diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/gen_usb_descriptor.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/gen_usb_descriptor.py b/tools/gen_usb_descriptor.py index fb91fd334..baee8cad7 100644 --- a/tools/gen_usb_descriptor.py +++ b/tools/gen_usb_descriptor.py @@ -62,6 +62,8 @@ parser.add_argument('--midi_ep_num_out', type=int, default=0, help='endpoint number of MIDI OUT') parser.add_argument('--midi_ep_num_in', type=int, default=0, help='endpoint number of MIDI IN') +parser.add_argument('--max_ep', type=int, default=0, + help='total number of endpoints available') parser.add_argument('--output_c_file', type=argparse.FileType('w', encoding='UTF-8'), required=True) parser.add_argument('--output_h_file', type=argparse.FileType('w', encoding='UTF-8'), required=True) @@ -376,6 +378,15 @@ if 'AUDIO' in args.devices: # 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 may not exceed %d" % (endpoint_address & 0x7f, interface.description, args.max_ep)) +else: + print("Unable to check whether maximum number of endpoints is respected", file=sys.stderr) + # Now adjust the CDC interface cross-references. cdc_union.bMasterInterface = cdc_comm_interface.bInterfaceNumber |