Access and share logs from GnssLogger for Wear OS

GnssLogger for Wear OS v1.0 extends the GnssLogger app from smartphones to watches.

With GnssLogger for Wear OS, you can display real-time GnssStatus information from the GNSS chipset and log to the de facto standard CSV (.txt) and industry standard RINEX file formats.

GnssLogger for Wear OS
Figure 1. GnssLogger for Wear OS

Share logs from GnssLogger for Wear OS

  1. If you haven't already, install GnssLogger on your phone.
  2. On your watch, tap Stop Log.

Instead of immediately prompting you with sharing options, GnssLogger for Wear OS shows you the following message:

Message on watch when starting to log
Figure 2. Message on watch when starting to log
  1. On your phone, open GnssLogger and then open the Log tab.
  2. Tap the Download & Delete Watch Log Files button.
Download & Delete Watch Log Files button
Figure 3. Download & Delete Watch Log Files button

GnssLogger displays the following message: "Preparing your file. Please wait…":

Preparing your file message
Figure 4. Preparing your file message

Depending on the size of the logs on your watch, this might take a while.

After the file is transferred from your watch to your phone, you'll see a Share dialog where you can share the files from your watch.

A dialog showing sharing options
Figure 5. Share dialog

For example, if you choose to share using email, you'll see an attached zip file containing your watch log files:

Email with attached zip file
Figure 6. Email with attached zip file

Use Android Studio or ADB

If you don't have the watch paired with a phone, you can use Android Studio's Device Explorer to access the device.

Within Android Studio Device Explorer, check out the path /sdcard/Android/data/com.google.android.apps.location.gps.gnsslogger/files/gnss_log to find the log files (.txt file for the GnssLogger log format), and the .24o file for RINEX:

Android Studio Device Explorer showing log files
Figure 7. Android Studio Device Explorer

You can select the files, right-click, and then select "Save To…" to save them directly to your computer:

Dialog to save files to computer
Figure 8. Save To dialog

If you don't want to install Android Studio on your computer, you can also use ADB to pull the files from this directory to your computer: adb pull /sdcard/Android/data/com.google.android.apps.location.gps.gnsslogger/files/gnss_log

Pro tip: You can also use these two methods (Android Studio and ADB) to retrieve GnssLogger files from phones.

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