Vehicle.cc

        qgcApp()->showMessage(QStringLiteral("Pause not supported by vehicle."));
        return;
    }
    _firmwarePlugin->pauseVehicle(this);
}

void Vehicle::abortLanding(double climbOutAltitude)
{
    sendMavCommand(defaultComponentId(),
                   MAV_CMD_DO_GO_AROUND,
                   true,        // show error if fails
                   climbOutAltitude);
}

bool Vehicle::guidedMode(void) const
{
    return _firmwarePlugin->isGuidedMode(this);
}

void Vehicle::setGuidedMode(bool guidedMode)
{
    return _firmwarePlugin->setGuidedMode(this, guidedMode);
}

void Vehicle::emergencyStop(void)
{
    sendMavCommand(_defaultComponentId,
                   MAV_CMD_COMPONENT_ARM_DISARM,
                   true,        // show error if fails
                   0.0f,
                   21196.0f);  // Magic number for emergency stop
}

void Vehicle::setCurrentMissionSequence(int seq)
{
    if (!_firmwarePlugin->sendHomePositionToVehicle()) {
        seq--;
    }
    mavlink_message_t msg;
    mavlink_msg_mission_set_current_pack_chan(_mavlink->getSystemId(),
                                              _mavlink->getComponentId(),
                                              priorityLink()->mavlinkChannel(),
                                              &msg,
                                              id(),
                                              _compID,
                                              seq);
    sendMessageOnLink(priorityLink(), msg);
}

void Vehicle::sendMavCommand(int component, MAV_CMD command, bool showError, float param1, float param2, float param3, float param4, float param5, float param6, float param7)
{
    MavCommandQueueEntry_t entry;

    entry.component = component;
    entry.command = command;
    entry.showError = showError;
    entry.rgParam[0] = param1;
    entry.rgParam[1] = param2;
    entry.rgParam[2] = param3;
    entry.rgParam[3] = param4;
    entry.rgParam[4] = param5;
    entry.rgParam[5] = param6;
    entry.rgParam[6] = param7;

    _mavCommandQueue.append(entry);

    if (_mavCommandQueue.count() == 1) {
        _mavCommandRetryCount = 0;
        _sendMavCommandAgain();
    }
}

void Vehicle::_sendMavCommandAgain(void)
{
    if(!_mavCommandQueue.size()) {
        qWarning() << "Command resend with no commands in queue";
        _mavCommandAckTimer.stop();
        return;
    }

    MavCommandQueueEntry_t& queuedCommand = _mavCommandQueue[0];

    if (_mavCommandRetryCount++ > _mavCommandMaxRetryCount) {
        if (queuedCommand.command == MAV_CMD_REQUEST_AUTOPILOT_CAPABILITIES) {
            // We aren't going to get a response back for capabilities, so stop waiting for it before we ask for mission items
            _setCapabilities(0);
            _startPlanRequest();
        }

        emit mavCommandResult(_id, queuedCommand.component, queuedCommand.command, MAV_RESULT_FAILED, true /* noResponsefromVehicle */);
        if (queuedCommand.showError) {
            qgcApp()->showMessage(tr("Vehicle did not respond to command: %1").arg(qgcApp()->toolbox()->missionCommandTree()->friendlyName(queuedCommand.command)));
        }
        _mavCommandQueue.removeFirst();
        _sendNextQueuedMavCommand();
        return;
    }

    if (_mavCommandRetryCount > 1) {
        // We always let AUTOPILOT_CAPABILITIES go through multiple times even if we don't get acks. This is because
        // we really need to get capabilities and version info back over a lossy link.
        if (queuedCommand.command != MAV_CMD_REQUEST_AUTOPILOT_CAPABILITIES) {
            if (px4Firmware()) {
                // Older PX4 firmwares are inconsistent with repect to sending back an Ack from a COMMAND_LONG, hence we can't support retry logic for it.
                if (_firmwareMajorVersion != versionNotSetValue) {
                    // If no version set assume lastest master dev build, so acks are suppored
                    if (_firmwareMajorVersion <= 1 && _firmwareMinorVersion <= 5 && _firmwarePatchVersion <= 3) {
                        // Acks not supported in this version
                        return;
                    }
                }
            } else {
                if (queuedCommand.command == MAV_CMD_START_RX_PAIR) {
                    // The implementation of this command comes from the IO layer and is shared across stacks. So for other firmwares
                    // we aren't really sure whether they are correct or not.
                    return;
                }
            }
        }
        qCDebug(VehicleLog) << "Vehicle::_sendMavCommandAgain retrying command:_mavCommandRetryCount" << queuedCommand.command << _mavCommandRetryCount;
    }

