Source code for spinnman.utilities.locate_connected_machine_ip_address

# Copyright (c) 2017-2019 The University of Manchester
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import time
import sys
import signal
import socket
from spinnman.connections.udp_packet_connections import IPAddressesConnection


[docs]def locate_connected_machine(handler): """ Locates any SpiNNaker machines IP addresses from the auto-transmitted\ packets from non-booted SpiNNaker machines. :param callable handler: A callback that decides whether to stop searching. The callback is given two arguments: the IP address found and the current time. It should return True if the search should cease. """ connection = IPAddressesConnection() seen_boards = set() while True: ip_address = connection.receive_ip_address() now = time.time() if ip_address is not None and ip_address not in seen_boards: seen_boards.add(ip_address) if handler(ip_address, now): break
if __name__ == "__main__": def _ctrlc_handler(sig, frame): # @UnusedVariable """ :param sig: :param frame: :return: Never returns as it causes a sys.exit() """ # pylint: disable=unused-argument print("Exiting") sys.exit() def _print_connected(ip_address, timestamp): print(ip_address, "({})".format( socket.gethostbyaddr(ip_address)[0]), "at", timestamp) return False print("The following addresses might be SpiNNaker boards " "(press Ctrl-C to quit):") signal.signal(signal.SIGINT, _ctrlc_handler) locate_connected_machine(handler=_print_connected)