def __init__(self, tmp_dev, device_desc):
"""
:param tmp_dev: temporary device handle, do not save.
:param device_desc: USB device descriptor.
"""
self.__desc__ = device_desc
self.vendor_id = device_desc.idVendor
self.product_id = device_desc.idProduct
self.bus = usb.get_bus_number(tmp_dev)
self.address = usb.get_device_address(tmp_dev)
# find device path.
dev_path = (ct.c_uint8 * 8)()
ret = usb.get_port_numbers(tmp_dev, dev_path, ct.sizeof(dev_path))
if ret > 0:
self.path = '.'.join([f"{p:d}" for p in dev_path][:ret])
_logger.debug(
' * {:04x}:{:04x} - bus: {:d}, device: {:d}, path: {}'.format(
self.vendor_id, self.product_id, self.bus, self.address,
self.path))
# Calculate usb product key.
self.dev_key = f'{self.vendor_id:04x}:{self.product_id:04x}'
# Find USB product group, based on first 3 digits of product id.
if self.dev_key[:8] in _USB_PRODUCT_CLASSES:
product_class = _USB_PRODUCT_CLASSES[self.dev_key[:8]]
self.class_id = product_class.class_id
self.class_descr = product_class.class_descr
self.__dev_class__ = product_class
# Find USB product description.
if self.dev_key in USB_PRODUCT_DESCRIPTIONS:
self.product_name = USB_PRODUCT_DESCRIPTIONS[self.dev_key]
def _get_device_handle(self):
"""
Return the raw LibUSB device handle pointer for our device. Must only be called from __enter__().
:return: LibUSBDeviceHandle
"""
# Get device list from libusb.
self.__dev_list__ = ct.POINTER(ct.POINTER(usb.device))()
cnt = usb.get_device_list(None, ct.byref(self.__dev_list__))
if cnt < 0:
usb_error(cnt, _('Failed to find attached USB devices.'))
return None
for dev in self.__dev_list__:
if not dev: # We must always look for the Null device and quit the loop.
break
dev_desc = usb.device_descriptor()
ret = usb.get_device_descriptor(dev, ct.byref(dev_desc))
if ret != usb.LIBUSB_SUCCESS:
usb_error(ret, _('failed to get USB device descriptor.'))
continue
if self.vendor_id == dev_desc.idVendor and self.product_id == dev_desc.idProduct and \
self.bus == usb.get_bus_number(dev) and self.address == usb.get_device_address(dev):
dev_handle = ct.POINTER(usb.device_handle)()
ret = usb.open(dev, ct.byref(dev_handle))
if ret == usb.LIBUSB_SUCCESS:
return dev_handle
usb_error(ret,
_('Failed to open device') + f' {self.dev_key}.')
self._close_device_list_handle()
_logger.debug(
_('Device was not found on host when trying to open it.'))
return None
def print_devs(devs):
path = (ct.c_uint8 * 8)()
i = 0
while devs[i]:
dev = devs[i]
desc = usb.device_descriptor()
r = usb.get_device_descriptor(dev, ct.byref(desc))
if r < 0:
print("failed to get device descriptor", file=sys.stderr)
return
print("{:04x}:{:04x} (bus {:d}, device {:d})".format(
desc.idVendor, desc.idProduct, usb.get_bus_number(dev),
usb.get_device_address(dev)),
end="")
r = usb.get_port_numbers(dev, path, ct.sizeof(path))
if r > 0:
print(" path: {:d}".format(path[0]), end="")
for j in range(1, r):
print(".{:d}".format(path[j]), end="")
print()
i += 1
def print_devs(devs):
path = (ct.c_uint8 * 8)()
i = 0
while devs[i]:
dev = devs[i]
dev_handle = ct.POINTER(usb.device_handle)()
vendor_str = ''
product_str = 'unknown'
desc = usb.device_descriptor()
r = usb.get_device_descriptor(dev, ct.byref(desc))
if r < 0:
print("failed to get device descriptor", file=sys.stderr)
return
r = usb.open(dev, ct.byref(dev_handle))
buf = ct.create_string_buffer(1024)
if r >= 0:
# for field in desc._fields_:
if desc.iProduct:
ret = usb.get_string_descriptor_ascii(
dev_handle, desc.idProduct,
ct.cast(buf, ct.POINTER(ct.c_ubyte)), ct.sizeof(buf))
if ret > 0:
product_str = buf.value.decode('utf-8')
else:
print(f'Error: returned {usb.error_name(r).decode("utf-8")} ({r})')
print(
"{:04x}:{:04x} (bus {:d}, device {:d} : Vendor: {}, Product: {})".
