2046b1de07
* remove unused functions * cythonize common * add bds05 * separate cleanly cython and python, bds05, bds06, modulo issues * bds08 * bds09 * optimisations in bds09 * "make" things easier * clean up useless stuff * add make options * fix hidden altitude() call * minor updates to C code * update tests * update benchmark * consolidation * update clean script * reduce complexity and change default type to str Co-authored-by: Xavier Olive <1360812+xoolive@users.noreply.github.com>
54 lines
1.1 KiB
Python
54 lines
1.1 KiB
Python
# ------------------------------------------
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# BDS 1,0
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# Data link capability report
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# ------------------------------------------
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from __future__ import absolute_import, print_function, division
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from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
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def is10(msg):
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"""Check if a message is likely to be BDS code 1,0
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Args:
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msg (String): 28 bytes hexadecimal message string
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Returns:
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bool: True or False
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"""
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if allzeros(msg):
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return False
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d = hex2bin(data(msg))
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# first 8 bits must be 0x10
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if d[0:8] != "00010000":
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return False
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# bit 10 to 14 are reserved
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if bin2int(d[9:14]) != 0:
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return False
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# overlay capability conflict
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if d[14] == "1" and bin2int(d[16:23]) < 5:
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return False
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if d[14] == "0" and bin2int(d[16:23]) > 4:
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return False
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return True
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def ovc10(msg):
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"""Return the overlay control capability
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Args:
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msg (String): 28 bytes hexadecimal message string
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Returns:
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int: Whether the transponder is OVC capable
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"""
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d = hex2bin(data(msg))
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return int(d[14])
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