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| // UWB Badge Tracker decoder
function decodeUplink(input) {
// bytes
var bytes = input.bytes;
// type
var type = (bytes[0] >> 4) & 0x0f;
switch (type) {
case 0x01:
return {data: decodeRegistration(bytes)};
case 0x02:
return {data: decodeHeartbeat(bytes)};
case 0x03:
return {data: decodeGNSSPosition(bytes)};
case 0x04:
return {data: decodeBeacon(bytes)};
case 0x05:
return {data: decodeAlarm(bytes)};
case 0x06:
return {data: decodeSingleConfigurationParameter(bytes)};
case 0x07:
return {data: decodeRuleBeacon(bytes)};
case 0x08:
return {data: decodeDistance(bytes)};
default:
return;
}
}
// type: 0x1 Registration
function decodeRegistration(bytes) {
var data = {};
data.type = "RegistrationMessage";
data.softwareVersion = ((bytes[1] << 8) & 0xff00) | (bytes[2] & 0xff);
data.hardwareVersion = ((bytes[3] << 8) & 0xff00) | (bytes[4] & 0xff);
data.deviceState =
(bytes[5] << 24) | (bytes[6] << 16) | (bytes[7] << 8) | bytes[8];
data.lorSynPeriod = bytes[9];
data.lorSynFreq =
(bytes[10] << 24) | (bytes[11] << 16) | (bytes[12] << 8) | bytes[13];
data.lorSynDr = bytes[14];
data.heartbeatPeriod = ((bytes[15] << 8) & 0xff00) | (bytes[16] & 0xff);
data.messageId = ((bytes[17] << 8) & 0xff00) | (bytes[18] & 0xff);
return data;
}
// type: 0x2 Heartbeat
function decodeHeartbeat(bytes) {
var data = {};
data.type = "HeartbeatMessage";
data.deviceState =
(bytes[1] << 24) | (bytes[2] << 16) | (bytes[3] << 8) | bytes[4];
data.powerVol = bytes[5];
data.powerPersent = bytes[6];
data.uwbRangeCount = bytes[7];
data.bleOnCount = bytes[8];
data.gnssOnCount = bytes[9];
data.temperature = ((bytes[10] << 8) & 0xff00) | (bytes[11] & 0xff);
data.movementTime = ((bytes[12] << 8) & 0xff00) | (bytes[13] & 0xff);
data.wearTime = ((bytes[14] << 8) & 0xff00) | (bytes[15] & 0xff);
data.chargeTime = ((bytes[16] << 8) & 0xff00) | (bytes[17] & 0xff);
data.messageId = ((bytes[18] << 8) & 0xff00) | (bytes[19] & 0xff);
return data;
}
// type: 0x03 GNSSPosition
function decodeGNSSPosition(bytes) {
var data = {};
data.type = "GNSSPosition";
data.gnssState =
(bytes[0] & 0x01) === 0 ? "GNSS location success" : "GNSS location
failed
";
// longitude
let longitude =
(bytes[1] << 24) | (bytes[2] << 16) | (bytes[3] << 8) | bytes[4];
data.longitude = hex2float(longitude);
// latitude
let latitude =
(bytes[5] << 24) | (bytes[6] << 16) | (bytes[7] << 8) | bytes[8];
data.latitude = hex2float(latitude);
// time
let time =
(bytes[9] << 24) | (bytes[10] << 16) | (bytes[11] << 8) | bytes[12];
data.time = timestampToTime((time + 8 * 60 * 60) * 1000);
// wearState
data.wearState = bytes[13] === 0 ? "no wear" : "wear";
return data;
}
// type: 0x4 Beacon
function decodeBeacon(bytes) {
var data = {};
data.type = "BeaconMessage";
data.beaconType =
(bytes[0] & 0x01) === 0 ? "PositioningBeacon" : "AssetBeacon";
data.beaconCount = bytes[1] & 0x0f;
for (let i = 0; i < data.beaconCount; i++) {
var index = 2 + 5 * i;
var major = (((bytes[index] << 8) & 0xff00) | (bytes[index + 1] & 0xff))
.toString(16)
.toUpperCase()
.padStart(4, "0");
var minor = (((bytes[index + 2] << 8) & 0xff00) | (bytes[index + 3] &
0xff))
.toString(16)
.toUpperCase()
.padStart(4, "0");
var rssi = bytes[index + 4] - 256 + "dBm";
data["beacon" + (i + 1)] = major + minor;
data["rssi" + (i + 1)] = rssi;
}
// wearState
var wearIndex = data.beaconCount * 5 + 2;
