mirror of
https://github.com/dz0ny/meshcore-sar.git
synced 2026-10-10 20:25:06 +00:00
chore: Initial commit
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XPovRHpejR4zRxuhjY4Qs3
This commit is contained in:
Janez Troha
942
lib/services/cayenne_lpp_parser.dart
Normal file
942
lib/services/cayenne_lpp_parser.dart
Normal file
@@ -0,0 +1,942 @@
|
||||
import 'package:flutter/foundation.dart';
|
||||
import 'package:latlong2/latlong.dart';
|
||||
import 'package:meshcore_client/meshcore_client.dart';
|
||||
|
||||
/// Cayenne LPP (Low Power Payload) data parser
|
||||
/// Used for decoding telemetry sensor data from MeshCore devices
|
||||
class CayenneLppParser {
|
||||
static const int _selfTelemetryChannel = 1;
|
||||
static const int _lppGenericSensor = 100;
|
||||
static const int _lppCurrent = 117;
|
||||
static const int _lppFrequency = 118;
|
||||
static const int _lppPercentage = 120;
|
||||
static const int _lppAltitude = 121;
|
||||
static const int _lppConcentration = 125;
|
||||
static const int _lppPower = 128;
|
||||
static const int _lppSpeed = 129;
|
||||
static const int _lppDistance = 130;
|
||||
static const int _lppEnergy = 131;
|
||||
static const int _lppDirection = 132;
|
||||
static const int _lppUnixTime = 133;
|
||||
static const int _lppColour = 135;
|
||||
static const int _lppGust = 137;
|
||||
static const int _lppDewPoint = 138;
|
||||
static const int _lppRain = 139;
|
||||
static const int _lppSwitch = 142;
|
||||
static const int _lppBinaryBool = 143;
|
||||
static const int _lppBinaryPowerSwitch = 144;
|
||||
static const int _lppBinaryOpen = 145;
|
||||
static const int _lppBinaryBatteryLow = 146;
|
||||
static const int _lppBinaryCharging = 147;
|
||||
static const int _lppBinaryCarbonMonoxide = 148;
|
||||
static const int _lppBinaryCold = 149;
|
||||
static const int _lppBinaryConnectivity = 150;
|
||||
static const int _lppBinaryDoor = 151;
|
||||
static const int _lppBinaryGarageDoor = 152;
|
||||
static const int _lppBinaryGas = 153;
|
||||
static const int _lppBinaryHeat = 154;
|
||||
static const int _lppBinaryLight = 155;
|
||||
static const int _lppBinaryLock = 156;
|
||||
static const int _lppBinaryMoisture = 157;
|
||||
static const int _lppBinaryMotion = 158;
|
||||
static const int _lppBinaryMoving = 159;
|
||||
static const int _lppBinaryOccupancy = 160;
|
||||
static const int _lppBinaryPlug = 161;
|
||||
static const int _lppBinaryPresence = 162;
|
||||
static const int _lppBinaryProblem = 163;
|
||||
static const int _lppBinaryRunning = 164;
|
||||
static const int _lppBinarySafety = 165;
|
||||
static const int _lppBinarySmoke = 166;
|
||||
static const int _lppBinarySound = 167;
|
||||
static const int _lppBinaryTamper = 168;
|
||||
static const int _lppBinaryVibration = 169;
|
||||
static const int _lppBinaryWindow = 170;
|
||||
static const int _lppButtonEvent = 171;
|
||||
static const int _lppDimmer = 172;
|
||||
static const int _lppUv = 173;
|
||||
static const int _lppLightLevel = 174;
|
||||
static const int _lppPm25 = 175;
|
||||
static const int _lppPm10 = 176;
|
||||
static const int _lppCo2 = 177;
|
||||
static const int _lppTvoc = 178;
|
||||
static const int _lppRpm = 179;
|
||||
static const int _lppConductivity = 180;
|
||||
static const int _lppRotation = 181;
|
||||
static const int _lppDuration = 182;
|
||||
static const int _lppAcceleration = 183;
|
||||
static const int _lppGyroRate = 184;
|
||||
static const int _lppVolume = 185;
|
||||
static const int _lppFlowRate = 186;
|
||||
static const int _lppVolumeStorage = 187;
|
||||
static const int _lppWater = 188;
|
||||
static const int _lppGasVolume = 189;
|
||||
static const int _lppMass = 190;
|
||||
static const int _lppSignedSpeed = 191;
|
||||
static const int _lppSignedPower = 192;