    _mavCommandAckTimer.start();

    mavlink_message_t       msg;
    mavlink_command_long_t  cmd;

    memset(&cmd, 0, sizeof(cmd));
    cmd.command = queuedCommand.command;
    cmd.confirmation = 0;
    cmd.param1 = queuedCommand.rgParam[0];
    cmd.param2 = queuedCommand.rgParam[1];
    cmd.param3 = queuedCommand.rgParam[2];
    cmd.param4 = queuedCommand.rgParam[3];
    cmd.param5 = queuedCommand.rgParam[4];
    cmd.param6 = queuedCommand.rgParam[5];
    cmd.param7 = queuedCommand.rgParam[6];
    cmd.target_system = _id;
    cmd.target_component = queuedCommand.component;
    mavlink_msg_command_long_encode_chan(_mavlink->getSystemId(),
                                         _mavlink->getComponentId(),
                                         priorityLink()->mavlinkChannel(),
                                         &msg,
                                         &cmd);

    sendMessageOnLink(priorityLink(), msg);
}

void Vehicle::_sendNextQueuedMavCommand(void)
{
    if (_mavCommandQueue.count()) {
        _mavCommandRetryCount = 0;
        _sendMavCommandAgain();
    }
}


void Vehicle::setPrearmError(const QString& prearmError)
{
    _prearmError = prearmError;
    emit prearmErrorChanged(_prearmError);
    if (!_prearmError.isEmpty()) {
        _prearmErrorTimer.start();
    }
}

void Vehicle::_prearmErrorTimeout(void)
{
    setPrearmError(QString());
}

void Vehicle::setFirmwareVersion(int majorVersion, int minorVersion, int patchVersion, FIRMWARE_VERSION_TYPE versionType)
{
    _firmwareMajorVersion = majorVersion;
    _firmwareMinorVersion = minorVersion;
    _firmwarePatchVersion = patchVersion;
    _firmwareVersionType = versionType;
    emit firmwareMajorVersionChanged(_firmwareMajorVersion);
    emit firmwareMinorVersionChanged(_firmwareMinorVersion);
    emit firmwarePatchVersionChanged(_firmwarePatchVersion);
    emit firmwareVersionTypeChanged(_firmwareVersionType);
}

QString Vehicle::firmwareVersionTypeString(void) const
{
    switch (_firmwareVersionType) {
    case FIRMWARE_VERSION_TYPE_DEV:
        return QStringLiteral("dev");
    case FIRMWARE_VERSION_TYPE_ALPHA:
        return QStringLiteral("alpha");
    case FIRMWARE_VERSION_TYPE_BETA:
        return QStringLiteral("beta");
    case FIRMWARE_VERSION_TYPE_RC:
        return QStringLiteral("rc");
    case FIRMWARE_VERSION_TYPE_OFFICIAL:
    default:
        return QStringLiteral("");
    }
}

void Vehicle::rebootVehicle()
{
    sendMavCommand(_defaultComponentId, MAV_CMD_PREFLIGHT_REBOOT_SHUTDOWN, true, 1.0f);
}

void Vehicle::setSoloFirmware(bool soloFirmware)
{
    if (soloFirmware != _soloFirmware) {
        _soloFirmware = soloFirmware;
        emit soloFirmwareChanged(soloFirmware);
    }
}

#if 0
    // Temporarily removed, waiting for new command implementation
void Vehicle::motorTest(int motor, int percent, int timeoutSecs)
{
    doCommandLongUnverified(_defaultComponentId, MAV_CMD_DO_MOTOR_TEST, motor, MOTOR_TEST_THROTTLE_PERCENT, percent, timeoutSecs);
}
#endif

QString Vehicle::brandImageIndoor(void) const
{
    return _firmwarePlugin->brandImageIndoor(this);
}

QString Vehicle::brandImageOutdoor(void) const
{
    return _firmwarePlugin->brandImageOutdoor(this);
}