format(desc.idVendor, desc.idProduct, usb.get_bus_number(dev),
usb.get_device_address(dev), vendor_str, product_str),
end="")
r = usb.get_port_numbers(dev, path, ct.sizeof(path))
if r > 0:
print(" path: {:d}".format(path[0]), end="")
for j in range(1, r):
print(".{:d}".format(path[j]), end="")
print()
i += 1
def test_device(vid, pid):
speed_name = [
"Unknown",
"1.5 Mbit/s (USB LowSpeed)",
"12 Mbit/s (USB FullSpeed)",
"480 Mbit/s (USB HighSpeed)",
"5000 Mbit/s (USB SuperSpeed)",
]
handle = usb.open_device_with_vid_pid(None, vid, pid)
if not handle:
perr(" Failed.\n")
return -1
try:
dev = usb.get_device(handle) # usb.device*
bus = usb.get_bus_number(dev) # c_uint8
port_path = (c_uint8 * 8)()
r = usb.get_port_numbers(dev, port_path, sizeof(port_path))
if r > 0:
print("\nDevice properties:")
print(" bus number: {}".format(bus))
print(" port path: {}".format(port_path[0]), end="")
for i in range(1, r):
print("->{}".format(port_path[i]), end="")
print(" (from root hub)")
r = usb.get_device_speed(dev)
if r < 0 or r > 4:
r = 0
print(" speed: {}".format(speed_name[r]))
print("\nReading device descriptor:")
dev_desc = usb.device_descriptor()
r = usb.get_device_descriptor(dev, byref(dev_desc))
if r < 0:
return err_exit(r)
print(" length: {}".format(dev_desc.bLength))
print(" device class: {}".format(dev_desc.bDeviceClass))
print(" VID:PID: {:04X}:{:04X}".format(
dev_desc.idVendor, dev_desc.idProduct))
print(" bcdDevice: {:04X}".format(dev_desc.bcdDevice))
# Copy the string descriptors for easier parsing
string_index = {} # indexes of the string descriptors
string_index["Manufacturer"] = dev_desc.iManufacturer
string_index["Product"] = dev_desc.iProduct
string_index["Serial Number"] = dev_desc.iSerialNumber
print("\nReading string descriptors:")
string = (c_uint8 * 128)()
for key in string_index.keys():
if string_index[key] == 0:
continue
r = usb.get_string_descriptor_ascii(handle, string_index[key],
string, sizeof(string))
if r > 0:
print(" {}: {}".format(key, bytearray(string[:r]).decode()))
# MS OS 1.0 Descriptors
read_ms_os_10_descriptors(handle)
print("\nReading BOS descriptor: ", end="")
bos_desc = POINTER(usb.bos_descriptor)()
if usb.get_bos_descriptor(handle,
pointer(bos_desc)) == usb.LIBUSB_SUCCESS:
print((bos_desc[0].bNumDeviceCaps))
caps = cast(pointer(bos_desc[0].dev_capability),
POINTER(POINTER(usb.bos_dev_capability_descriptor)))
for i in range(bos_desc[0].bNumDeviceCaps):
# print_device_cap(caps[i])
if caps[i][0].bDevCapabilityType == 0x05:
desc = cast(caps[i],
POINTER(PlatformCapabilityDescriptor))[0]
uuid = uuid_to_string(desc.PlatformCapabilityUUID)
if uuid == MS_OS_20_PLATFORM_CAPABILITY_UUID:
print(" MS OS 2.0 Platform Capability Descriptor")
print(" UUID: {}".format(uuid))
desc = cast(
caps[i],
POINTER(MSOS20PlatformCapabilityDescriptor))[0]
print(" VendorCode: 0x{:02X}".format(
desc.bVendorCode))
read_ms_os_20_descriptors(handle, desc.bVendorCode)
elif uuid == WEBUSB_PLATFORM_CAPABILITY_UUID:
print(" WebUSB Platform Capability UUID")
print(" UUID: {}".format(uuid))
desc = cast(
caps[i],
POINTER(WebUSBPlatformCapabilityDescriptor))[0]
print(" VendorCode: 0x{:02X}".format(
desc.bVendorCode))
else:
print(" UUID: {}".format(uuid))
usb.free_bos_descriptor(bos_desc)
else:
print("no descriptor")
finally:
usb.close(handle)
return 0
def main(argv=sys.argv):
global verbose
FIRMWARE = 0
LOADER = 1
known_devices = FX_KNOWN_DEVICES
paths = [None, None] # [const char*]
device_id = None # const char*
