Use python to measure RSSi of nearby devices on Raspberry Pi 4

Question

I want to discover and measure the RSSI value of nearby Bluetooth devices and map them into a live data visualisation on my RaspberryPi 4.

I have found this python piece of code on stack which scans for Bluetooth devices for 60s and returns their MAC adress and RSSI value one time.

from datetime import datetime
from pathlib import Path
import pydbus
from gi.repository import GLib

discovery_time = 60
log_file = Path('/home/pi/device.log')


def write_to_log(address, rssi):
    """Write device and rssi values to a log file"""
    now = datetime.now()
    current_time = now.strftime('%H:%M:%S')
    with log_file.open('a') as dev_log:
        dev_log.write(f'Device seen[{current_time}]: {address} @ {rssi} dBm\n')

bus = pydbus.SystemBus()
mainloop = GLib.MainLoop()

class DeviceMonitor:
    """Class to represent remote bluetooth devices discovered"""
    def __init__(self, path_obj):
        self.device = bus.get('org.bluez', path_obj)
        self.device.onPropertiesChanged = self.prop_changed
        rssi = self.device.GetAll('org.bluez.Device1').get('RSSI')
        if rssi:
            print(f'Device added to monitor {self.device.Address} @ {rssi} dBm')
        else:
            print(f'Device added to monitor {self.device.Address}')

    def prop_changed(self, iface, props_changed, props_removed):
        """method to be called when a property value on a device changes"""
        rssi = props_changed.get('RSSI', None)
        if rssi is not None:
            print(f'\tDevice Seen: {self.device.Address} @ {rssi} dBm')
            write_to_log(self.device.Address, rssi)


def end_discovery():
    """method called at the end of discovery scan"""
    mainloop.quit()
    adapter.StopDiscovery()

def new_iface(path, iface_props):
    """If a new dbus interfaces is a device, add it to be  monitored"""
    device_addr = iface_props.get('org.bluez.Device1', {}).get('Address')
    if device_addr:
        DeviceMonitor(path)

# BlueZ object manager
mngr = bus.get('org.bluez', '/')
mngr.onInterfacesAdded = new_iface

# Connect to the DBus api for the Bluetooth adapter
adapter = bus.get('org.bluez', '/org/bluez/hci0')
adapter.DuplicateData = False

# Iterate around already known devices and add to monitor
print('Adding already known device to monitor...')
mng_objs = mngr.GetManagedObjects()
for path in mng_objs:
    device = mng_objs[path].get('org.bluez.Device1', {}).get('Address', [])
    if device:
        DeviceMonitor(path)

# Run discovery for discovery_time
adapter.StartDiscovery()
GLib.timeout_add_seconds(discovery_time, end_discovery)
print('Finding nearby devices...')
try:
    mainloop.run()
except KeyboardInterrupt:
    end_discovery()

I would like to alter this code so that:

• it scans indefinitely
• it stores each single MAC address into a name (device 1, device 2, etc.) and updates their RSSI value.
• I can maybe use these variable into a visualization software in the terminal? (similar to wavemon for Wi-Fi RSSI)

I am new to Python and Pydbus so any hint is appreciated! have a good day :)