MILESIGHT - Ws301

Codec Preview

/* eslint-disable no-plusplus */ /** * Payload Decoder for The Things Network * * Copyright 2021 Milesight IoT * * @product WS301 */ function Decoder(bytes) { const decoded = {}; for (let i = 0; i < bytes.length; ) { const channel_id = bytes[i++]; const channel_type = bytes[i++]; // BATTERY if (channel_id === 0x01 && channel_type === 0x75) { decoded.battery = bytes[i]; i += 1; } // DOOR / WINDOW STATE else if (channel_id === 0x03 && channel_type === 0x00) { decoded.state = bytes[i] === 0 ? "close" : "open"; i += 1; } // else if (channel_id === 0x04 && channel_type === 0x00) { decoded.install = bytes[i] === 0 ? "yes" : "no"; i += 1; } else { break; } } return decoded; } const ignore_vars = []; 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; } const payload_raw = payload.find((x) => x.variable === "payload_raw" || x.variable === "payload" || x.variable === "data"); if (payload_raw) { try { // Convert the data from Hex to Javascript Buffer. const buffer = Buffer.from(payload_raw.value, "hex"); const serie = new Date().getTime(); let payload_aux = Decoder(buffer); payload_aux = toTagoFormat(payload_aux, serie); payload = payload.concat(payload_aux.map((x) => ({ ...x, serie }))); } catch (e) { // Print the error to the Live Inspector. console.error(e); // Return the variable parse_error for debugging. payload = [{ variable: "parse_error", value: e.message }]; } }