device_path = os.environ.get("DEVICE", None)
target_type = None # const char*
fx_names = FX_TYPE_NAMES
img_names = IMG_TYPE_NAMES
fx_type = FX_TYPE_UNDEFINED # int
img_types = [0] * len(paths) # [int]
#opt; # int
#status; # int
#ext; # const char*
#i, j; # unsigned int
vid = 0 # unsigned
pid = 0 # unsigned
busnum = 0 # unsigned
devaddr = 0 # unsigned
#_busnum; # unsigned
#_devaddr; # unsigned
dev = ct.POINTER(usb.device)()
devs = ct.POINTER(ct.POINTER(usb.device))()
device = ct.POINTER(usb.device_handle)()
desc = usb.device_descriptor()
try:
opts, args = getopt.getopt(argv[1:], "qvV?hd:p:i:I:s:S:t:")
except getopt.GetoptError:
return print_usage(-1)
for opt, optarg in opts:
if opt == "-d":
device_id = optarg
if sscanf(device_id, "%x:%x", ct.byref(vid), ct.byref(pid)) != 2:
print(
"please specify VID & PID as \"vid:pid\" in hexadecimal format",
file=sys.stderr)
return -1
elif opt == "-p":
device_path = optarg
if sscanf(device_path, "%u,%u", ct.byref(busnum),
ct.byref(devaddr)) != 2:
print(
"please specify bus number & device number as \"bus,dev\" in decimal format",
file=sys.stderr)
return -1
elif opt in ("-i", "-I"):
paths[FIRMWARE] = optarg
elif opt in ("-s", "-S"):
paths[LOADER] = optarg
elif opt == "-V":
print(FXLOAD_VERSION)
return 0
elif opt == "-t":
target_type = optarg
elif opt == "-v":
verbose += 1
elif opt == "-q":
verbose -= 1
elif opt in ("-?", "-h"):
return print_usage(-1)
else:
return print_usage(-1)
if paths[FIRMWARE] is None:
logerror("no firmware specified!\n")
return print_usage(-1)
if device_id is not None and device_path is not None:
logerror("only one of -d or -p can be specified\n")
return print_usage(-1)
# determine the target type
if target_type is not None:
for i in range(FX_TYPE_MAX):
if fx_names[i] == target_type:
fx_type = i
break
else:
logerror("illegal microcontroller type: {}\n", target_type)
return print_usage(-1)
# open the device using libusb
status = usb.init(None)
if status < 0:
logerror("usb.init() failed: {}\n", usb.error_name(status))
return -1
try:
usb.set_option(None, usb.LIBUSB_OPTION_LOG_LEVEL, verbose)
# try to pick up missing parameters from known devices
if target_type is None or device_id is None or device_path is not None:
if usb.get_device_list(None, ct.byref(devs)) < 0:
logerror("libusb.get_device_list() failed: {}\n",
usb.error_name(status))
return -1
i = 0
while True:
dev = devs[i]
if not dev:
usb.free_device_list(devs, 1)
logerror(
"could not find a known device - please specify type and/or vid:pid and/or bus,dev\n"
)
return print_usage(-1)
_busnum = usb.get_bus_number(dev)
_devaddr = usb.get_device_address(dev)
if target_type is not None and device_path is not None:
# if both a type and bus,addr were specified, we just need to find our match
if (usb.get_bus_number(dev) == busnum
and usb.get_device_address(dev) == devaddr):
break
else:
status = usb.get_device_descriptor(dev, ct.byref(desc))
if status >= 0:
if verbose >= 3:
logerror("examining {:04x}:{:04x} ({},{})\n",
desc.idVendor, desc.idProduct, _busnum,
_devaddr)
if_break = False
for known_device in known_devices:
if (desc.idVendor == known_device.vid
and desc.idProduct == known_device.pid):
if ( # nothing was specified
(target_type is None and device_id is None
and device_path is None) or
# vid:pid was specified and we have a match
(target_type is None
and device_id is not None
and vid == desc.idVendor
and pid == desc.idProduct) or
# bus,addr was specified and we have a match
(target_type is None
and device_path is not None
