NETVOX - Ra02G

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// ChirpStack Payload Codec for Netvox RA02G (LoRaWAN Wireless Vaping/Smoke/Noise Sensor) // Reference: Netvox RA02G User Manual (Hardware v0.5, 2024) // Typical uplink FPort: 6 (data), 7 (configuration), 0x20 (rejoin); this handles primary data // ---------------------------------------------------------------------------- // Codec developed by https://github.com/nishchayjeet // ---------------------------------------------------------------------------- function decodeUplink(input) { // input.bytes: Array of bytes from the device // input.fPort: LoRaWAN port (should be 6 for main data uplink) const data = input.bytes; let result = {}; // Map for deviceType and reportType values (RA02G specific) const DEVICE_TYPE_RA02G = 0xD7; // --- Handle Report Data (see manual §5.1, Table p.10) --- if (input.fPort === 6 && data.length >= 11 && data[1] === DEVICE_TYPE_RA02G) { const reportType = data[2]; if (reportType === 0x01) { // Data Packet (typical periodic uplink) // Format: [CmdID, DeviceType, ReportType, Batt, Smoke, Noise, Shock, PowerOff, Reserved x3] // Example: 01 D7 01 00 00 01 00 00 00 00 00 (see manual p.10) result = { deviceType: "RA02G", battery: data[3] === 0 ? "DC powered" : (data[3] * 0.1).toFixed(1) + "V", // 0 = DC, else 0.1V steps smokeAlarm: data[4] === 1, // IncenseSmokeAlarm: 0=no alarm, 1=alarm noiseAlarm: data[5] === 1, // HighSoundAlarm: 0=no alarm, 1=alarm tamperAlarm: data[6] === 1, // ShockAlarm: 0=no alarm, 1=alarm powerOffAlarm: data[7] === 1, // PowerOffAlarm: 0=no alarm, 1=alarm raw: bytesToHex(data) }; // Provide event names as tags (for ChirpStack compatibility) result.tags = {}; if (result.smokeAlarm) result.tags.smoke = "detected"; if (result.noiseAlarm) result.tags.noise = "detected"; if (result.tamperAlarm) result.tags.tamper = "triggered"; if (result.powerOffAlarm) result.tags.power = "outage"; // Useful for mapping to your LNS event result.eventType = ( result.smokeAlarm ? "Smoke/Vape Detected" : result.noiseAlarm ? "Noise Alarm" : result.tamperAlarm ? "Tamper/Vibration Alarm" : result.powerOffAlarm? "Power Outage" : "Normal" ); } else if (reportType === 0x00) { // Version Packet result = { deviceType: "RA02G", version: { software: "V" + data[3], hardware: data[4], datecode: ( (data[5] << 24 | data[6] << 16 | data[7] << 8 | data[8]).toString(16) ), }, raw: bytesToHex(data) }; } else { // Other report types (configuration, etc.) result = { warning: "Unhandled ReportType", reportType, raw: bytesToHex(data) }; } } else { // Handle other ports / unknown data result = { warning: "Unknown uplink format or unsupported FPort", fPort: input.fPort, raw: bytesToHex(data) }; } return { data: result }; } // Helper function: convert bytes to hex string for raw inspection function bytesToHex(bytes) { return bytes.map(x => ('0' + x.toString(16)).slice(-2)).join(''); }