QStringList Vehicle::unhealthySensors(void) const
{
    QStringList sensorList;

    struct sensorInfo_s {
        uint32_t    bit;
        const char* sensorName;
    };

    static const sensorInfo_s rgSensorInfo[] = {
        { MAV_SYS_STATUS_SENSOR_3D_GYRO,                "Gyro" },
        { MAV_SYS_STATUS_SENSOR_3D_ACCEL,               "Accelerometer" },
        { MAV_SYS_STATUS_SENSOR_3D_MAG,                 "Magnetometer" },
        { MAV_SYS_STATUS_SENSOR_ABSOLUTE_PRESSURE,      "Absolute pressure" },
        { MAV_SYS_STATUS_SENSOR_DIFFERENTIAL_PRESSURE,  "Differential pressure" },
        { MAV_SYS_STATUS_SENSOR_GPS,                    "GPS" },
        { MAV_SYS_STATUS_SENSOR_OPTICAL_FLOW,           "Optical flow" },
        { MAV_SYS_STATUS_SENSOR_VISION_POSITION,        "Computer vision position" },
        { MAV_SYS_STATUS_SENSOR_LASER_POSITION,         "Laser based position" },
        { MAV_SYS_STATUS_SENSOR_EXTERNAL_GROUND_TRUTH,  "External ground truth" },
        { MAV_SYS_STATUS_SENSOR_ANGULAR_RATE_CONTROL,   "Angular rate control" },
        { MAV_SYS_STATUS_SENSOR_ATTITUDE_STABILIZATION, "Attitude stabilization" },
        { MAV_SYS_STATUS_SENSOR_YAW_POSITION,           "Yaw position" },
        { MAV_SYS_STATUS_SENSOR_Z_ALTITUDE_CONTROL,     "Z/altitude control" },
        { MAV_SYS_STATUS_SENSOR_XY_POSITION_CONTROL,    "X/Y position control" },
        { MAV_SYS_STATUS_SENSOR_MOTOR_OUTPUTS,          "Motor outputs / control" },
        { MAV_SYS_STATUS_SENSOR_RC_RECEIVER,            "RC receiver" },
        { MAV_SYS_STATUS_SENSOR_3D_GYRO2,               "Gyro 2" },
        { MAV_SYS_STATUS_SENSOR_3D_ACCEL2,              "Accelerometer 2" },
        { MAV_SYS_STATUS_SENSOR_3D_MAG2,                "Magnetometer 2" },
        { MAV_SYS_STATUS_GEOFENCE,                      "GeoFence" },
        { MAV_SYS_STATUS_AHRS,                          "AHRS" },
        { MAV_SYS_STATUS_TERRAIN,                       "Terrain" },
        { MAV_SYS_STATUS_REVERSE_MOTOR,                 "Motors reversed" },
        { MAV_SYS_STATUS_LOGGING,                       "Logging" },
    };

    for (size_t i=0; i<sizeof(rgSensorInfo)/sizeof(sensorInfo_s); i++) {
        const sensorInfo_s* pSensorInfo = &rgSensorInfo[i];
        if ((_onboardControlSensorsEnabled & pSensorInfo->bit) && !(_onboardControlSensorsHealth & pSensorInfo->bit)) {
            sensorList << pSensorInfo->sensorName;
        }
    }

    return sensorList;
}

void Vehicle::setOfflineEditingDefaultComponentId(int defaultComponentId)
{
    if (_offlineEditingVehicle) {
        _defaultComponentId = defaultComponentId;
    } else {
        qWarning() << "Call to Vehicle::setOfflineEditingDefaultComponentId on vehicle which is not offline";
    }
}

void Vehicle::triggerCamera(void)
{
    sendMavCommand(_defaultComponentId,
                   MAV_CMD_DO_DIGICAM_CONTROL,
                   true,                            // show errors
                   0.0, 0.0, 0.0, 0.0,              // param 1-4 unused
                   1.0);                            // trigger camera
}

const char* VehicleGPSFactGroup::_hdopFactName =                "hdop";
const char* VehicleGPSFactGroup::_vdopFactName =                "vdop";
const char* VehicleGPSFactGroup::_courseOverGroundFactName =    "courseOverGround";
const char* VehicleGPSFactGroup::_countFactName =               "count";
const char* VehicleGPSFactGroup::_lockFactName =                "lock";