|
||||
static const int _lppSignedCurrent = 193;
|
||||
|
||||
/// Parse Cayenne LPP data into ContactTelemetry
|
||||
static ContactTelemetry parse(Uint8List data) {
|
||||
debugPrint(' [CayenneLPP] Parsing LPP data...');
|
||||
debugPrint(' Data length: ${data.length} bytes');
|
||||
debugPrint(
|
||||
' Data (hex): ${data.map((b) => b.toRadixString(16).padLeft(2, '0')).join(' ')}',
|
||||
);
|
||||
|
||||
final reader = BufferReader(data);
|
||||
|
||||
LatLng? gpsLocation;
|
||||
double? batteryPercentage;
|
||||
double? batteryMilliVolts;
|
||||
double? deferredBatteryMilliVolts;
|
||||
double? deferredBatteryPercentage;
|
||||
double? temperature;
|
||||
double? humidity;
|
||||
double? pressure;
|
||||
final extraSensorData = <String, dynamic>{};
|
||||
bool sawNonSelfChannel = false;
|
||||
|
||||
int fieldCount = 0;
|
||||
while (reader.hasRemaining) {
|
||||
if (fieldCount > 0 &&
|
||||
_isZeroPaddedTail(data, reader.remainingBytesCount)) {
|
||||
debugPrint(
|
||||
' Detected zero-padded telemetry tail, stopping parse at position '
|
||||
'${data.length - reader.remainingBytesCount}',
|
||||
);
|
||||
break;
|
||||
}
|
||||
|
||||
try {
|
||||
fieldCount++;
|
||||
debugPrint(
|
||||
' [Field $fieldCount] Position: ${data.length - reader.remainingBytesCount}',
|
||||
);
|
||||
|
||||
final channel = reader.readByte();
|
||||
debugPrint(' Channel: $channel');
|
||||
if (channel != _selfTelemetryChannel) {
|
||||
sawNonSelfChannel = true;
|
||||
}
|
||||
|
||||
final type = reader.readByte();
|
||||
debugPrint(
|
||||
' Type: $type (0x${type.toRadixString(16).padLeft(2, '0')})',
|
||||
);
|
||||
|
||||
switch (type) {
|
||||
case MeshCoreConstants.lppDigitalInput:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Digital Input: $value');
|
||||
extraSensorData['digital_input_$channel'] = value;
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppDigitalOutput:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Digital Output: $value');
|
||||
extraSensorData['digital_output_$channel'] = value;
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppAnalogInput:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue / 100.0;
|
||||
debugPrint(' Analog Input (raw): $rawValue');
|
||||
debugPrint(' Analog Input (volts): ${value}V');
|
||||
if (_isDedicatedBatteryChannel(channel)) {
|
||||
batteryMilliVolts = value * 1000;
|
||||
batteryPercentage = _calculateBatteryPercentage(value);
|
||||
extraSensorData[_sourceChannelKey('battery')] = channel;
|
||||
extraSensorData[_sourceChannelKey('voltage')] = channel;
|
||||
debugPrint(
|
||||
' → Battery: ${batteryPercentage.toStringAsFixed(1)}% (${batteryMilliVolts.toStringAsFixed(0)}mV)',
|
||||
);
|
||||
} else if (_isDeferredBatteryChannel(channel)) {
|
||||
deferredBatteryMilliVolts = value * 1000;
|
||||
deferredBatteryPercentage = _calculateBatteryPercentage(value);
|
||||
extraSensorData['analog_input_$channel'] = value;
|
||||
} else {
|
||||
extraSensorData['analog_input_$channel'] = value;
|
||||
}
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppAnalogOutput:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue / 100.0;
|
||||
debugPrint(' Analog Output (raw): $rawValue');
|
||||
debugPrint(' Analog Output (volts): ${value}V');
|
||||
extraSensorData['analog_output_$channel'] = value;
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppIlluminanceSensor:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' Illuminance: $value lux');
|
||||
extraSensorData['illuminance_$channel'] = value;
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppPresenceSensor:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Presence: $value');
|
||||
extraSensorData['presence_$channel'] = value;
