Source code for spinnman.messages.scp.scp_response_header
# Copyright (c) 2014 The University of Manchester
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import struct
from spinnman.messages.scp.enums import SCPResult
_TWO_SHORTS = struct.Struct("<2H")
[docs]class SCPResponseHeader(object):
"""
Represents the header of an SCP Response.
"""
__slots__ = [
"_result",
"_sequence"]
def __init__(self, result=None, sequence=None):
"""
:param SCPResult result:
:param int sequence:
"""
self._result = result
self._sequence = sequence
@property
def result(self):
"""
The result of the SCP response.
:rtype: SCPResult
"""
return self._result
@property
def sequence(self):
"""
The sequence number of the SCP response, between 0 and 65535.
:rtype: int
"""
return self._sequence
[docs] @staticmethod
def from_bytestring(data, offset):
"""
Read a header from a bytestring.
:param bytes data: The bytestring to read from
:param int offset:
"""
result, sequence = _TWO_SHORTS.unpack_from(data, offset)
return SCPResponseHeader(SCPResult(result), sequence)