BROWAN - Motion Sensor

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/* eslint-disable camelcase */ /* This is an example code for Everynet Parser. ** Everynet send several parameters to TagoIO. The job of this parse is to convert all these parameters into a TagoIO format. ** One of these parameters is the payload of your device. We find it too and apply the appropriate sensor parse. ** ** IMPORTANT: In most case, you will only need to edit the parsePayload function. ** ** Testing: ** You can do manual tests to this parse by using the Device Emulator. Copy and Paste the following code: ** [{ "variable": "everynet_payload", "value": "{ \"params\": { \"payload\": \"0109611395\" } }" }] ** ** The ignore_vars variable in this code should be used to ignore variables ** from the device that you don't want. */ // Add ignorable variables in this array. const ignore_vars = []; /** * Convert an object to TagoIO object format. * Can be used in two ways: * toTagoFormat({ myvariable: myvalue , anothervariable: anothervalue... }) * toTagoFormat({ myvariable: { value: myvalue, unit: 'C', metadata: { color: 'green' }} , anothervariable: anothervalue... }) * * @param {Object} object_item Object containing key and value. * @param {String} serie Serie for the variables * @param {String} prefix Add a prefix to the variables name */ function toTagoFormat(object_item, serie, prefix = '') { const result = []; for (const key in object_item) { if (ignore_vars.includes(key)) continue; if (typeof object_item[key] === 'object') { result.push({ variable: object_item[key].variable || `${prefix}${key}`, value: object_item[key].value, serie: object_item[key].serie || serie, metadata: object_item[key].metadata, location: object_item[key].location, unit: object_item[key].unit, }); } else { result.push({ variable: `${prefix}${key}`, value: object_item[key], serie, }); } } return result; } // Function to convert decimal numbers to binary function dec2bin(dec) { const binary = (dec >>> 0).toString(2); return '00000000'.substr(binary.length) + binary; } // Decode an uplink message from an array of bytes to an object of fields function Decoder(bytes, port) { // Decode an uplink message from a buffer // (array) of bytes to an object of fields. const decoded = {}; if (bytes == null) { return null; } if (port === 102) { // parse status decoded.status = { value: parseInt(dec2bin(bytes[0]).substr(7, 1), 2), }; // parse battery voltage decoded.battery_voltage = { value: Number((25 + parseInt(dec2bin(bytes[1]).substr(0, 4), 2)) / 10).toFixed(1), unit: 'V', }; // parse battery capacity decoded.battery_capacity = { value: Number(100 * parseInt(dec2bin(bytes[1]).substr(4), 2) / 15).toFixed(1), unit: '%', }; // parse temperature decoded.temperature = { value: bytes.readUInt8(2) - 32, unit: '°C', }; decoded.time_elapsed = bytes.readUInt16LE(3); decoded.count = bytes.readUIntLE(5, 3); } else { return null; } return decoded; } let data = payload.find(x => x.variable === 'data' || x.variable === 'payload'); let port = payload.find(x => x.variable === 'port'); if (data && port) { port = Number(port.value); const serie = data.serie || new Date().getTime(); data = data.value; const vars_to_tago = Decoder(Buffer.from(data, 'hex'), port); payload = [...payload, ...toTagoFormat(vars_to_tago, serie)]; payload = payload.filter(x => !ignore_vars.includes(x.variable)); }