ST STM32Cube Quick Start Manual page 22

Objects distances
The presence is identified inside a fixed range distances that can be modified by these line code:
#define PRESENCE_MIN_DISTANCE_RANGE 300
#define PRESENCE_MAX_DISTANCE_RANGE 800
in the file FLIGHT1_config.h that can find in the Inc users folder for each project.
ST BLE Sensor Application for Android/iOS (2/6)
Presence Detection
NOTE
Demo Examples
Rssi & Battery
22