VehicleGPSFactGroup::VehicleGPSFactGroup(QObject* parent)
    : FactGroup(1000, ":/json/Vehicle/GPSFact.json", parent)
    , _hdopFact             (0, _hdopFactName,              FactMetaData::valueTypeDouble)
    , _vdopFact             (0, _vdopFactName,              FactMetaData::valueTypeDouble)
    , _courseOverGroundFact (0, _courseOverGroundFactName,  FactMetaData::valueTypeDouble)
    , _countFact            (0, _countFactName,             FactMetaData::valueTypeInt32)
    , _lockFact             (0, _lockFactName,              FactMetaData::valueTypeInt32)
{
    _addFact(&_hdopFact,                _hdopFactName);
    _addFact(&_vdopFact,                _vdopFactName);
    _addFact(&_courseOverGroundFact,    _courseOverGroundFactName);
    _addFact(&_lockFact,                _lockFactName);
    _addFact(&_countFact,               _countFactName);

    _hdopFact.setRawValue(std::numeric_limits<float>::quiet_NaN());
    _vdopFact.setRawValue(std::numeric_limits<float>::quiet_NaN());
    _courseOverGroundFact.setRawValue(std::numeric_limits<float>::quiet_NaN());
}

void Vehicle::startMavlinkLog()
{
    sendMavCommand(_defaultComponentId, MAV_CMD_LOGGING_START, false /* showError */);
}

void Vehicle::stopMavlinkLog()
{
    sendMavCommand(_defaultComponentId, MAV_CMD_LOGGING_STOP, false /* showError */);
}

void Vehicle::_ackMavlinkLogData(uint16_t sequence)
{
    mavlink_message_t msg;
    mavlink_logging_ack_t ack;
    memset(&ack, 0, sizeof(ack));
    ack.sequence = sequence;
    ack.target_component = _defaultComponentId;
    ack.target_system = id();
    mavlink_msg_logging_ack_encode_chan(
        _mavlink->getSystemId(),
        _mavlink->getComponentId(),
        priorityLink()->mavlinkChannel(),
        &msg,
        &ack);
    sendMessageOnLink(priorityLink(), msg);
}

void Vehicle::_handleMavlinkLoggingData(mavlink_message_t& message)
{
    mavlink_logging_data_t log;
    mavlink_msg_logging_data_decode(&message, &log);
    emit mavlinkLogData(this, log.target_system, log.target_component, log.sequence,
        log.first_message_offset, QByteArray((const char*)log.data, log.length), false);
}

void Vehicle::_handleMavlinkLoggingDataAcked(mavlink_message_t& message)
{
    mavlink_logging_data_acked_t log;
    mavlink_msg_logging_data_acked_decode(&message, &log);
    _ackMavlinkLogData(log.sequence);
    emit mavlinkLogData(this, log.target_system, log.target_component, log.sequence,
        log.first_message_offset, QByteArray((const char*)log.data, log.length), true);
}

void Vehicle::setFirmwarePluginInstanceData(QObject* firmwarePluginInstanceData)
{
    firmwarePluginInstanceData->setParent(this);
    _firmwarePluginInstanceData = firmwarePluginInstanceData;
}

QString Vehicle::missionFlightMode(void) const
{
    return _firmwarePlugin->missionFlightMode();
}

QString Vehicle::pauseFlightMode(void) const
{
    return _firmwarePlugin->pauseFlightMode();
}

QString Vehicle::rtlFlightMode(void) const
{
    return _firmwarePlugin->rtlFlightMode();
}

QString Vehicle::landFlightMode(void) const
{
    return _firmwarePlugin->landFlightMode();
}

QString Vehicle::takeControlFlightMode(void) const
{
    return _firmwarePlugin->takeControlFlightMode();
}

QString Vehicle::vehicleImageOpaque() const
{
    if(_firmwarePlugin)
        return _firmwarePlugin->vehicleImageOpaque(this);
    else
        return QString();
}

QString Vehicle::vehicleImageOutline() const
{
    if(_firmwarePlugin)
        return _firmwarePlugin->vehicleImageOutline(this);
    else
        return QString();
}