and busnum == _busnum
and devaddr == _devaddr) or
# type was specified and we have a match
(target_type is not None
and device_id is None
and device_path is None
and fx_type == known_device.type)):
fx_type = known_device.type
vid = desc.idVendor
pid = desc.idProduct
busnum = _busnum
devaddr = _devaddr
if_break = True
break
if if_break:
if verbose:
logerror(
"found device '{}' [{:04x}:{:04x}] ({},{})\n",
known_device.designation, vid, pid, busnum,
devaddr)
break
i += 1
status = usb.open(dev, ct.byref(device))
usb.free_device_list(devs, 1)
if status < 0:
logerror("usb.open() failed: {}\n", usb.error_name(status))
return -1
elif device_id is not None:
device = usb.open_device_with_vid_pid(None, ct.c_uint16(vid),
ct.c_uint16(pid))
if not device:
logerror("usb.open() failed\n")
return -1
# We need to claim the first interface
usb.set_auto_detach_kernel_driver(device, 1)
status = usb.claim_interface(device, 0)
if status != usb.LIBUSB_SUCCESS:
usb.close(device)
logerror("libusb.claim_interface failed: {}\n",
usb.error_name(status))
return -1
if verbose:
logerror("microcontroller type: {}\n", fx_names[fx_type])
for i, path in enumerate(paths):
if path is not None:
ext = path[-4:]
if ext.lower() == ".hex" or ext == ".ihx":
img_types[i] = IMG_TYPE_HEX
elif ext.lower() == ".iic":
img_types[i] = IMG_TYPE_IIC
elif ext.lower() == ".bix":
img_types[i] = IMG_TYPE_BIX
elif ext.lower() == ".img":
img_types[i] = IMG_TYPE_IMG
else:
logerror("{} is not a recognized image type\n", path)
return -1
if verbose and path is not None:
logerror("{}: type {}\n", path, img_names[img_types[i]])
if paths[LOADER] is None:
# single stage, put into internal memory
if verbose > 1:
logerror("single stage: load on-chip memory\n")
status = ezusb_load_ram(device, paths[FIRMWARE], fx_type,
img_types[FIRMWARE], 0)
else:
# two-stage, put loader into internal memory
if verbose > 1:
logerror("1st stage: load 2nd stage loader\n")
status = ezusb_load_ram(device, paths[LOADER], fx_type,
img_types[LOADER], 0)
if status == 0:
# two-stage, put firmware into internal memory
if verbose > 1:
logerror("2nd state: load on-chip memory\n")
status = ezusb_load_ram(device, paths[FIRMWARE], fx_type,
img_types[FIRMWARE], 1)
usb.release_interface(device, 0)
usb.close(device)
finally:
usb.exit(None)
return status
def test_device(vid, pid):
#int r;
speed_name = [
"Unknown",
"1.5 Mbit/s (USB LowSpeed)",
"12 Mbit/s (USB FullSpeed)",
"480 Mbit/s (USB HighSpeed)",
"5000 Mbit/s (USB SuperSpeed)",
]
print("Opening device {:04X}:{:04X}...".format(vid, pid))
#handle = ct.POINTER(usb.device_handle)()
handle = usb.open_device_with_vid_pid(None, vid, pid)
if not handle:
perr(" Failed.\n")
return -1
endpoint_in = 0 # default IN endpoint
endpoint_out = 0 # default OUT endpoint
try:
dev = usb.get_device(handle) # usb.device*
bus = usb.get_bus_number(dev) # ct.c_uint8
if extra_info:
port_path = (ct.c_uint8 * 8)()
r = usb.get_port_numbers(dev, port_path, ct.sizeof(port_path))
if r > 0:
print("\nDevice properties:")
print(" bus number: {}".format(bus))
print(" port path: {}".format(port_path[0]), end="")
for i in range(1, r):
print("->{}".format(port_path[i]), end="")
print(" (from root hub)")
r = usb.get_device_speed(dev)
if r < 0 or r > 4: r = 0
print(" speed: {}".format(speed_name[r]))
print("\nReading device descriptor:")
dev_desc = usb.device_descriptor()
r = usb.get_device_descriptor(dev, ct.byref(dev_desc))
if r < 0:
return err_exit(r)
print(" length: {}".format(dev_desc.bLength))