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppTemperatureSensor:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue / 10.0;
|
||||
debugPrint(' Temperature (raw): $rawValue');
|
||||
debugPrint(' Temperature: ${value.toStringAsFixed(1)}°C');
|
||||
if (channel == _selfTelemetryChannel) {
|
||||
temperature = value;
|
||||
extraSensorData[_sourceChannelKey('temperature')] = channel;
|
||||
} else {
|
||||
extraSensorData['temperature_$channel'] = value;
|
||||
if (temperature == null) {
|
||||
temperature = value;
|
||||
extraSensorData[_sourceChannelKey('temperature')] = channel;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppHumiditySensor:
|
||||
final rawValue = reader.readByte();
|
||||
final value = rawValue / 2.0;
|
||||
debugPrint(' Humidity (raw): $rawValue');
|
||||
debugPrint(' Humidity: ${value.toStringAsFixed(1)}%');
|
||||
if (channel == _selfTelemetryChannel) {
|
||||
humidity = value;
|
||||
extraSensorData[_sourceChannelKey('humidity')] = channel;
|
||||
} else {
|
||||
extraSensorData['humidity_$channel'] = value;
|
||||
if (humidity == null) {
|
||||
humidity = value;
|
||||
extraSensorData[_sourceChannelKey('humidity')] = channel;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppAccelerometer:
|
||||
final x = reader.readInt16BE() / 1000.0;
|
||||
final y = reader.readInt16BE() / 1000.0;
|
||||
final z = reader.readInt16BE() / 1000.0;
|
||||
debugPrint(' Accelerometer: x=$x, y=$y, z=$z');
|
||||
extraSensorData['accelerometer_$channel'] = {
|
||||
'x': x,
|
||||
'y': y,
|
||||
'z': z,
|
||||
};
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppBarometer:
|
||||
final rawValue = reader.readUInt16BE();
|
||||
final value = rawValue / 10.0;
|
||||
debugPrint(' Barometer (raw): $rawValue');
|
||||
debugPrint(' Barometer: ${value.toStringAsFixed(1)} hPa');
|
||||
if (channel == _selfTelemetryChannel) {
|
||||
pressure = value;
|
||||
extraSensorData[_sourceChannelKey('pressure')] = channel;
|
||||
} else {
|
||||
extraSensorData['pressure_$channel'] = value;
|
||||
if (pressure == null) {
|
||||
pressure = value;
|
||||
extraSensorData[_sourceChannelKey('pressure')] = channel;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppVoltageSensor:
|
||||
final rawValue = reader.readUInt16BE();
|
||||
final value = rawValue / 100.0;
|
||||
debugPrint(' Voltage (raw): $rawValue');
|
||||
debugPrint(' Voltage: ${value}V');
|
||||
if (_isDedicatedBatteryChannel(channel)) {
|
||||
batteryMilliVolts = value * 1000;
|
||||
batteryPercentage = _calculateBatteryPercentage(value);
|
||||
extraSensorData[_sourceChannelKey('battery')] = channel;
|
||||
extraSensorData[_sourceChannelKey('voltage')] = channel;
|
||||
debugPrint(
|
||||
' → Battery: ${batteryPercentage.toStringAsFixed(1)}% (${batteryMilliVolts.toStringAsFixed(0)}mV)',
|
||||
);
|
||||
} else if (_isDeferredBatteryChannel(channel)) {
|
||||
deferredBatteryMilliVolts = value * 1000;
|
||||
deferredBatteryPercentage = _calculateBatteryPercentage(value);
|
||||
extraSensorData['voltage_$channel'] = value;
|
||||
} else {
|
||||
extraSensorData['voltage_$channel'] = value;
|
||||
}
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppGyrometer:
|
||||
final x = reader.readInt16BE() / 100.0;
|
||||
final y = reader.readInt16BE() / 100.0;
|
||||
final z = reader.readInt16BE() / 100.0;
|
||||
debugPrint(' Gyrometer: x=$x, y=$y, z=$z');
|
||||
extraSensorData['gyrometer_$channel'] = {'x': x, 'y': y, 'z': z};
|
||||
break;
|
||||
|
||||
case MeshCoreConstants.lppGps:
|
||||
// Standard Cayenne LPP GPS format (type 0x88):
|
||||
// - Latitude: 3 bytes, signed 24-bit, big-endian, × 10000
|
||||
// - Longitude: 3 bytes, signed 24-bit, big-endian, × 10000
|
||||
// - Altitude: 3 bytes, signed 24-bit, big-endian, × 100
|
||||
// Total: 9 bytes (not the 12 bytes used in MeshCore advertisements!)
