def GetBattorSerialNumbers(device_tree_map):
for x in find_usb_devices.GetTTYList():
if IsBattor(x, device_tree_map):
(bus, device) = find_usb_devices.GetBusDeviceFromTTY(x)
devnode = device_tree_map[bus].FindDeviceNumber(device)
yield devnode.serial
def IsBattor(tty_string, device_tree_map): (bus, device) = find_usb_devices.GetBusDeviceFromTTY(tty_string) node = device_tree_map[bus].FindDeviceNumber(device) return '0403:6001' in node.desc
