Hi everyone !
I have a question about the locations.fit file
Can I read and write this file with the SDK ?
I need to add the POIs contained in GPX files.
I know how to get the wpt list from a gpx files, and now I wan't to write this list of wpt in the locations.fit file ?
Where I can find some help about the structure of the locations.fit
May be there is an other solution ?
Thank you for your help.
Hi Daksol,
I'm using C# SDK to read and write .fit files for my Germin Edge 1000.
Here ist the field definition for a waypoint message:
public sealed class FieldDefNum
{
public const byte MessageIndex = 254;
public const byte Name = 0;
public const byte PositionLat = 1;
public const byte PositionLong = 2;
public const byte WayPointDetails = 6;
public const byte Timestamp = 253;
public const byte WayPointSymbol = 3;
public const byte Altitude = 4;
public const byte Invalid = Fit.FieldNumInvalid;
}
And you are right. Byte 3 represents the waypoint symbol and byte 4 is used for altitude. Your value 2499 looks a little bit strange. May be, you read it as an interger value, but Garmin stores altitude values as float values.
///<summary>
/// Retrieves the Altitude field
/// Units: m
/// Comment: Altitude at the described WayPoint</summary>
/// <returns>Returns nullable float representing the Altitude field</returns>
public float? GetAltitude()
{
Object val = GetFieldValue(4, 0, Fit.SubfieldIndexMainField);
if (val == null)
{
return null;
}
return (Convert.ToSingle(val));
}
How to get a list of possible values for symbols?
Try to edit the symbol of an existing position inside your Edge 810 and you get a list of possible values:
Change the symbol and read locations.fit again :-)
Hope this helps alittle bit.
