Geo-Fencing Use-case

For evaluating the Geo-Fencing use case the system is configured as:
- 1 Anchor
- 3 Tags
Flash the four NRF52840 Nordic platforms with dw1000_rtls_arm application as mentioned in README.md.

For dw1000_rtls_arm example, the configuration of the Anchor/Tag will be done using user input terminal as shown below.

To configure the device as Anchor 0 with Mode 0 :

Select Mode Configuration:  0:Mode-0 1:Mode-1 2:Mode-2 3:Mode-3
  0
Select UNIT: 0:TAG 1:ANCHOR
  1
Enter UNIT ID: 0 t0 2
  0

To configure the device as Tag 0 with Mode 0:

Select Mode Configuration:  0:Mode-0 1:Mode-1 2:Mode-2 3:Mode-3
0
Select UNIT: 0:TAG 1:ANCHOR
0
Enter UNIT ID: 0 t0 2
0

To configure the device as Tag 1 with Mode 0 :

Select Mode Configuration:  0:Mode-0 1:Mode-1 2:Mode-2 3:Mode-3
0
Select UNIT: 0:TAG 1:ANCHOR
0
Enter UNIT ID: 0 t0 2
1

To configure the device as Tag 2 with Mode 0 :

Select Mode Configuration:  0:Mode-0 1:Mode-1 2:Mode-2 3:Mode-3
0
Select UNIT: 0:TAG 1:ANCHOR
0
Enter UNIT ID: 0 t0 2
2

Arrangement

Mount the 3 Tags at the same height Note: Differences in heights will result in reduced accuracy of location
Mount the 3 Tags high enough where there is good Line-of-Sight (LOS) with no obstructions between them e.g. mounting 2-3 m high would ensure they are above people’s heads which will help avoid interference.
Mount the 3 Tags to create a triangle
Ensure the antennas are >15 cm away from the nearest wall or any other objects
Connect the PC to the Anchor 0
open a new terminal for pyterm and input
- cd $RIOT_ROOT/dist/tools/pyterm
- sudo ./pyterm -p /dev/ttyACM0
Power the other 3 Tags

The application outputs ranging and some debug information on pyterm. Below Figure shows the example output from Anchor 0 as viewed on pyterm.