GPS device 0 tells EpochField to get its GPS data from a serial port. COM3 is the port from which to read the data. This will be whatever COM port your GPS device is using. If you get the port wrong, EpochField will attempt to find the correct port. If it fails to find the port, the app will notify you.
Once connected to the GPS device, if the device is functioning correctly, you will see EpochField using the data it gets from the device. If it is not working correctly, see “Using the Correct GPS Data” below.
GPS Data Via Your Device’s Location Manager (Android or iOS)
On Android or iOS, you can have the external GPS take over your device’s location manager. Once you have accomplished this, there is no need to configure EpochField, as it will already be using your device’s location manager by default.
Using the above example of a Bluetooth GPS device, once you have paired the external GPS with the device running EpochField, you will need to download an app that allows you to “mock” GPS with an external device. On Android, the “Bluetooth GNSS” app is an option, but there are many others available.
Assuming we are using Bluetooth GNSS, open Settings on your device and enable Developer Options; from there, change ‘Set Mock Location App’ to “Bluetooth GNSS”. Open the Bluetooth GNSS app, select your external device as the target, and hit Connect. You should soon see data coming in from the device. If you do not, see “Using the Correct GPS Data” below.