Source code for spinnman.messages.eieio.create_eieio_command

# 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/>.

from spinnman.messages.eieio.command_messages import (
    PaddingRequest, EventStopRequest, StopRequests, StartRequests,
    SpinnakerRequestBuffers, HostSendSequencedData, SpinnakerRequestReadData,
    HostDataRead, EIEIOCommandHeader, EIEIOCommandMessage,
    DatabaseConfirmation)
from spinnman.constants import EIEIO_COMMAND_IDS


[docs]def read_eieio_command_message(data, offset): """ Reads the content of an EIEIO command message and returns an object\ identifying the command which was contained in the packet, including\ any parameter, if required by the command :param bytes data: data received from the network as a bytestring :param int offset: offset at which the parsing operation should start :return: an object which inherits from EIEIOCommandMessage which contains parsed data received from the network :rtype: EIEIOCommandMessage """ command_header = EIEIOCommandHeader.from_bytestring(data, offset) command_number = command_header.command if command_number == EIEIO_COMMAND_IDS.DATABASE_CONFIRMATION.value: return DatabaseConfirmation.from_bytestring( command_header, data, offset + 2) # Fill in buffer area with padding elif command_number == EIEIO_COMMAND_IDS.EVENT_PADDING.value: return PaddingRequest() # End of all buffers, stop execution elif command_number == EIEIO_COMMAND_IDS.EVENT_STOP.value: return EventStopRequest() # Stop complaining that there is SDRAM free space for buffers elif command_number == EIEIO_COMMAND_IDS.STOP_SENDING_REQUESTS.value: return StopRequests() # Start complaining that there is SDRAM free space for buffers elif command_number == EIEIO_COMMAND_IDS.START_SENDING_REQUESTS.value: return StartRequests() # SpiNNaker requesting new buffers for spike source population elif command_number == EIEIO_COMMAND_IDS.SPINNAKER_REQUEST_BUFFERS.value: return SpinnakerRequestBuffers.from_bytestring( command_header, data, offset + 2) # Buffers being sent from host to SpiNNaker elif command_number == EIEIO_COMMAND_IDS.HOST_SEND_SEQUENCED_DATA.value: return HostSendSequencedData.from_bytestring( command_header, data, offset + 2) # Buffers available to be read from a buffered out vertex elif command_number == EIEIO_COMMAND_IDS.SPINNAKER_REQUEST_READ_DATA.value: return SpinnakerRequestReadData.from_bytestring( command_header, data, offset + 2) # Host confirming data being read form SpiNNaker memory elif command_number == EIEIO_COMMAND_IDS.HOST_DATA_READ.value: return HostDataRead.from_bytestring( command_header, data, offset + 2) return EIEIOCommandMessage(command_header, data, offset + 2)