53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
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#!/usr/bin/env python
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# Cubesat Space Protocol - A small network-layer protocol designed for Cubesats
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# Copyright (C) 2012 GomSpace ApS (http://www.gomspace.com)
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# Copyright (C) 2012 AAUSAT3 Project (http://aausat3.space.aau.dk)
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Split CSP header in protocol fields
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import sys
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def usage():
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print("usage: cspsplit.py HEADER")
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def main():
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try:
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hdr = sys.argv[1]
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except:
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usage()
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sys.exit(-1)
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try:
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hdrhex = int(hdr, 16)
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except:
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print("HEADER must be in hexadecimal format")
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sys.exit(-1)
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print("Priotity: {0}".format((hdrhex >> 30) & 0x03))
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print("Source: {0}".format((hdrhex >> 25) & 0x1f))
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print("Destination: {0}".format((hdrhex >> 20) & 0x1f))
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print("Destination port: {0}".format((hdrhex >> 14) & 0x3f))
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print("Source port: {0}".format((hdrhex >> 8) & 0x3f))
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print("HMAC: {0}".format("Yes" if ((hdrhex >> 3) & 0x01) else "No"))
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print("XTEA: {0}".format("Yes" if ((hdrhex >> 2) & 0x01) else "No"))
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print("RDP: {0}".format("Yes" if ((hdrhex >> 1) & 0x01) else "No"))
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print("CRC32: {0}".format("Yes" if ((hdrhex >> 0) & 0x01) else "No"))
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if __name__ == "__main__":
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main()
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