Configuring presence detection¶

If your measurement device should support presence detection, for each device, after deploying the firmware to the device, you should perform additional steps:

edit the nsv.csv file;
generate the nvs.bin partition file
deploy the nvs.bin partition to a specific measurement device

1. Edit the nvs.csv file¶

The MAC-addresses used for presence detection should be defined in the file nvs.csv;

In a line that starts with mac_addresses,data,string,, one or more Bluetooth MAC-addresses can be defined.
A MAC-address can be written like AB:CD:EF:01:23:45 or AB-CD-EF-01-23-45 and may be upper- or lower-case.
When multiple MAC-addresses are defined, separate them with ; without spaces.
Make sure that the csv-file does not contain any unnecessary spaces.

WARNING: Bluetooth MAC Addresses constitute personal data. NEVER push an nvs.csv file that contains true Bluetooth MAC addresses from (devices of) real persons to a (Public) GitHub respository.

2. Generate the nvs.bin partition file¶

Open a comand prompt in the directory of the nvs.csv file you just edited.
Use the command below to generate the partition:
```
python3 $IDF_PATH/components/nvs_flash/nvs_partition_generator/nvs_partition_gen.py generate nvs.csv nvs.bin 16384
```
> Should you encounter issues you may try to replace py <command> in the above commands with: > > - py <command> > - python <command>

3. Deploy the nvs.bin partition to a specific measurement device¶

Open a comand prompt in the directory of the nvs.bin file you just generated.
Use the command below to generate the partition:
```
python3 -m esptool --chip esp32 --baud 460800 write_flash 0x19000 nvs.bin
```
> Should you encounter issues you may try to replace py -m <command> in the above commands with: > > - py -m <command> > - python -m <command>