Fix ISO packet issues

bumble/hci.py

@@ -1986,6 +1986,9 @@ def from_bytes(packet: bytes) -> HCI_Packet:
         if packet_type == HCI_EVENT_PACKET:
             return HCI_Event.from_bytes(packet)
 
+        if packet_type == HCI_ISO_DATA_PACKET:
+            return HCI_IsoDataPacket.from_bytes(packet)
+
         return HCI_CustomPacket(packet)
 
     def __init__(self, name):
@@ -6098,7 +6101,7 @@ def from_bytes(packet: bytes) -> HCI_IsoDataPacket:
         if ts_flag:
             if not should_include_sdu_info:
                 logger.warn(f'Timestamp included when pb_flag={bin(pb_flag)}')
-            time_stamp, _ = struct.unpack_from('<I', packet, pos)
+            time_stamp, *_ = struct.unpack_from('<I', packet, pos)
             pos += 4
 
         if should_include_sdu_info:
@@ -6165,7 +6168,7 @@ def to_bytes(self) -> bytes:
                 self.packet_sequence_number,
                 self.iso_sdu_length | self.packet_status_flag << 14,
             ]
-        return struct.pack(fmt, args) + self.iso_sdu_fragment
+        return struct.pack(fmt, *args) + self.iso_sdu_fragment
 
     def __str__(self) -> str:
         return (

bumble/transport/common.py

@@ -42,6 +42,7 @@
     hci.HCI_ACL_DATA_PACKET: (2, 2, 'H'),
     hci.HCI_SYNCHRONOUS_DATA_PACKET: (1, 2, 'B'),
     hci.HCI_EVENT_PACKET: (1, 1, 'B'),
+    hci.HCI_ISO_DATA_PACKET: (2, 2, 'H'),
 }
 
 

tests/hci_test.py

@@ -32,6 +32,7 @@
     HCI_CustomPacket,
     HCI_Disconnect_Command,
     HCI_Event,
+    HCI_IsoDataPacket,
     HCI_LE_Add_Device_To_Filter_Accept_List_Command,
     HCI_LE_Advertising_Report_Event,
     HCI_LE_Channel_Selection_Algorithm_Event,
@@ -486,6 +487,29 @@ def test_custom():
     assert packet.payload == data
 
 
+# -----------------------------------------------------------------------------
+def test_iso_data_packet():
+    data = bytes.fromhex(
+        '05616044002ac9f0a193003c00e83b477b00eba8d41dc018bf1a980f0290afe1e7c37652096697'
+        '52b6a535a8df61e22931ef5a36281bc77ed6a3206d984bcdabee6be831c699cb50e2'
+    )
+    packet = HCI_IsoDataPacket.from_bytes(data)
+    assert packet.connection_handle == 0x0061
+    assert packet.packet_status_flag == 0
+    assert packet.pb_flag == 0x02
+    assert packet.ts_flag == 0x01
+    assert packet.data_total_length == 68
+    assert packet.time_stamp == 2716911914
+    assert packet.packet_sequence_number == 147
+    assert packet.iso_sdu_length == 60
+    assert packet.iso_sdu_fragment == bytes.fromhex(
+        'e83b477b00eba8d41dc018bf1a980f0290afe1e7c3765209669752b6a535a8df61e22931ef5a3'
+        '6281bc77ed6a3206d984bcdabee6be831c699cb50e2'
+    )
+
+    assert packet.to_bytes() == data
+
+
 # -----------------------------------------------------------------------------
 def run_test_events():
     test_HCI_Event()
@@ -524,6 +548,7 @@ def run_test_commands():
     test_HCI_LE_Set_Default_PHY_Command()
     test_HCI_LE_Set_Extended_Scan_Parameters_Command()
     test_HCI_LE_Set_Extended_Advertising_Enable_Command()
+    test_HCI_LE_Setup_ISO_Data_Path_Command()
 
 
 # -----------------------------------------------------------------------------
@@ -532,3 +557,4 @@ def run_test_commands():
     run_test_commands()
     test_address()
     test_custom()
+    test_iso_data_packet()