|
||||
|
||||
// Read 3-byte signed big-endian integers
|
||||
final latBytes = reader.readBytes(3);
|
||||
int rawLat = (latBytes[0] << 16) | (latBytes[1] << 8) | latBytes[2];
|
||||
// Sign extend from 24-bit to 32-bit
|
||||
if (rawLat > 0x7FFFFF) rawLat = rawLat - 0x1000000;
|
||||
|
||||
final lonBytes = reader.readBytes(3);
|
||||
int rawLon = (lonBytes[0] << 16) | (lonBytes[1] << 8) | lonBytes[2];
|
||||
if (rawLon > 0x7FFFFF) rawLon = rawLon - 0x1000000;
|
||||
|
||||
final altBytes = reader.readBytes(3);
|
||||
int rawAlt = (altBytes[0] << 16) | (altBytes[1] << 8) | altBytes[2];
|
||||
if (rawAlt > 0x7FFFFF) rawAlt = rawAlt - 0x1000000;
|
||||
|
||||
// Decode: divide by scaling factors
|
||||
final lat = rawLat / 10000.0;
|
||||
final lon = rawLon / 10000.0;
|
||||
final alt = rawAlt / 100.0;
|
||||
|
||||
debugPrint(
|
||||
' GPS Location (raw 24-bit BE): lat=$rawLat (0x${rawLat.toRadixString(16).padLeft(6, '0')}), lon=$rawLon (0x${rawLon.toRadixString(16).padLeft(6, '0')}), alt=$rawAlt (0x${rawAlt.toRadixString(16).padLeft(6, '0')})',
|
||||
);
|
||||
debugPrint(
|
||||
' GPS Location (decoded): ${lat.toStringAsFixed(6)}°, ${lon.toStringAsFixed(6)}°, altitude=${alt.toStringAsFixed(2)}m',
|
||||
);
|
||||
|
||||
// Validate coordinates are in valid range
|
||||
if (lat < -90.0 || lat > 90.0) {
|
||||
debugPrint(' ⚠️ WARNING: Latitude out of range: $lat°');
|
||||
}
|
||||
if (lon < -180.0 || lon > 180.0) {
|
||||
debugPrint(' ⚠️ WARNING: Longitude out of range: $lon°');
|
||||
}
|
||||
|
||||
gpsLocation = LatLng(lat, lon);
|
||||
extraSensorData[_sourceChannelKey('gps')] = channel;
|
||||
extraSensorData['altitude_$channel'] = alt;
|
||||
break;
|
||||
|
||||
case _lppGenericSensor:
|
||||
final value = _readUInt32BE(reader).toDouble();
|
||||
debugPrint(' Generic Sensor: $value');
|
||||
extraSensorData['generic_sensor_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppCurrent:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Current (raw): $rawValue');
|
||||
debugPrint(' Current: ${value}A');
|
||||
extraSensorData['current_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppFrequency:
|
||||
final value = _readUInt32BE(reader).toDouble();
|
||||
debugPrint(' Frequency: ${value}Hz');
|
||||
extraSensorData['frequency_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppPercentage:
|
||||
final value = reader.readByte().toDouble();
|
||||
debugPrint(' Percentage: $value%');
|
||||
if (_isDedicatedBatteryChannel(channel) || _isDeferredBatteryChannel(channel)) {
|
||||
batteryPercentage = value;
|
||||
extraSensorData[_sourceChannelKey('battery')] = channel;
|
||||
} else {
|
||||
extraSensorData['percentage_$channel'] = value;
|
||||
}
|
||||
break;
|
||||
|
||||
case _lppAltitude:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue.toDouble();
|
||||
debugPrint(' Altitude: ${value}m');
|
||||
extraSensorData['altitude_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppConcentration:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' Concentration: ${value}ppm');
|
||||
extraSensorData['concentration_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppPower:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' Power: ${value}W');
|
||||
extraSensorData['power_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppSpeed:
|
||||
final rawValue = reader.readUInt16BE();
|
||||
final value = rawValue / 100.0;
|
||||
debugPrint(' Speed: ${value}m/s');
|
||||
extraSensorData['speed_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppDistance:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Distance: ${value}m');
|
||||
extraSensorData['distance_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppEnergy:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Energy: ${value}kWh');
|
||||
extraSensorData['energy_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppDirection:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' Direction: $value°');
|
||||
extraSensorData['direction_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppUnixTime:
|
||||
final value = _readUInt32BE(reader);
|
||||
debugPrint(' Unix time: $value');
|
||||
extraSensorData['unixtime_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppColour:
|
||||
final red = reader.readByte();
|
||||
final green = reader.readByte();
