Watch swimming app

Hi guys. I'm new to Garmin devices and just install Connect IQ.

I would like to build watch workout app for swimmers.
Key features:

start workout
display timer, distance, lap count, heart rate during workout
save workout

And what is most important. I need to collect all possible sensors data (gyro, accelerometer).
Then when workout is saved, I need to send this data to phone.
What is the best way to achieve this ?

Should I manually listen for all sensors raw data, collect them in array and then transfer to Phone ?
Or there is some ready solutions for that ?
I can see Garmin has something like FIT file.
How does it work ? Is that possible to ask device to collect everything to FIT file, and then just transfer FIT file to Phone ?

Top Replies

jim_m_58 over 3 years ago in reply to Dmytro +1

You can add your own data in a data field using fit contributor

https://developer.garmin.com/connect-iq/api-docs/Toybox/FitContributor.html

Fields are written to the fit file at most every second. Based…

All Replies

jim_m_58 over 3 years ago

To do a recording app, see the record sample in the SDK. It will start recording for a specific sport, after enabling GPS, allow you to save the recording, which in turn gets synced to Garmin connect, either by way of Garmin Connect Mobile on your phone or Garmin Express on your pc/mac.

You can write additional info to the fit by using FitContrib fields. Right now you can't publish an app with gyro data, as that can't be done until the 4.1.1 SDK is published.

Your watch likely has a pool swim app, so you probably want to look at that. and may have a native open swim app.

flocsy🤠 over 3 years ago

Maybe before starting to learn how to code in Monkey C get familiar to your new device, do some workouts and see how it look sin Garmin Connect. To me it sounds that the data you need (and probably more) is readily available. Maybe you'll need to add a datafield so it also records another data to the activity's fit file.

Dmytro over 3 years ago in reply to flocsy🤠

This is quite good thought. Thanks.

Indeed FIT file from Garmin Connect looks good.
It consist everything I need except Accelerometer data.
Is it possible to add accelerometer data to this fit file ?
Do I need to write my custom app for this ?
If yes, how can I get same fit file in my app and just add accelerometer data ?

jim_m_58 over 3 years ago in reply to Dmytro

You can add your own data in a data field using fit contributor

https://developer.garmin.com/connect-iq/api-docs/Toybox/FitContributor.html

Fields are written to the fit file at most every second. Based on your device you may want to check if a CIQ data field can be added to the swim activity. Sometimes this is restricted based on the activity.

flocsy🤠 over 3 years ago in reply to Dmytro

Not sure if it's possible, look here: forums.garmin.com/.../how-to-get-accelerometer-from-data-field

Dmytro over 3 years ago in reply to jim_m_58

Thanks.

jim_m_58 said:
Based on your device you may want to check if a CIQ data field can be added to the swim activity

How to do that ? Thanks

jim_m_58 said:
You can add your own data in a data field using fit contributor

Thanks. I will check that.
Also found this thread:
https://forums.garmin.com/developer/connect-iq/f/discussion/6557/how-to-write-raw-accelerometer-data-in-a-fit-file/43664#43664

It's says SensorLogging write accelerometer data to FIT file. Is that true and can be used as well ?

jim_m_58 over 3 years ago in reply to Dmytro

Dmytro said:
How to do that ? Thanks

Download any data field from the app store and see if you can use it on a data screen in the swim activity.