description="All the audio",
bInterfaceClass=audio.AUDIO_CLASS_DEVICE,
bInterfaceSubClass=audio.AUDIO_SUBCLASS_CONTROL,
bInterfaceProtocol=audio.AUDIO_PROTOCOL_V1,
iInterface=StringIndex.index("CircuitPython Audio"),
subdescriptors=[
cs_ac_interface,
])
# Audio streaming interfaces must occur before MIDI ones.
audio_interfaces = [audio_control_interface] + cs_ac_interface.audio_streaming_interfaces + cs_ac_interface.midi_streaming_interfaces
# This will renumber the endpoints to make them unique across descriptors,
# and renumber the interfaces in order. But we still need to fix up certain
# interface cross-references.
interfaces = util.join_interfaces(cdc_interfaces, msc_interfaces, hid_interfaces, audio_interfaces)
# Now adjust the CDC interface cross-references.
cdc_union.bMasterInterface = cdc_comm_interface.bInterfaceNumber
cdc_union.bSlaveInterface_list = [cdc_data_interface.bInterfaceNumber]
cdc_call_management.bDataInterface = cdc_data_interface.bInterfaceNumber
cdc_iad = standard.InterfaceAssociationDescriptor(
description="CDC IAD",
bFirstInterface=cdc_comm_interface.bInterfaceNumber,
bInterfaceCount=len(cdc_interfaces),
bFunctionClass=cdc.CDC_CLASS_COMM, # Communications Device Class
bFunctionSubClass=cdc.CDC_SUBCLASS_ACM, # Abstract control model
bFunctionProtocol=cdc.CDC_PROTOCOL_NONE)
if 'CDC' in args.devices:
interfaces_to_join.append(cdc_interfaces)
if 'MSC' in args.devices:
interfaces_to_join.append(msc_interfaces)
if 'HID' in args.devices:
interfaces_to_join.append(hid_interfaces)
if 'AUDIO' in args.devices:
interfaces_to_join.append(audio_interfaces)
# util.join_interfaces() will renumber the endpoints to make them unique across descriptors,
# and renumber the interfaces in order. But we still need to fix up certain
# interface cross-references.
interfaces = util.join_interfaces(interfaces_to_join,
renumber_endpoints=args.renumber_endpoints)
if args.max_ep != 0:
for interface in interfaces:
for subdescriptor in interface.subdescriptors:
endpoint_address = getattr(subdescriptor, 'bEndpointAddress',
0) & 0x7f
if endpoint_address >= args.max_ep:
raise ValueError(
"Endpoint address %d of %s must be less than %d" %
(endpoint_address & 0x7f, interface.description,
args.max_ep))
else:
print("Unable to check whether maximum number of endpoints is respected",
file=sys.stderr)
if 'CDC' in args.devices:
interfaces_to_join.append(cdc_interfaces)
if 'MSC' in args.devices:
interfaces_to_join.append(msc_interfaces)
if 'HID' in args.devices:
interfaces_to_join.append(hid_interfaces)
if 'AUDIO' in args.devices:
interfaces_to_join.append(audio_interfaces)
# util.join_interfaces() will renumber the endpoints to make them unique across descriptors,
# and renumber the interfaces in order. But we still need to fix up certain
# interface cross-references.
interfaces = util.join_interfaces(*interfaces_to_join)
# Now adjust the CDC interface cross-references.
cdc_union.bMasterInterface = cdc_comm_interface.bInterfaceNumber
cdc_union.bSlaveInterface_list = [cdc_data_interface.bInterfaceNumber]
cdc_call_management.bDataInterface = cdc_data_interface.bInterfaceNumber
cdc_iad = standard.InterfaceAssociationDescriptor(
description="CDC IAD",
bFirstInterface=cdc_comm_interface.bInterfaceNumber,
bInterfaceCount=len(cdc_interfaces),
bFunctionClass=cdc.CDC_CLASS_COMM, # Communications Device Class
bFunctionSubClass=cdc.CDC_SUBCLASS_ACM, # Abstract control model
bFunctionProtocol=cdc.CDC_PROTOCOL_NONE)
bInterfaceClass=0x08,
bInterfaceSubClass=0x06,
bInterfaceProtocol=0x50,
subdescriptors=[
standard.EndpointDescriptor(
bEndpointAddress=0x0
| standard.EndpointDescriptor.DIRECTION_IN,
bmAttributes=standard.EndpointDescriptor.TYPE_BULK),
standard.EndpointDescriptor(
bEndpointAddress=0x1
| standard.EndpointDescriptor.DIRECTION_OUT,
bmAttributes=standard.EndpointDescriptor.TYPE_BULK)
])
]
interfaces = util.join_interfaces(cdc_interfaces, msc_interfaces)
cdc_function = standard.InterfaceAssociationDescriptor(
bFirstInterface=interfaces.index(cdc_interfaces[0]),
bInterfaceCount=len(cdc_interfaces),
bFunctionClass=0x2, # Communications Device Class
bFunctionSubClass=0x2, # Abstract control model
bFunctionProtocol=0x1) # Common AT Commands
configuration = standard.ConfigurationDescriptor(
wTotalLength=(standard.ConfigurationDescriptor.bLength +
cdc_function.bLength +
sum([len(bytes(x)) for x in interfaces])),
bNumInterfaces=len(interfaces))
descriptor_list = [device, configuration, cdc_function]