|
||||
final blue = reader.readByte();
|
||||
debugPrint(' Colour: r=$red, g=$green, b=$blue');
|
||||
extraSensorData['colour_$channel'] = {
|
||||
'r': red,
|
||||
'g': green,
|
||||
'b': blue,
|
||||
};
|
||||
break;
|
||||
|
||||
case _lppGust:
|
||||
final rawValue = reader.readUInt16BE();
|
||||
final value = rawValue / 100.0;
|
||||
debugPrint(' Gust: ${value}m/s');
|
||||
extraSensorData['gust_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppDewPoint:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue / 10.0;
|
||||
debugPrint(' Dew point: ${value.toStringAsFixed(1)}°C');
|
||||
extraSensorData['dew_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppRain:
|
||||
final rawValue = reader.readUInt16BE();
|
||||
final value = rawValue / 10.0;
|
||||
debugPrint(' Rain: ${value}mm');
|
||||
extraSensorData['rain_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppBinaryBool:
|
||||
case _lppBinaryPowerSwitch:
|
||||
case _lppBinaryOpen:
|
||||
case _lppBinaryBatteryLow:
|
||||
case _lppBinaryCharging:
|
||||
case _lppBinaryCarbonMonoxide:
|
||||
case _lppBinaryCold:
|
||||
case _lppBinaryConnectivity:
|
||||
case _lppBinaryDoor:
|
||||
case _lppBinaryGarageDoor:
|
||||
case _lppBinaryGas:
|
||||
case _lppBinaryHeat:
|
||||
case _lppBinaryLight:
|
||||
case _lppBinaryLock:
|
||||
case _lppBinaryMoisture:
|
||||
case _lppBinaryMotion:
|
||||
case _lppBinaryMoving:
|
||||
case _lppBinaryOccupancy:
|
||||
case _lppBinaryPlug:
|
||||
case _lppBinaryPresence:
|
||||
case _lppBinaryProblem:
|
||||
case _lppBinaryRunning:
|
||||
case _lppBinarySafety:
|
||||
case _lppBinarySmoke:
|
||||
case _lppBinarySound:
|
||||
case _lppBinaryTamper:
|
||||
case _lppBinaryVibration:
|
||||
case _lppBinaryWindow:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Binary state: $value');
|
||||
extraSensorData['${_binaryMetricKeyForType(type)}_$channel'] =
|
||||
value;
|
||||
break;
|
||||
|
||||
case _lppButtonEvent:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Button event: $value');
|
||||
extraSensorData['button_event_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppDimmer:
|
||||
final value = _readInt8(reader);
|
||||
debugPrint(' Dimmer: $value');
|
||||
extraSensorData['dimmer_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppUv:
|
||||
final value = reader.readByte() / 10.0;
|
||||
debugPrint(' UV index: $value');
|
||||
extraSensorData['uv_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppLightLevel:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Light level: $value');
|
||||
extraSensorData['light_level_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppPm25:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' PM2.5: $value');
|
||||
extraSensorData['pm25_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppPm10:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' PM10: $value');
|
||||
extraSensorData['pm10_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppCo2:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' CO2: $value');
|
||||
extraSensorData['co2_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppTvoc:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' TVOC: $value');
|
||||
extraSensorData['tvoc_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppRpm:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' RPM: $value');
|
||||
extraSensorData['rpm_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppConductivity:
|
||||
final value = reader.readUInt16BE().toDouble();
|
||||
debugPrint(' Conductivity: $value');
|
||||
extraSensorData['conductivity_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppRotation:
|
||||
final rawValue = reader.readInt16BE();
|
||||
final value = rawValue / 10.0;
|
||||
debugPrint(' Rotation: $value');
|
||||
extraSensorData['rotation_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppDuration:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Duration: $value s');
|
||||
extraSensorData['duration_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppAcceleration:
|
||||
final rawValue = _readInt32BE(reader);
|
||||
final value = rawValue / 1000000.0;
|
||||
debugPrint(' Acceleration: $value');
|
||||
extraSensorData['acceleration_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppGyroRate:
|
||||