data.wearState = bytes[wearIndex] === 0 ? "no wear" : "wear";
return data;
}
// type: 0x5 Alarm
function decodeAlarm(bytes) {
var data = {};
data.type = "AlarmMessage";
var alarmValue = bytes[1] & 0x0f;
if (alarmValue == 1) {
data.alarm = "SOS";
} else if (alarmValue == 2) {
data.alarm = "Fall";
} else if (alarmValue == 3) {
data.alarm = "Special area";
} else if (alarmValue == 4) {
data.alarm = "Search";
} else if (alarmValue == 5) {
data.alarm = "Magnet remove";
}
return data;
}
// type: 0x6 Single Configuration Parameter
function decodeSingleConfigurationParameter(bytes) {
var data = {};
data.type = "ConfigurationParameterResponse";
var parameter = [];
let byteLength = bytes.length;
var index = 0;
while (index + 1 < byteLength) {
var commandBitField = {};
var parameterType = bytes[index + 1] & 0xff;
commandBitField.parameterType = parameterType;
var commandBitFieldLength = getCommandBitFieldLength(parameterType);
var parameterValue = getParameterValue(bytes, index,
commandBitFieldLength);
commandBitField.parameterValue = parameterValue;
commandBitField.name = getParameterName(parameterType);
commandBitField.parameterDefinition = getParameterDefinition(
parameterType,
parameterValue
);
index = index + commandBitFieldLength;
parameter.push(commandBitField);
}
data.parameter = parameter;
return data;
}
// type: 0x7 Rule Beacon
function decodeRuleBeacon(bytes) {
var data = {};
data.type = "RuleBeaconMessage";
var deviceTypeId = bytes[0] & 0x03;
if (deviceTypeId == 1) {
data.deviceTypeId = "deviceTypeId1";
} else if (deviceTypeId == 2) {
data.deviceTypeId = "deviceTypeId2";
} else if (deviceTypeId == 3) {
data.deviceTypeId = "deviceTypeId3";
}
data.beaconCount = bytes[1] & 0x0f;
for (let i = 0; i < data.beaconCount; i++) {
var index = 2 + 5 * i;
var major = (((bytes[index] << 8) & 0xff00) | (bytes[index + 1] & 0xff))
.toString(16)
.toUpperCase()
.padStart(4, "0");
var minor = (((bytes[index + 2] << 8) & 0xff00) | (bytes[index + 3] &
0xff))
.toString(16)
.toUpperCase()
.padStart(4, "0");
var rssi = bytes[index + 4] - 256 + "dBm";
data["beacon" + (i + 1)] = major + minor;
data["rssi" + (i + 1)] = rssi;
}
// wearState
var wearIndex = data.beaconCount * 5 + 2;
data.wearState = bytes[wearIndex] === 0 ? "no wear" : "wear";
return data;
}
// type: 0x8 Distance
function decodeDistance(bytes) {
var data = {};
data.type = "Distance";
data.uwbBeaconCount = bytes[1] & 0x0f;
// data.uwbBeaconCount = 3;
for (let i = 0; i < data.uwbBeaconCount; i++) {
var index = 2 + 7 * i;
var dev = (((bytes[index] << 8) & 0xff00) | (bytes[index + 1] & 0xff))
.toString(16)
.toUpperCase()
.padStart(4, "0");
var eui = (((bytes[index + 2] << 8) & 0xff00) | (bytes[index + 3] &
0xff))
.toString(16)
.toUpperCase()
.padStart(4, "0");
data["majorminor" + (i + 1)] = dev + eui;
data["distance" + (i + 1)] =
(bytes[index + 4] << 16) | (bytes[index + 5] << 8) | bytes[index + 6];
}
// wearState
var wearIndex = data.uwbBeaconCount * 7 + 2;
data.wearState = bytes[wearIndex] === 0 ? "no wear" : "wear";
return data;
}
// getParameterValue hexString
function getParameterValue(bytes, index, length) {
var hexString = "";
for (var i = 2; i <= length; i++) {
var hex = (bytes[index + i] & 0xff).toString(16).toUpperCase();
hexString += hex.padStart(2, "0");
}
return hexString;
}
// getCommandBitFieldLength
function getCommandBitFieldLength(parameterType) {
let lengths = {
0x00: 3,
0x01: 3,
0x02: 3,