print(" device class: {}".format(dev_desc.bDeviceClass))
print(" S/N: {}".format(dev_desc.iSerialNumber))
print(" VID:PID: {:04X}:{:04X}".format(dev_desc.idVendor,
dev_desc.idProduct))
print(" bcdDevice: {:04X}".format(dev_desc.bcdDevice))
print(" iMan:iProd:iSer: {}:{}:{}".format(
dev_desc.iManufacturer, dev_desc.iProduct, dev_desc.iSerialNumber))
print(" nb confs: {}".format(dev_desc.bNumConfigurations))
# Copy the string descriptors for easier parsing
string_index = (ct.c_uint8 * 3)() # indexes of the string descriptors
string_index[0] = dev_desc.iManufacturer
string_index[1] = dev_desc.iProduct
string_index[2] = dev_desc.iSerialNumber
print("\nReading BOS descriptor: ", end="")
bos_desc = usb.bos_descriptor*()
if usb.get_bos_descriptor(handle, ct.byref(bos_desc)) == usb.LIBUSB_SUCCESS:
print("{} caps".format(bos_desc[0].bNumDeviceCaps))
for i in range(bos_desc[0].bNumDeviceCaps):
print_device_cap(bos_desc[0].dev_capability[i])
usb.free_bos_descriptor(bos_desc)
else:
print("no descriptor")
print("\nReading first configuration descriptor:")
conf_desc = usb.config_descriptor*()
r = usb.get_config_descriptor(dev, 0, ct.byref(conf_desc))
if r < 0:
return err_exit(r)
nb_ifaces = conf_desc[0].bNumInterfaces # int
print(" nb interfaces: {}".format(nb_ifaces))
first_iface = (conf_desc[0].usb_interface[0].altsetting[0].bInterfaceNumber
if nb_ifaces > 0 else -1)
for i in range(nb_ifaces):
usb_interface = conf_desc[0].usb_interface[i]
print(" interface[{}]: id = {}".format(
i, usb_interface.altsetting[0].bInterfaceNumber))
for j in range(usb_interface.num_altsetting):
altsetting = usb_interface.altsetting[j]
print("interface[{}].altsetting[{}]: num endpoints = {}".format(
i, j, altsetting.bNumEndpoints))
print(" Class.SubClass.Protocol: {:02X}.{:02X}.{:02X}".format(
altsetting.bInterfaceClass,
altsetting.bInterfaceSubClass,
altsetting.bInterfaceProtocol))
if (altsetting.bInterfaceClass == usb.LIBUSB_CLASS_MASS_STORAGE and
(altsetting.bInterfaceSubClass == 0x01 or
altsetting.bInterfaceSubClass == 0x06) and
altsetting.bInterfaceProtocol == 0x50):
# Mass storage devices that can use basic SCSI commands
test_mode = USE_SCSI
for k in range(altsetting.bNumEndpoints):
endpoint = altsetting.endpoint[k] # const usb.endpoint_descriptor*
print(" endpoint[{}].address: {:02X}".format(
k, endpoint.bEndpointAddress))
# Use the first interrupt or bulk IN/OUT endpoints as default for testing
if ((endpoint.bmAttributes & usb.LIBUSB_TRANSFER_TYPE_MASK) &
(usb.LIBUSB_TRANSFER_TYPE_BULK | usb.LIBUSB_TRANSFER_TYPE_INTERRUPT)):
if endpoint.bEndpointAddress & usb.LIBUSB_ENDPOINT_IN:
if not endpoint_in:
endpoint_in = endpoint.bEndpointAddress
else:
if not endpoint_out:
endpoint_out = endpoint.bEndpointAddress
print(" max packet size: {:04X}".format(endpoint.wMaxPacketSize))
print(" polling interval: {:02X}".format(endpoint.bInterval))
ep_comp = ct.POINTER(usb.ss_endpoint_companion_descriptor)()
usb.get_ss_endpoint_companion_descriptor(None, ct.byref(altsetting.endpoint[k]),
ct.byref(ep_comp))
if ep_comp:
print(" max burst: {:02X} (USB 3.0)".format(ep_comp[0].bMaxBurst))
print(" bytes per interval: {:04X} (USB 3.0)".format(ep_comp[0].wBytesPerInterval))
usb.free_ss_endpoint_companion_descriptor(ep_comp)
usb.free_config_descriptor(conf_desc)
usb.set_auto_detach_kernel_driver(handle, 1)
for iface in range(nb_ifaces):
print("\nClaiming interface {}...".format(iface))
r = usb.claim_interface(handle, iface)
if r != usb.LIBUSB_SUCCESS:
perr(" Failed.\n")