final rawValue = _readInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Gyro rate: $value');
|
||||
extraSensorData['gyro_rate_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppVolume:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Volume: $value');
|
||||
extraSensorData['volume_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppFlowRate:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Flow rate: $value');
|
||||
extraSensorData['flow_rate_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppVolumeStorage:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Storage volume: $value');
|
||||
extraSensorData['volume_storage_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppWater:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Water: $value');
|
||||
extraSensorData['water_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppGasVolume:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Gas volume: $value');
|
||||
extraSensorData['gas_volume_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppMass:
|
||||
final rawValue = _readUInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Mass: $value');
|
||||
extraSensorData['mass_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppSignedSpeed:
|
||||
final rawValue = _readInt32BE(reader);
|
||||
final value = rawValue / 1000000.0;
|
||||
debugPrint(' Signed speed: $value');
|
||||
extraSensorData['signed_speed_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppSignedPower:
|
||||
final rawValue = _readInt32BE(reader);
|
||||
final value = rawValue / 100.0;
|
||||
debugPrint(' Signed power: $value');
|
||||
extraSensorData['signed_power_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppSignedCurrent:
|
||||
final rawValue = _readInt32BE(reader);
|
||||
final value = rawValue / 1000.0;
|
||||
debugPrint(' Signed current: $value');
|
||||
extraSensorData['signed_current_$channel'] = value;
|
||||
break;
|
||||
|
||||
case _lppSwitch:
|
||||
final value = reader.readByte();
|
||||
debugPrint(' Switch: $value');
|
||||
extraSensorData['switch_$channel'] = value;
|
||||
break;
|
||||
|
||||
default:
|
||||
final size = _payloadSizeForType(type);
|
||||
if (size == null || reader.remainingBytesCount < size) {
|
||||
debugPrint(
|
||||
' ⚠️ Unknown type $type with unsupported size, stopping parse',
|
||||
);
|
||||
reader.skip(reader.remainingBytesCount);
|
||||
break;
|
||||
}
|
||||
debugPrint(' ⚠️ Unknown type $type, skipping $size bytes');
|
||||
reader.skip(size);
|
||||
break;
|
||||
}
|
||||
} catch (e) {
|
||||
debugPrint(' ❌ Parsing error: $e');
|
||||
// If we encounter a parsing error, break and return what we have
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (batteryMilliVolts == null &&
|
||||
batteryPercentage == null &&
|
||||
deferredBatteryMilliVolts != null &&
|
||||
deferredBatteryPercentage != null &&
|
||||
!sawNonSelfChannel) {
|
||||
batteryMilliVolts = deferredBatteryMilliVolts;
|
||||
batteryPercentage = deferredBatteryPercentage;
|
||||
extraSensorData[_sourceChannelKey('battery')] = _selfTelemetryChannel;
|
||||
extraSensorData[_sourceChannelKey('voltage')] = _selfTelemetryChannel;
|
||||
debugPrint(
|
||||
' Promoted self-channel voltage to battery: '
|
||||
'${batteryPercentage.toStringAsFixed(1)}% (${batteryMilliVolts.toStringAsFixed(0)}mV)',
|
||||
);
|
||||
}
|
||||
|
||||
debugPrint(' Parsed $fieldCount fields');
|
||||
debugPrint(' ✅ [CayenneLPP] Parsing complete');
|
||||
debugPrint(
|
||||
' GPS: ${gpsLocation != null ? '${gpsLocation.latitude}°, ${gpsLocation.longitude}°' : 'none'}',
|
||||
);
|
||||
debugPrint(
|
||||
' Battery: ${batteryPercentage != null ? '${batteryPercentage.toStringAsFixed(1)}%' : 'none'}',
|
||||
);
|
||||
debugPrint(
|
||||
' Temperature: ${temperature != null ? '${temperature.toStringAsFixed(1)}°C' : 'none'}',
|
||||
);
|
||||
|
||||
// IMPORTANT: Cayenne LPP format does NOT include a timestamp field.
|
||||
// We use DateTime.now() as the timestamp, which represents when the data
|
||||
// was RECEIVED/PARSED by the app, NOT when it was collected by the device.
|
||||
//
|
||||
// This means:
|
||||
// - If the device sends cached/old telemetry data, the timestamp will still
|
||||
// show as "recent" (a few seconds ago) because it was just received
|
||||
