Use predefined service uuids

On macos the service_uuids need to be filled. Main issue for beginners is to retrieve some valid uuids. Instead of using an external tool like nRF we could use predefined ones in bleak/uuids. Implementation works with 128bit and 16bit UUIDs. Related-to #635 Signed-off-by: Marc Koderer <[email protected]>
hbldh · Dec 30, 2021 · 2ff8d7b · 2ff8d7b
1 parent b644ae2
commit 2ff8d7b
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/examples/detection_callback.py b/examples/detection_callback.py
@@ -15,6 +15,7 @@
 from bleak import BleakScanner
 from bleak.backends.device import BLEDevice
 from bleak.backends.scanner import AdvertisementData
+from bleak.uuids import uuid16_dict, uuid128_dict
 
 logger = logging.getLogger(__name__)
 
@@ -24,6 +25,16 @@ def simple_callback(device: BLEDevice, advertisement_data: AdvertisementData):
 
 
 async def main(service_uuids):
+ if len(service_uuids) > 0 and service_uuids[0] == "all":
+ # in Macos Monterey the service_uuids need to be specified.
+ # Instead of discovering valid uuids with a different tool
+ # you can add `all` as argument and it will add all defined 
+ # uuid's from bleak/uuids as a starting point.
+ logger.info("Adding all known service uuids")
+ service_uuids.pop(0)
+ for item in uuid16_dict:
+ service_uuids.append("{0:04x}".format(item))
+ service_uuids.extend(uuid128_dict.keys())
  scanner = BleakScanner(service_uuids=service_uuids)
  scanner.register_detection_callback(simple_callback)