print("\nReading string descriptors:")
string = (ct.c_char * 128)()
for i in range(3):
if string_index[i] == 0:
continue
if usb.get_string_descriptor_ascii(handle, string_index[i],
ct.cast(string, ct.POINTER(ct.c_ubyte)), ct.sizeof(string)) > 0:
print(" String ({:#04X}): \"{}\"".format(string_index[i], string))
# Read the OS String Descriptor
r = usb.get_string_descriptor(handle, MS_OS_DESC_STRING_INDEX, 0,
ct.cast(string, ct.POINTER(ct.c_ubyte)), MS_OS_DESC_STRING_LENGTH)
if r == MS_OS_DESC_STRING_LENGTH and memcmp(ms_os_desc_string, string, sizeof(ms_os_desc_string)) == 0:
# If this is a Microsoft OS String Descriptor,
# attempt to read the WinUSB extended Feature Descriptors
read_ms_winsub_feature_descriptors(handle, string[MS_OS_DESC_VENDOR_CODE_OFFSET], first_iface)
if test_mode == USE_PS3:
r = display_ps3_status(handle)
if r < 0:
return err_exit(r)
elif test_mode == USE_XBOX:
r = display_xbox_status(handle)
if r < 0:
return err_exit(r)
r = set_xbox_actuators(handle, 128, 222)
if r < 0:
return err_exit(r)
msleep(2000)
r = set_xbox_actuators(handle, 0, 0)
if r < 0:
return err_exit(r)
elif test_mode == USE_HID:
test_hid(handle, endpoint_in)
elif test_mode == USE_SCSI:
r = test_mass_storage(handle, endpoint_in, endpoint_out)
if r < 0:
return err_exit(r)
elif test_mode == USE_GENERIC:
pass
print()
for iface in range(nb_ifaces):
print("Releasing interface {}...".format(iface))
usb.release_interface(handle, iface)
print("Closing device...")
finally:
usb.close(handle)
return 0
def print_device(device_p, level):
global verbose
string_descr = ct.create_string_buffer(256)
desc = usb.device_descriptor()
ret = usb.get_device_descriptor(device_p, ct.byref(desc))
if ret < 0:
print("failed to get device descriptor", file=sys.stderr)
return -1
handle = ct.POINTER(usb.device_handle)()
ret = usb.open(device_p, ct.byref(handle))
if ret == usb.LIBUSB_SUCCESS:
if desc.iManufacturer:
ret = usb.get_string_descriptor_ascii(
handle, desc.iManufacturer,
ct.cast(string_descr, ct.POINTER(ct.c_ubyte)),
ct.sizeof(string_descr))
if ret > 0:
description = "{!s} - ".format(string_descr.value.decode())
else:
description = "{:04X} - ".format(desc.idVendor)
else:
description = "{:04X} - ".format(desc.idVendor)
if desc.iProduct:
ret = usb.get_string_descriptor_ascii(
handle, desc.iProduct,
ct.cast(string_descr, ct.POINTER(ct.c_ubyte)),
ct.sizeof(string_descr))
if ret > 0:
description += "{!s}".format(string_descr.value.decode())
else:
description += "{:04X}".format(desc.idProduct)
else:
description += "{:04X}".format(desc.idProduct)
else:
description = "{:04X} - {:04X}".format(desc.idVendor, desc.idProduct)
print("{:<{width}}Dev (bus {:d}, device {:d}): {}".format(
" " * 20,
usb.get_bus_number(device_p),
usb.get_device_address(device_p),
description,
width=level * 2))
if handle and verbose:
if desc.iSerialNumber:
ret = usb.get_string_descriptor_ascii(
handle, desc.iSerialNumber,
ct.cast(string_descr, ct.POINTER(ct.c_ubyte)),
ct.sizeof(string_descr))
if ret > 0:
print("{:<{width}} - Serial Number: {!s}".format(
" " * 20, string_descr.value.decode(), width=level * 2))
if verbose:
for i in range(desc.bNumConfigurations):
config = ct.POINTER(usb.config_descriptor)()
ret = usb.get_config_descriptor(device_p, i, ct.byref(config))
if ret != usb.LIBUSB_SUCCESS:
print(" Couldn't retrieve descriptors")
continue
print_configuration(config[0])
usb.free_config_descriptor(config)
if handle and desc.bcdUSB >= 0x0201:
print_bos(handle[0])
if handle:
usb.close(handle)
return 0