0x03: 3,
0x04: 3,
0x05: 2,
0x06: 2,
0x07: 2,
0x08: 2,
0x0a: 17,
0x0b: 17,
0x0e: 9,
0x1e: 2,
0x1f: 2,
0x20: 2,
0x29: 2,
0x2a: 2,
0x2b: 2,
0x2e: 2,
0x2f: 2,
0x30: 2,
0x31: 2,
};
return lengths[parameterType] ?? 0;
}
// Parameter Name
function getParameterName(parameterType) {
let name = {
0x00: "SoftwareVersion",
0x01: "HBPeriod",
0x02: "BlePositionReportInterval",
0x03: "GNSSPositionReportInterval",
0x04: "AssetBeaconReportInterval",
0x05: "BlePositionReceivingDuration",
0x06: "GNSSPositionReceivingDuration",
0x07: "AssetBleReceivingDuration",
0x08: "FallThreshold",
0x0a: "PosBeaconUUID",
0x0b: "AssetBeaconUUID",
0x0e: "ISMI",
0x1e: "FallDetectionAlarmEnable",
0x1f: "SOSAlarmEnable",
0x20: "PosMode",
0x29: "AssetManagementEnable",
0x2a: "GNSSFailureReportEnable", 0x2b: "AssetBeaconSortEnable",
0x2e: "PowerSwitchEnable",
0x2f: "NetworkStatusCheck",
0x30: "GNSSEnableState",
0x31: "BleEnable",
};
return name[parameterType] ?? "No matching parameter names";
}
// Parameter Definition
function getParameterDefinition(parameterType, parameterValue) {
var val = parseInt(parameterValue, 16);
let name = {
0x00: "SoftwareVersion",
0x01: val * 30 + "s, The interval of the heartbeat message, unit: 30s",
0x02: val * 5 + "s, The interval of Bluetooth position repor, unit: 5s",
0x03: val * 5 + "s, The interval of GNSS position report, unit: 5s",
0x04: val * 5 + "s, The interval of asset beacons report, unit: 5s",
0x05:
val * 1 + "s, The duration of BLE position beacon receiving, unit: 1s",
0x06: val * 5 + "s, The duration of GNSS position receiving, unit: 5s",
0x07: val * 1 + "s, The duration of asset beacon receiving, unit 1s",
0x08:
val / 2 +
"s, The threshold of the fall detection, the unit is 0.5 meters",
0x0a: "PosBeaconUUIDFilter",
0x0b: "AssetBeaconUUIDFilter",
0x0e: "ISMI",
0x1e: val == 0 ? "Disable" : "Enable",
0x1f: val == 0 ? "Disable" : "Enable",
0x20:
val == 0
? "Period Mode"
: val == 1
? " Autonomous Mode"
: "On-demand Mode",
0x29: val == 0 ? "Disable" : "Enable",
0x2a: val == 0 ? "Disable" : "Enable",
0x2b: val == 0 ? "Disable" : "Enable",
0x2e: val == 0 ? "Disable" : "Enable",
0x2f: val == 0 ? "Disable" : "Enable",
0x30: val == 0 ? "Disable" : "Enable",
0x31: val == 0 ? "Disable" : "Enable",
};
return name[parameterType] ?? "No matching parameter names";
}
// Floating point conversion
function hex2float(num) {
var sign = num & 0x80000000 ? -1 : 1;
var exponent = ((num >> 23) & 0xff) - 127;
var mantissa = 1 + (num & 0x7fffff) / 0x7fffff;
return sign * mantissa * Math.pow(2, exponent);
}
function asciiToHex(str) {
var hexString = "";
for (let i = 0; i < str.length; i++) {
var hex = str.charCodeAt(i).toString(16);
hexString += hex.padStart(2, "0");
}
return hexString;
}
function hexStringToByteArray(hexString) {
var byteArray = [];
for (let i = 0; i < hexString.length; i += 2) {
byteArray.push(parseInt(hexString.substr(i, 2), 16));
}
return new Uint8Array(byteArray);
}
function timestampToTime(timestamp) {
const date = new Date(timestamp);
const year = date.getFullYear();
const month = (date.getMonth() + 1).toString().padStart(2, "0");
const day = date.getDate().toString().padStart(2, "0");
const hour = date.getHours().toString().padStart(2, "0");
const minute = date.getMinutes().toString().padStart(2, "0");
const second = date.getSeconds().toString().padStart(2, "0");
return `${year}-${month}-${day} ${hour}:${minute}:${second}`;
}
|
