3. Click Import, then Save & Apply – the gateway will create read-only Input objects for telemetry and writable Value objects for every "downlink": true property.

Take note the example file below ends with 2 lines, that are the "decoder", "encoder" variable names. These are an example and need to match the names you have given them when actually importing them in the Multitech Gateway.

In order for the BACnet integration to work, you would need to import both the code below for the Codec file (in the form of a JS file) and the code for the Definition file after it (in the form of a JSON file).

Multitech BACnet Codec file

// DataCake
function Decoder(bytes, port){
    var decoded = decodeUplink({ bytes: bytes, fPort: port }).data;
    return decoded;
}

// Milesight
function Decode(port, bytes){
    var decoded = decodeUplink({ bytes: bytes, fPort: port }).data;
    return decoded;
}

// The Things Industries / Main
function decodeUplink(input) {
    try {
        var bytes = input.bytes;
        var data = {};
        function calculateBatteryVoltage(byte) {
            return byte * 8 + 1600;
        }

        function calculateTemperature(rawData) {
            return rawData / 10.0;
        }

        function handleKeepalive(bytes, data) {
            // Byte 1: Device battery voltage
            var batteryVoltage = calculateBatteryVoltage(bytes[1]) / 1000;
            data.batteryVoltage = Number(batteryVoltage.toFixed(1));

            // Byte 2: Thermistor operational status and temperature data (bits 9:8)
            var thermistorConnected = (bytes[2] & 0x04) === 0; // Bit 2
            var temperatureHighBits = bytes[2] & 0x03; // Bits 1:0

            // Byte 3: Thermistor temperature data (bits 7:0)
            var temperatureLowBits = bytes[3];
            var temperatureRaw = (temperatureHighBits << 8) | temperatureLowBits;
            var temperatureCelsius = calculateTemperature(temperatureRaw);
            data.thermistorProperlyConnected = thermistorConnected;
            data.sensorTemperature = Number(temperatureCelsius.toFixed(1));

            // Byte 4: Button event data
            var buttonEventData = bytes[4];
            data.pressEvent = buttonEventData;

            return data;
        }

        function handleResponse(bytes, data){
            var commands = bytes.map(function(byte){
                return ("0" + byte.toString(16)).substr(-2); 
            });
            commands = commands.slice(0,-5);
            var command_len = 0;
        
            commands.map(function (command, i) {
                switch (command) {
                    case '04':
                        {
                            command_len = 2;
                            var hardwareVersion = commands[i + 1];
                            var softwareVersion = commands[i + 2];
                            data.deviceVersions = { hardware: Number(hardwareVersion), software: Number(softwareVersion) };
                        }
                    break;
                    case '12':
                        {
                            command_len = 1;
                            data.keepAliveTime = parseInt(commands[i + 1], 16);
                        }
                    break;
                    case '14':
                        {
                            command_len = 1;
                            data.childLock = toBool(parseInt(commands[i + 1], 16)) ;
                        }
                    break;
                    case '19':
                        {
                            command_len = 1;
                            var commandResponse = parseInt(commands[i + 1], 16);
                            var periodInMinutes = commandResponse * 5 / 60;
                            data.joinRetryPeriod =  periodInMinutes;
                        }
                    break;
                    case '1b':
                        {
                            command_len = 1;
                            data.uplinkType = parseInt(commands[i + 1], 16) ;
                        }
                    break;
                    case '1d':
                        {
                            command_len = 2;
                            var wdpC = commands[i + 1] == '00' ? false : parseInt(commands[i + 1], 16);
                            var wdpUc = commands[i + 2] == '00' ? false : parseInt(commands[i + 2], 16);
                            data.watchDogParams= { wdpC: wdpC, wdpUc: wdpUc } ;
                        }
                    break;
                    case '1f':
                        {
                            command_len = 1;
                            data.sendEventLater = parseInt(commands[i + 1], 16) ;
                        }
                    break;
                    case 'a4':
                        {
                            command_len = 1;
                            data.region = parseInt(commands[i + 1], 16);
                        }
                    break;
                    case 'b1':
                        {
                            command_len = 3;
                            data.singlePressEventCounter =(parseInt(commands[i + 1], 16) << 16) | (parseInt(commands[i + 2], 16) << 8) | parseInt(commands[i + 3], 16);
                        }
                    break;
                    case 'b2':
                        {
                            command_len = 3;
                            data.doublePressEventCounter =(parseInt(commands[i + 1], 16) << 16) | (parseInt(commands[i + 2], 16) << 8) | parseInt(commands[i + 3], 16);
                        }
                    break;
                    case 'b3':
                        {
                            command_len = 3;
                            data.triplePressEventCounter =(parseInt(commands[i + 1], 16) << 16) | (parseInt(commands[i + 2], 16) << 8) | parseInt(commands[i + 3], 16);
                        }
                    break;
                    default:
                        break;
                }
                commands.splice(i,command_len);
            });
            return data;
            }

        if (bytes[0] == 1) {
            data = handleKeepalive(bytes, data);
        } else {
            data = handleResponse(bytes, data);
            // Handle the remaining keepalive data if required after response
            bytes = bytes.slice(-5);
            data = handleKeepalive(bytes, data);
        }
        return { data: data };
    } catch (e) {
        // console.log(e);
        throw new Error('Unhandled data');
    }
}

Multitech BACnet Definition file

{
  "description": "MClimate MC Button (MC Button) – BACnet mapping",
  "properties": {

    "batteryVoltage"             : { "type": "float",  "units": "V"        },
    "thermistorProperlyConnected": { "type": "bool"                        },
    "sensorTemperature"          : { "type": "float",  "units": "celsius"  },
    "pressEvent"                 : { "type": "uint8"                       },

    "deviceVersions"             : { "type": "object"                      },
    "keepAliveTime"              : { "type": "uint8",  "units": "minutes"  },
    "childLock"                  : { "type": "bool"                        },
    "joinRetryPeriod"            : { "type": "float",  "units": "minutes"  },
    "uplinkType"                 : { "type": "uint8"                       },
    "watchDogParams"             : { "type": "object"                      },
    "sendEventLater"             : { "type": "uint8"                       },
    "region"                     : { "type": "uint8"                       },
    "singlePressEventCounter"    : { "type": "uint32"                      },
    "doublePressEventCounter"    : { "type": "uint32"                      },
    "triplePressEventCounter"    : { "type": "uint32"                      }
  },

  "decoder": "mclimate-mc-button-codec.js",
  "encoder": "mclimate-mc-button-codec.js"
}