Module: Toybox.Position

Overview

The Position module provides an interface for location information and positioning sensors.

This module also provides two sets of constants:

  • GEO: Used to specify the Location formatting.

  • QUALITY: Represents the GPS fix quality when the Location information was calculated

Example:

using Toybox.Position;
using Toybox.System;
Position.enableLocationEvents(Position.LOCATION_ONE_SHOT, method(:onPosition));
function onPosition(info) {
    var myLocation = info.position.toDegrees();
    System.println("Latitude: " + myLocation[0]); // e.g. 38.856147
    System.println("Longitude: " + myLocation[1]); // e.g -94.800953
}

Since:

API Level 1.0.0

Classes Under Namespace

Classes: Info, Location

Constant Summary

Constellation

This has been deprecated

This enum may be removed after System 10.

Since:

API Level 1.0.0

Name Value Since Description See Also
CONSTELLATION_GPS 0

API Level 3.2.0

Use the GPS satellite constellation

CONSTELLATION_GLONASS 1

API Level 3.2.0

Use the GLONASS satellite constellation

CONSTELLATION_GALILEO 2

API Level 3.2.0

Use the GALILEO satellite constellation

Configuration

Configuration values for known GNSS configurations

Since:

API Level 3.3.6

Name Value Since Description See Also
CONFIGURATION_GPS 1

API Level 3.3.6

GPS L1

CONFIGURATION_GPS_GLONASS 2

API Level 3.3.6

GPS L1 and GLONASS

CONFIGURATION_GPS_GALILEO 3

API Level 3.3.6

GPS L1 and GALILEO L1

CONFIGURATION_GPS_BEIDOU 4

API Level 3.3.6

GPS L1 and BEIDOU L1

CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1 5

API Level 3.3.6

GPS L1, GLONASS, GALILEO L1, BEIDOU L1

This option is supported by System 6 devices like fenix7 and edge1040

CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1_L5 6

API Level 3.3.6

GPS L1, GPS L5, GLONASS, GALILEO L1A, GALILEO L5, BEIDOU L1, BEIDOU L5

Referred to as Multi-GNSS Multi-band on Edge 1040.

This option is supported by System 6 devices like fenix7 and edge1040

CONFIGURATION_SAT_IQ 255

API Level 3.3.6

AutoGNSS (SatIQ™)

CoordinateFormat

Since:

API Level 1.0.0

Name Value Since Description See Also
GEO_DEG 0

API Level 1.0.0

The decimal degree format: ddd.dddddd (e.g. 38.278652)

  • Decimal Degrees
    • GEO_DM 1

    API Level 1.0.0

    The degrees/decimal minutes format: dddmm.mmm (e.g 38 27.865')

    GEO_DMS 2

    API Level 1.0.0

    degrees/minutes/seconds (DMS) format: ddd mm ss (e.g. 38 27' 8")

    GEO_MGRS 3

    API Level 1.0.0

    Military Grid Reference System, or MGRS (e.g. 4QFJ12345678)

  • Military Grid Reference System

    • Quality

    Since:

    API Level 1.0.0

    Name Value Since Description See Also
    QUALITY_NOT_AVAILABLE 0

    API Level 1.0.0

    GPS is not available

    QUALITY_LAST_KNOWN 1

    API Level 1.0.0

    The Location is based on the last known GPS fix.

    QUALITY_POOR 2

    API Level 1.0.0

    The Location was calculated with a poor GPS fix. Only a 2-D GPS fix is available, likely due to a limited number of tracked satellites.

    QUALITY_USABLE 3

    API Level 1.0.0

    The Location was calculated with a usable GPS fix. A 3-D GPS fix is available, with marginal HDOP (horizontal dilution of precision)

  • Dilution of Precision
    • QUALITY_GOOD 4

    API Level 1.0.0

    The Location was calculated with a good GPS fix. A 3-D GPS fix is available, with good-to-excellent HDOP (horizontal dilution of precision).

  • Dilution of Precision

    • LocationAcquisitionType

    Since:

    API Level 1.0.0

    Name Value Since Description See Also
    LOCATION_ONE_SHOT 0

    API Level 1.0.0

    Enables a one-time Location acquisition

    LOCATION_CONTINUOUS 1

    API Level 1.0.0

    Enables continuous Location tracking

    LOCATION_DISABLE 2

    API Level 1.0.0

    Disables Location tracking

    PositioningMode

    Since:

    API Level 1.0.0

    Name Value Since Description See Also
    POSITIONING_MODE_NORMAL 0

    API Level 3.2.0

    Standard positioning mode used by default for fitness activities

    POSITIONING_MODE_AVIATION 1

    API Level 3.2.0

    Enable special mode for aviation use-cases that require support for higher altitudes.

    Instance Method Summary collapse

    Instance Method Details

    createBoundingBox(locations as Lang.Array<Position.Location>) as [ Position.Location, Position.Location ] or Null

    Create a bounding box from an array of Location objects.

    Parameters:

    Returns:

    • Lang.Array —

      Array of Location objects that specify the bounds of the input array or null if the the input array is empty. The first element describes the top left corner, the second describes the bottom right.

