Meshtastic BLE device sniffer python

ble_devices.json

[]

ble_sniffer.py

import argparse
import asyncio
import json
import time

from bleak import BleakScanner
SERVICE_UUID = "6ba1b218-15a8-461f-9fa8-5dcae273eafd"

async def main():
    while True:
        f = open("ble_devices.json", "r+")
        jsonDevices = json.load(f)
        f.close()
        devices = await BleakScanner.discover(
            return_adv=True,
            service_uuids=[SERVICE_UUID]
        )
        for d, a in devices.values():
            print(d)
            found = False
            for device in jsonDevices:
                if device['mac'] == d.address:
                    found = True
            if found == False:
                newDevice = {}
                newDevice['mac'] = d.address
                newDevice['name'] = d.name
                newDevice['rssi'] = d.rssi
                jsonDevices.append(newDevice)

        with open("ble_devices.json", "w") as f:        
            json.dump(jsonDevices, f)
        time.sleep(3)

if __name__ ==  '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

ble_sniffer.service

[Unit]
Description=BLE Sniffer
After=multi-user.target
[Service]
Type=simple
Restart=always
User={user}
ExecStart=python /home/{user}/ble_sniffer.py

[Install]
WantedBy=multi-user.target