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WIP: Enhancement nasa#103 - Implemented native cmdUtil
Native cmdUtil has only subset of full cmdUtil functionality Also implemented updates to GUI and backend to support custom byte offsets in tlm and cmd
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# | ||
# GSC-18128-1, "Core Flight Executive Version 6.7" | ||
# | ||
# Copyright (c) 2006-2019 United States Government as represented by | ||
# the Administrator of the National Aeronautics and Space Administration. | ||
# All Rights Reserved. | ||
# | ||
# 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 | ||
# | ||
# http://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. | ||
# | ||
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## This file is a Python implementation of a subset of functions in cmdUtil | ||
## to support the GroundSystem GUI | ||
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import socket | ||
import sys | ||
from pathlib import Path | ||
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ROOTDIR = Path().resolve().parent | ||
sys.path.append(ROOTDIR.parent.parent) | ||
## The two preceding lines must be above | ||
## the next import or the import will fail | ||
import common.shareddata as shared | ||
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class MiniCmdUtil: | ||
ccsdsExt = bytearray(4) | ||
cfsCmdSecHdr = bytearray(2) | ||
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def __init__(self, | ||
host="127.0.0.1", | ||
port="1234", | ||
endian="BE", | ||
hdrVer=1, | ||
pktID=None, | ||
cmdCode=None, | ||
payload=None): | ||
endians = {"BE": ">", "LE": "<"} | ||
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self.host = host | ||
self.port = port | ||
self.endian = ">" if endian == "BE" else "<" | ||
self.pktID = pktID | ||
self.cmdCode = cmdCode | ||
self.hdrVer = hdrVer | ||
self.payload = payload | ||
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) | ||
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def assemblePriHeader(self): | ||
ccsdsPri = bytearray(6) | ||
ccsdsPri[0:2] = self.pktID.to_bytes(2, byteorder='big') | ||
ccsdsPri[2:4] = (0xC000).to_bytes(2, byteorder='big') | ||
totalPacketLen = len(ccsdsPri) + len(self.cfsCmdSecHdr) | ||
if self.hdrVer == 2: | ||
totalPacketLen += len(self.ccsdsExt) | ||
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def assemblePayload(self): | ||
pass |
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