TTN Smart Sensor (Elv)

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/* * ELV-LW-SWD Payload Parser * * Version: V1.0.4 * * */ function decodeUplink(input) { var data = input.bytes; var valid = true; if (typeof Decoder === "function") { data = Decoder(data, input.fPort); } if (typeof Converter === "function") { data = Converter(data, input.fPort); } if (typeof Validator === "function") { valid = Validator(data, input.fPort); } if (valid) { return{ data: data }; } else { return{ data: {}, errors: ["Invalid data received"] }; } } var tx_reason = ["Reserved", "Join Button Pressed", "Cyclic Timer", "Settings", "Joined", "Tilt", "Dryness", "Moisture", "Water",]; var frame_type = ["Device_Info", "Device_State", "Sensor_Data", "Config_Data"]; var device_modes = ["Dryness", "Moisture", "Water", "Tilt"]; /* * @brief Receives the bytes transmitted from a device of the ELV-LW-OMO * @param bytes: Array with the data stream * @param port: Used TTN/TTS data port * @return Decoded data from a device of the ELV-LW-SWD * */ function Decoder(bytes, port) { var decoded = {}; // Container with the decoded output if (port === 10) { // The default port for app data // Minimum 5 Bytes for Header // Collecting header data decoded.Supply_Voltage = parseFloat((1 + (bytes[0] >> 6)) + (bytes[0] & 0x3F)*0.02); decoded.Frame_Type = frame_type[(bytes[1])]; //Frametype encodes what Kind of Payload is being send decoded.TX_Reason = tx_reason[(bytes[2])]; //Write every reason for sending correspondig to bit n switch (decoded.Frame_Type) { case "Device_Info": { var bl_version_major = bytes[3]; var bl_version_minor = bytes[4]; var bl_version_patch = bytes[5]; decoded.Bootloader_Version = `${bl_version_major}.${bl_version_minor}.${bl_version_patch}`; //Build version-String from 3 previous values var fw_version_major = bytes[6]; var fw_version_minor = bytes[7]; var fw_version_patch = bytes[8]; decoded.Firmware_Version = `${fw_version_major}.${fw_version_minor}.${fw_version_patch}`;//Build version-String from 3 previous values decoded.Hw_Revision = bytes[9] << 8 | bytes[10]; //Hardware version is encoded as 16-Bit int break; } case "Device_State": { decoded.Error_Msg = bytes[3]; decoded.Dryness = !!(bytes[4] & 0x1); decoded.Moisture = !!(bytes[4] & 0x2); decoded.Water = !!(bytes[4] & 0x4); decoded.Tilt_Angle = bytes[5]; decoded.Activation_count = (bytes[6] << 8 | bytes[7]); break; } case "Sensor_Data": { decoded.Error_Msg = bytes[3]; decoded.Dry = !!(bytes[4] & 0x1); decoded.Moisture = !!(bytes[4] & 0x2); decoded.Water = !!(bytes[4] & 0x4); decoded.Tilt_Angle = bytes[5]; break; } case "Config_Data": { decoded.Datarate = `DR${bytes[3] + 1}`; decoded.Send_Cycle = bytes[4]; decoded.Device_Mode = ""; for(let i = 0; i < 8; i++) { if((bytes[5] >> i) & 1) { decoded.Device_Mode += device_modes[i]; } } decoded.Trigger_Angle = bytes[6]; decoded.Acoustic_Alarm_Trigger_Source = bytes[7]; decoded.Acoustic_Alarm_Signal_Dryness = bytes[8]; decoded.Acoustic_Alarm_Duration_Dryness = bytes[9]; decoded.Acoustic_Alarm_Signal_Moisture = bytes[10]; decoded.Acoustic_Alarm_Duration_Moisture = bytes[11]; decoded.Acoustic_Alarm_Signal_Water = bytes[12]; decoded.Acoustic_Alarm_Duration_Water = bytes[13]; decoded.Acoustic_Alarm_Signal_Flat = bytes[14]; decoded.Acoustic_Alarm_Duration_Flat = bytes[15]; decoded.Acoustic_Alarm_Signal_Tilt = bytes[16]; decoded.Acoustic_Alarm_Duration_Tilt = bytes[17]; break; } } } else { decoded.parser_error = "Wrong Port Number"; } return decoded; }