// - The actual age of the telemetry data cannot be determined from the LPP format
|
||||
// - Devices may cache telemetry for hours and send it later when requested
|
||||
final parseTimestamp = DateTime.now();
|
||||
debugPrint(
|
||||
' Timestamp: $parseTimestamp (parse time, NOT device collection time)',
|
||||
);
|
||||
|
||||
return ContactTelemetry(
|
||||
gpsLocation: gpsLocation,
|
||||
batteryPercentage: batteryPercentage,
|
||||
batteryMilliVolts: batteryMilliVolts,
|
||||
temperature: temperature,
|
||||
humidity: humidity,
|
||||
pressure: pressure,
|
||||
timestamp: parseTimestamp,
|
||||
extraSensorData: extraSensorData.isNotEmpty ? extraSensorData : null,
|
||||
);
|
||||
}
|
||||
|
||||
/// Calculate battery percentage from voltage (V)
|
||||
static double _calculateBatteryPercentage(double voltage) {
|
||||
// Standard lithium battery curve: 3.0V = 0%, 4.2V = 100%
|
||||
if (voltage <= 3.0) return 0.0;
|
||||
if (voltage >= 4.2) return 100.0;
|
||||
return ((voltage - 3.0) / 1.2) * 100.0;
|
||||
}
|
||||
|
||||
static bool _isDedicatedBatteryChannel(int channel) => channel == 0;
|
||||
|
||||
static bool _isDeferredBatteryChannel(int channel) =>
|
||||
channel == _selfTelemetryChannel;
|
||||
|
||||
static int _readUInt32BE(BufferReader reader) {
|
||||
final bytes = reader.readBytes(4);
|
||||
return (bytes[0] << 24) | (bytes[1] << 16) | (bytes[2] << 8) | bytes[3];
|
||||
}
|
||||
|
||||
static int _readInt32BE(BufferReader reader) {
|
||||
final value = _readUInt32BE(reader);
|
||||
if ((value & 0x80000000) != 0) {
|
||||
return value - 0x100000000;
|
||||
}
|
||||
return value;
|
||||
}
|
||||
|
||||
static int _readInt8(BufferReader reader) {
|
||||
final value = reader.readByte();
|
||||
if ((value & 0x80) != 0) {
|
||||
return value - 0x100;
|
||||
}
|
||||
return value;
|
||||
}
|
||||
|
||||
static String _sourceChannelKey(String fieldKey) =>
|
||||
'__source_channel:$fieldKey';
|
||||
|
||||
static String _binaryMetricKeyForType(int type) {
|
||||
switch (type) {
|
||||
case _lppBinaryBool:
|
||||
return 'binary_bool';
|
||||
case _lppBinaryPowerSwitch:
|
||||
return 'binary_power_switch';
|
||||
case _lppBinaryOpen:
|
||||
return 'binary_open';
|
||||
case _lppBinaryBatteryLow:
|
||||
return 'binary_battery_low';
|
||||
case _lppBinaryCharging:
|
||||
return 'binary_charging';
|
||||
case _lppBinaryCarbonMonoxide:
|
||||
return 'binary_carbon_monoxide';
|
||||
case _lppBinaryCold:
|
||||
return 'binary_cold';
|
||||
case _lppBinaryConnectivity:
|
||||
return 'binary_connectivity';
|
||||
case _lppBinaryDoor:
|
||||
return 'binary_door';
|
||||
case _lppBinaryGarageDoor:
|
||||
return 'binary_garage_door';
|
||||
case _lppBinaryGas:
|
||||
return 'binary_gas';
|
||||
case _lppBinaryHeat:
|
||||
return 'binary_heat';
|
||||
case _lppBinaryLight:
|
||||
return 'binary_light';
|
||||
case _lppBinaryLock:
|
||||
return 'binary_lock';
|
||||
case _lppBinaryMoisture:
|
||||
return 'binary_moisture';
|
||||
case _lppBinaryMotion:
|
||||
return 'binary_motion';
|
||||
case _lppBinaryMoving:
|
||||
return 'binary_moving';
|
||||
case _lppBinaryOccupancy:
|
||||
return 'binary_occupancy';
|
||||
case _lppBinaryPlug:
|
||||
return 'binary_plug';
|
||||
case _lppBinaryPresence:
|
||||
return 'binary_presence';
|
||||
case _lppBinaryProblem:
|
||||
return 'binary_problem';
|
||||
case _lppBinaryRunning:
|
||||
return 'binary_running';
|
||||
case _lppBinarySafety:
|
||||
return 'binary_safety';
|
||||
case _lppBinarySmoke:
|
||||
return 'binary_smoke';
|
||||
case _lppBinarySound:
|
||||
return 'binary_sound';
|
||||
case _lppBinaryTamper:
|
||||
return 'binary_tamper';
|
||||
case _lppBinaryVibration:
|
||||
return 'binary_vibration';
|
||||
case _lppBinaryWindow:
|
||||
return 'binary_window';
|
||||
}
|
||||
return 'binary_state';
|
||||
}
|
||||
|
||||
static int? _payloadSizeForType(int type) {
|
||||
if (type >= _lppBinaryBool && type <= _lppBinaryWindow) {
|
||||
return 1;
|
||||
}
|
||||
switch (type) {
|
||||
case MeshCoreConstants.lppDigitalInput:
|
||||
case MeshCoreConstants.lppDigitalOutput:
|
||||
case MeshCoreConstants.lppPresenceSensor:
|
||||
case MeshCoreConstants.lppHumiditySensor:
|
||||
case _lppPercentage:
|
||||
case _lppSwitch:
|
||||
case _lppButtonEvent:
|
||||
case _lppDimmer:
|
||||
case _lppUv:
|