QString Vehicle::vehicleImageCompass() const
{
    if(_firmwarePlugin)
        return _firmwarePlugin->vehicleImageCompass(this);
    else
        return QString();
}

const QVariantList& Vehicle::toolBarIndicators()
{
    if(_firmwarePlugin) {
        return _firmwarePlugin->toolBarIndicators(this);
    }
    static QVariantList emptyList;
    return emptyList;
}

const QVariantList& Vehicle::cameraList(void) const
{
    if (_firmwarePlugin) {
        return _firmwarePlugin->cameraList(this);
    }
    static QVariantList emptyList;
    return emptyList;
}

bool Vehicle::vehicleYawsToNextWaypointInMission(void) const
{
    return _firmwarePlugin->vehicleYawsToNextWaypointInMission(this);
}

void Vehicle::_setupAutoDisarmSignalling(void)
{
    QString param = _firmwarePlugin->autoDisarmParameter(this);

    if (!param.isEmpty() && _parameterManager->parameterExists(FactSystem::defaultComponentId, param)) {
        Fact* fact = _parameterManager->getParameter(FactSystem::defaultComponentId,param);
        connect(fact, &Fact::rawValueChanged, this, &Vehicle::autoDisarmChanged);
        emit autoDisarmChanged();
    }
}

bool Vehicle::autoDisarm(void)
{
    QString param = _firmwarePlugin->autoDisarmParameter(this);

    if (!param.isEmpty() && _parameterManager->parameterExists(FactSystem::defaultComponentId, param)) {
        Fact* fact = _parameterManager->getParameter(FactSystem::defaultComponentId,param);
        return fact->rawValue().toDouble() > 0;
    }

    return false;
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------

const char* VehicleBatteryFactGroup::_voltageFactName =                     "voltage";
const char* VehicleBatteryFactGroup::_percentRemainingFactName =            "percentRemaining";
const char* VehicleBatteryFactGroup::_mahConsumedFactName =                 "mahConsumed";
const char* VehicleBatteryFactGroup::_currentFactName =                     "current";
const char* VehicleBatteryFactGroup::_temperatureFactName =                 "temperature";
const char* VehicleBatteryFactGroup::_cellCountFactName =                   "cellCount";

const char* VehicleBatteryFactGroup::_settingsGroup =                       "Vehicle.battery";

const double VehicleBatteryFactGroup::_voltageUnavailable =           -1.0;
const int    VehicleBatteryFactGroup::_percentRemainingUnavailable =  -1;
const int    VehicleBatteryFactGroup::_mahConsumedUnavailable =       -1;
const int    VehicleBatteryFactGroup::_currentUnavailable =           -1;
const double VehicleBatteryFactGroup::_temperatureUnavailable =       -1.0;
const int    VehicleBatteryFactGroup::_cellCountUnavailable =         -1.0;

VehicleBatteryFactGroup::VehicleBatteryFactGroup(QObject* parent)
    : FactGroup(1000, ":/json/Vehicle/BatteryFact.json", parent)
    , _voltageFact                  (0, _voltageFactName,                   FactMetaData::valueTypeDouble)
    , _percentRemainingFact         (0, _percentRemainingFactName,          FactMetaData::valueTypeInt32)
    , _mahConsumedFact              (0, _mahConsumedFactName,               FactMetaData::valueTypeInt32)
    , _currentFact                  (0, _currentFactName,                   FactMetaData::valueTypeFloat)
    , _temperatureFact              (0, _temperatureFactName,               FactMetaData::valueTypeDouble)
    , _cellCountFact                (0, _cellCountFactName,                 FactMetaData::valueTypeInt32)
{
    _addFact(&_voltageFact,                 _voltageFactName);
    _addFact(&_percentRemainingFact,        _percentRemainingFactName);
    _addFact(&_mahConsumedFact,             _mahConsumedFactName);
    _addFact(&_currentFact,                 _currentFactName);
    _addFact(&_temperatureFact,             _temperatureFactName);
    _addFact(&_cellCountFact,               _cellCountFactName);

    // Start out as not available
    _voltageFact.setRawValue            (_voltageUnavailable);
    _percentRemainingFact.setRawValue   (_percentRemainingUnavailable);
    _mahConsumedFact.setRawValue        (_mahConsumedUnavailable);
    _currentFact.setRawValue            (_currentUnavailable);
    _temperatureFact.setRawValue        (_temperatureUnavailable);
    _cellCountFact.setRawValue          (_cellCountUnavailable);
}

const char* VehicleWindFactGroup::_directionFactName =      "direction";
const char* VehicleWindFactGroup::_speedFactName =          "speed";
const char* VehicleWindFactGroup::_verticalSpeedFactName =  "verticalSpeed";

