How to customize a FIT file ?

Hello everyone,

I would like to completely customize the output FIT file of my custom activity.

Does anyone have sample code on how to do this? I'm having trouble understanding the createField() documentation : for example I would only like heart rate and stress level in it.

Thanks in advance

0 jim_m_58 5 months ago

With fitContrib, you can add your own fields, but you can't replace what the firmware records, Based on the sport/subsport, Garmin Connect may not show all the fields

0 4877300 5 months ago in reply to jim_m_58

I put sport and sub-sport to generic, are there still fields defined by default ?

0 jim_m_58 5 months ago in reply to 4877300

Yes. And understand your fitContrib fields show up differently and don't replace the native ones in Garmin Connect.

0 4877300 5 months ago

I tried this as an example :

session.start();

var test = session.createField("test", 0, Toybox.FitContributor.DATA_TYPE_UINT32,{:mesgType=>Toybox.FitContributor.MESG_TYPE_SESSION});

test.setData(4789);

but I don't find it in the associated FIT file, while ?

0 jim_m_58 5 months ago in reply to 4877300

Session data is only in the fit file one time. After you stop and save the session,

0 4877300 5 months ago in reply to jim_m_58

I stopped and saved after but when I try to find it in the csv file it doesn't appear

0 4877300 5 months ago in reply to 4877300

do I need to put something like this ?

 <strings>
        <string id="namaste_label">Namastes</string>
        <string id="namaste_graph_label">Namastes</string>
        <string id="namaste_units">N(s)</string>
    </strings>
    <fitContributions>
        <fitField id="0" displayInChart="true" sortOrder = "0" precision="2"
        chartTitle="@Strings.namaste_graph_label" dataLabel="@Strings.namaste_label"
        unitLabel="@Strings.namaste_units" fillColor="#FF0000" />
    </fitContributions>

0 jim_m_58 5 months ago in reply to 4877300

No, that's only used if you look at it with garmin connects and have installed it from the app store