    Since:

    API Level 3.0.3

    enableLocationEvents(options as { :acquisitionType as Position.LocationAcquisitionType, :constellations as Lang.Array<Position.Constellation>, :configuration as Position.Configuration, :mode as Position.PositioningMode } or Position.LocationAcquisitionType, listener as Null or Lang.Method(loc as Position.Info) as Void) as Void

    Request a Location event.

    Using this API requires enabling the Positioning Permission. Only Device Apps and Widgets may use this API.

    Note:

    Passing an options Dictionary is only supported with ConnectIQ 3.2.0 and later.

    Note:

    Passing the :configuration option is only supported with ConnectIQ 3.3.6 or later.

    Note:

    Multitasking: Location events will be disabled when app enters inacitve state, and re-enabled when is active again. These state changes are denoted by calls to AppBase.onActive() and AppBase.onInactive().

    Parameters:

    • options — (Lang.Number, Lang.Dictionary) —

      A LOCATION_* value or Toybox::Lang::Dictionary of options.

      • :acquisitionType — (Lang.Number) —

        A LOCATION_* enum value indicating the position acquisition type to use.

      • :constellations — (Lang.Array) —

        An array of CONSTELLATION_* enum values specifying what constellations to enable. If not provided, CONSTELLATION_GPS will be used by default.

      • :configuration — (Position.Configuration) —

        A CONFIGURATION_* value specifying what configuration to enable. Only available with ConnectIQ 3.3.6 and later.

      • :mode — (Lang.Number) —

        a POSITIONING_MODE_* value specifying the mode to use. If null POSITIONING_MODE_NORMAL will be used by default.

    • listener — (Lang.Method) —

      A reference to a listener method:

      • Called when location updates are received

      • Receives a Position.Info object

    Example:

    using Toybox.Position;

var options = {
    :acquisitionType => Position.LOCATION_CONTINUOUS
};

if (Position has :POSITIONING_MODE_AVIATION) {
    options[:mode] = Position.POSITIONING_MODE_AVIATION;
}

if (Position has :hasConfigurationSupport) {
    if (Position has :CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1_L5) &&
       (Position.hasConfigurationSupport(Position.CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1_L5)) {
        options[:configuration] = Position.CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1_L5;
    } else if (Position has :CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1) &&
       (Position.hasConfigurationSupport(Position.CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1)) {
        options[:configuration] = Position.CONFIGURATION_GPS_GLONASS_GALILEO_BEIDOU_L1;
    } else if (Position has :CONFIGURATION_GPS) &&
       (Position.hasConfigurationSupport(Position.CONFIGURATION_GPS)) {
        options[:configuration] = Position.CONFIGURATION_GPS;
    }
} else if (Position has :CONSTELLATION_GLONASS) {
    // this can fail with InvalidValueException if combination is not supported by device
    options[:constellations] = [ Position.CONSTELLATION_GPS, Position.CONSTELLATION_GLONASS ];
} else {
    options = Position.LOCATION_CONTINUOUS;
}

// Continuous location updates using selected options
Position.enableLocationEvents(options, method(:onPosition));

function onPosition(info) {
    var myLocation = info.position.toDegrees();
}

    Supported Devices:

    Since:

    API Level 1.0.0

    Throws:

    • (Lang.InvalidValueException) —

      Thrown if :acquisitionType is invalid, if a specific CONSTELLATION_* value is not supported by a device, or if an invalid combination of constellation values are specified.

    getInfo() as Position.Info

    Get the current Position.Info.

    Using this API requires enabling the Positioning Permission. This is useful for retrieving the current position info either on demand or periodically within a Timer.

    Example:

    Get position info once per second

    using Toybox.Position;
using Toybox.System;
using Toybox.Timer;
var dataTimer = new Timer.Timer();
dataTimer.start(method(:timerCallback), 1000, true); // A one-second timer
function timerCallback() {
    var positionInfo = Position.getInfo();
    if (positionInfo has :altitude && positionInfo.altitude != null) {
        var altitude = positionInfo.altitude;
        System.println("Altitude: " + altitude);
    }
}

    Supported Devices:

    Returns:

    Since:

    API Level 1.0.0

    hasConfigurationSupport(config as Position.Configuration) as Lang.Boolean

    Determines if the device supports a requested GPS configuration

    Parameters:

    • config — (Position.Configuration) —

      A CONFIGURATION_* enum value specifying what configuration to enable. Only available with ConnectIQ 3.3.6 and later.

    Supported Devices:

    Since:

    API Level 3.3.6

    parse(string as Lang.String, format as Position.CoordinateFormat) as Position.Location

    Convert a String to a Location object.

    The input String must be in one of the four formats described by the Position.GEO_* constants.

    Parameters:

    Example:

    using Toybox.Position;
using Toybox.System;
var locString = "38.856147, -94.800953";
var myLocation = Position.parse(locString, Position.GEO_DEG);
System.println(myLocation.toRadians()); // [0.678168, -1.654589]

    Returns:

    • Position.Location —

      A Location object representing the position described by the input String

    Since:

    API Level 1.0.0

    Generated Apr 17, 2024 9:40:38 AM