||||
case _lppLightLevel:
|
||||
return 1;
|
||||
case MeshCoreConstants.lppAnalogInput:
|
||||
case MeshCoreConstants.lppAnalogOutput:
|
||||
case MeshCoreConstants.lppIlluminanceSensor:
|
||||
case MeshCoreConstants.lppTemperatureSensor:
|
||||
case MeshCoreConstants.lppBarometer:
|
||||
case MeshCoreConstants.lppVoltageSensor:
|
||||
case _lppCurrent:
|
||||
case _lppAltitude:
|
||||
case _lppConcentration:
|
||||
case _lppPower:
|
||||
case _lppSpeed:
|
||||
case _lppDirection:
|
||||
case _lppGust:
|
||||
case _lppDewPoint:
|
||||
case _lppRain:
|
||||
case _lppPm25:
|
||||
case _lppPm10:
|
||||
case _lppCo2:
|
||||
case _lppTvoc:
|
||||
case _lppRpm:
|
||||
case _lppConductivity:
|
||||
case _lppRotation:
|
||||
return 2;
|
||||
case MeshCoreConstants.lppAccelerometer:
|
||||
case MeshCoreConstants.lppGyrometer:
|
||||
return 6;
|
||||
case MeshCoreConstants.lppGps:
|
||||
return 9;
|
||||
case _lppGenericSensor:
|
||||
case _lppFrequency:
|
||||
case _lppDistance:
|
||||
case _lppEnergy:
|
||||
case _lppUnixTime:
|
||||
case _lppDuration:
|
||||
case _lppAcceleration:
|
||||
case _lppGyroRate:
|
||||
case _lppVolume:
|
||||
case _lppFlowRate:
|
||||
case _lppVolumeStorage:
|
||||
case _lppWater:
|
||||
case _lppGasVolume:
|
||||
case _lppMass:
|
||||
case _lppSignedSpeed:
|
||||
case _lppSignedPower:
|
||||
case _lppSignedCurrent:
|
||||
return 4;
|
||||
case _lppColour:
|
||||
return 3;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
static bool _isZeroPaddedTail(Uint8List data, int remainingBytes) {
|
||||
final start = data.length - remainingBytes;
|
||||
for (int i = start; i < data.length; i++) {
|
||||
if (data[i] != 0) return false;
|
||||
}
|
||||
return remainingBytes > 0;
|
||||
}
|
||||
|
||||
/// Create Cayenne LPP data for GPS location
|
||||
/// Standard Cayenne LPP GPS format (type 0x88):
|
||||
/// - Latitude: 3 bytes, signed 24-bit, big-endian, × 10000
|
||||
/// - Longitude: 3 bytes, signed 24-bit, big-endian, × 10000
|
||||
/// - Altitude: 3 bytes, signed 24-bit, big-endian, × 100
|
||||
static Uint8List createGpsData({
|
||||
required double latitude,
|
||||
required double longitude,
|
||||
double altitude = 0.0,
|
||||
int channel = 0,
|
||||
}) {
|
||||
final buffer = <int>[];
|
||||
|
||||
buffer.add(channel);
|
||||
buffer.add(MeshCoreConstants.lppGps);
|
||||
|
||||
// Latitude (signed 24-bit BE, 3 bytes, 0.0001° precision)
|
||||
int lat = (latitude * 10000).round();
|
||||
// Handle negative values (two's complement for 24-bit)
|
||||
if (lat < 0) lat = lat + 0x1000000;
|
||||
buffer.add((lat >> 16) & 0xFF); // Byte 0 (MSB)
|
||||
buffer.add((lat >> 8) & 0xFF); // Byte 1
|
||||
buffer.add(lat & 0xFF); // Byte 2 (LSB)
|
||||
|
||||
// Longitude (signed 24-bit BE, 3 bytes, 0.0001° precision)
|
||||
int lon = (longitude * 10000).round();
|
||||
if (lon < 0) lon = lon + 0x1000000;
|
||||
buffer.add((lon >> 16) & 0xFF); // Byte 0 (MSB)
|
||||
buffer.add((lon >> 8) & 0xFF); // Byte 1
|
||||
buffer.add(lon & 0xFF); // Byte 2 (LSB)
|
||||
|
||||
// Altitude (signed 24-bit BE, 3 bytes, 0.01m precision)
|
||||
int alt = (altitude * 100).round();
|
||||
if (alt < 0) alt = alt + 0x1000000;
|
||||
buffer.add((alt >> 16) & 0xFF); // Byte 0 (MSB)
|
||||
buffer.add((alt >> 8) & 0xFF); // Byte 1
|
||||
buffer.add(alt & 0xFF); // Byte 2 (LSB)
|
||||
|
||||
return Uint8List.fromList(buffer);
|
||||
}
|
||||
|
||||
/// Create Cayenne LPP data for temperature
|
||||
static Uint8List createTemperatureData(double celsius, {int channel = 0}) {
|
||||
final buffer = <int>[];
|
||||
buffer.add(channel);
|
||||
buffer.add(MeshCoreConstants.lppTemperatureSensor);
|
||||
|
||||
final temp = (celsius * 10).round();
|
||||
buffer.add((temp >> 8) & 0xFF);
|
||||
buffer.add(temp & 0xFF);
|
||||
|
||||
return Uint8List.fromList(buffer);
|
||||
}
|
||||
|
||||
/// Create Cayenne LPP data for battery voltage
|
||||
static Uint8List createBatteryData(double voltage, {int channel = 0}) {
|
||||
final buffer = <int>[];
|
||||
buffer.add(channel);
|
||||
buffer.add(MeshCoreConstants.lppAnalogInput);
|
||||
|
||||
final volts = (voltage * 100).round();
|
||||
buffer.add((volts >> 8) & 0xFF);
|
||||
buffer.add(volts & 0xFF);
|
||||
|
||||
return Uint8List.fromList(buffer);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user