[WIP] Basic scanner output test

blatted/cli/__init__.py

@@ -2,11 +2,12 @@
 
 import click
 
+from ..tools.ble import scanner
 
 
 @click.command()
 def scan():
-    pass
+    scanner.run()
 
 
 @click.group()

blatted/tools/ble/scanner.py

@@ -1,4 +1,24 @@
+import asyncio
 from bleak import BleakScanner
+from bleak.backends.device import BLEDevice
+from bleak.backends.scanner import AdvertisementData
+import bleak.exc
 
-def scanner():
+
+def discover_callback(device: BLEDevice, advertising_data: AdvertisementData):
+    print(f"[{advertising_data.rssi:-4d}] {device.address} - {device.name} with {len(advertising_data.service_uuids)} services")
+
+
+async def discover_devices():
+    stop_event = asyncio.Event()
+
+    async with BleakScanner(discover_callback):
+        await stop_event.wait()
+
+
+def run():
     print("scanner called")
+    try:
+        asyncio.run(discover_devices())
+    except bleak.exc.BleakDBusError as exc:
+        print(f"ERROR: {exc}")