VehicleWindFactGroup::VehicleWindFactGroup(QObject* parent)
    : FactGroup(1000, ":/json/Vehicle/WindFact.json", parent)
    , _directionFact    (0, _directionFactName,     FactMetaData::valueTypeDouble)
    , _speedFact        (0, _speedFactName,         FactMetaData::valueTypeDouble)
    , _verticalSpeedFact(0, _verticalSpeedFactName, FactMetaData::valueTypeDouble)
{
    _addFact(&_directionFact,       _directionFactName);
    _addFact(&_speedFact,           _speedFactName);
    _addFact(&_verticalSpeedFact,   _verticalSpeedFactName);

    // Start out as not available "--.--"
    _directionFact.setRawValue      (std::numeric_limits<float>::quiet_NaN());
    _speedFact.setRawValue          (std::numeric_limits<float>::quiet_NaN());
    _verticalSpeedFact.setRawValue  (std::numeric_limits<float>::quiet_NaN());
}

const char* VehicleVibrationFactGroup::_xAxisFactName =      "xAxis";
const char* VehicleVibrationFactGroup::_yAxisFactName =      "yAxis";
const char* VehicleVibrationFactGroup::_zAxisFactName =      "zAxis";
const char* VehicleVibrationFactGroup::_clipCount1FactName = "clipCount1";
const char* VehicleVibrationFactGroup::_clipCount2FactName = "clipCount2";
const char* VehicleVibrationFactGroup::_clipCount3FactName = "clipCount3";

VehicleVibrationFactGroup::VehicleVibrationFactGroup(QObject* parent)
    : FactGroup(1000, ":/json/Vehicle/VibrationFact.json", parent)
    , _xAxisFact        (0, _xAxisFactName,         FactMetaData::valueTypeDouble)
    , _yAxisFact        (0, _yAxisFactName,         FactMetaData::valueTypeDouble)
    , _zAxisFact        (0, _zAxisFactName,         FactMetaData::valueTypeDouble)
    , _clipCount1Fact   (0, _clipCount1FactName,    FactMetaData::valueTypeUint32)
    , _clipCount2Fact   (0, _clipCount2FactName,    FactMetaData::valueTypeUint32)
    , _clipCount3Fact   (0, _clipCount3FactName,    FactMetaData::valueTypeUint32)
{
    _addFact(&_xAxisFact,       _xAxisFactName);
    _addFact(&_yAxisFact,       _yAxisFactName);
    _addFact(&_zAxisFact,       _zAxisFactName);
    _addFact(&_clipCount1Fact,  _clipCount1FactName);
    _addFact(&_clipCount2Fact,  _clipCount2FactName);
    _addFact(&_clipCount3Fact,  _clipCount3FactName);

    // Start out as not available "--.--"
    _xAxisFact.setRawValue(std::numeric_limits<float>::quiet_NaN());
    _yAxisFact.setRawValue(std::numeric_limits<float>::quiet_NaN());
    _zAxisFact.setRawValue(std::numeric_limits<float>::quiet_NaN());
}


const char* VehicleTemperatureFactGroup::_temperature1FactName =      "temperature1";
const char* VehicleTemperatureFactGroup::_temperature2FactName =      "temperature2";
const char* VehicleTemperatureFactGroup::_temperature3FactName =      "temperature3";

VehicleTemperatureFactGroup::VehicleTemperatureFactGroup(QObject* parent)
    : FactGroup(1000, ":/json/Vehicle/TemperatureFact.json", parent)
    , _temperature1Fact    (0, _temperature1FactName,     FactMetaData::valueTypeDouble)
    , _temperature2Fact    (0, _temperature2FactName,     FactMetaData::valueTypeDouble)
    , _temperature3Fact    (0, _temperature3FactName,     FactMetaData::valueTypeDouble)
{
    _addFact(&_temperature1Fact,       _temperature1FactName);
    _addFact(&_temperature2Fact,       _temperature2FactName);
    _addFact(&_temperature3Fact,       _temperature3FactName);

    // Start out as not available "--.--"
    _temperature1Fact.setRawValue      (std::numeric_limits<float>::quiet_NaN());
    _temperature2Fact.setRawValue      (std::numeric_limits<float>::quiet_NaN());
    _temperature3Fact.setRawValue      (std::numeric_limits<float>::quiet_NaN());
}