53 lines
1.7 KiB
Python
53 lines
1.7 KiB
Python
#!/usr/bin/env python
|
|
|
|
# Cubesat Space Protocol - A small network-layer protocol designed for Cubesats
|
|
# Copyright (C) 2012 GomSpace ApS (http://www.gomspace.com)
|
|
# Copyright (C) 2012 AAUSAT3 Project (http://aausat3.space.aau.dk)
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# This library 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
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
# Split CFP header in protocol fields
|
|
|
|
import sys
|
|
|
|
def usage():
|
|
print("usage: cfpsplit.py HEADER")
|
|
|
|
def main():
|
|
try:
|
|
hdr = sys.argv[1]
|
|
except:
|
|
usage()
|
|
sys.exit(-1)
|
|
|
|
try:
|
|
hdrhex = int(hdr, 16)
|
|
except:
|
|
print("HEADER must be in hexadecimal format")
|
|
sys.exit(-1)
|
|
|
|
if hdrhex > 0x1fffffff:
|
|
print("HEADER is not a valid CFP header")
|
|
sys.exit(-1)
|
|
|
|
print("Source: {0}".format((hdrhex >> 24) & 0x1f))
|
|
print("Destination: {0}".format((hdrhex >> 19) & 0x1f))
|
|
print("Type: {0}".format("MORE" if ((hdrhex >> 18) & 0x01) else "BEGIN"))
|
|
print("Remain: {0}".format((hdrhex >> 10) & 0xff))
|
|
print("Identifier: {0}".format((hdrhex >> 0) & 0x3ff))
|
|
|
|
if __name__ == "__main__":
|
|
main()
|