initial import

web/scanner.py

@@ -0,0 +1,63 @@
+# Copyright 2021-2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# -----------------------------------------------------------------------------
+# Imports
+# -----------------------------------------------------------------------------
+from bumble.device import Device
+from bumble.transport import PacketParser
+
+
+# -----------------------------------------------------------------------------
+class ScannerListener(Device.Listener):
+    def on_advertisement(self, address, ad_data, rssi, connectable):
+        address_type_string = ('P', 'R', 'PI', 'RI')[address.address_type]
+        print(f'>>> {address} [{address_type_string}]: RSSI={rssi}, {ad_data}')
+
+
+class HciSource:
+    def __init__(self, host_source):
+        self.parser = PacketParser()
+        host_source.delegate = self
+
+    def set_packet_sink(self, sink):
+        self.parser.set_packet_sink(sink)
+
+    # host source delegation
+    def data_received(self, data):
+        print('*** DATA from JS:', data)
+        buffer = bytes(data.to_py())
+        self.parser.feed_data(buffer)
+
+
+# class HciSink:
+#     def __init__(self, host_sink):
+#         self.host_sink = host_sink
+
+#     def on_packet(self, packet):
+#         print(f'>>> PACKET from Python: {packet}')
+#         self.host_sink.on_packet(packet)
+
+
+# -----------------------------------------------------------------------------
+async def main(host_source, host_sink):
+    print('### Starting Scanner')
+    hci_source = HciSource(host_source)
+    hci_sink = host_sink
+    device = Device.with_hci('Bumble', 'F0:F1:F2:F3:F4:F5', hci_source, hci_sink)
+    device.listener = ScannerListener()
+    await device.power_on()
+    await device.start_scanning()
+
+    print('### Scanner started')