FGFS-4.1/pyModeS
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simplify hex2bin()

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This commit is contained in:
Junzi Sun 2016-01-28 11:14:14 +01:00
parent 2e3ceed0b0
commit 818207a4d8
1 changed files with 5 additions and 5 deletions
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10
decoder.py
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@ -42,11 +42,10 @@ MODES_CHECKSUM_TABLE = [
def hex2bin(hexstr): def hex2bin(hexstr):
"""Convert a hexdecimal string to binary string, with zero fillings. """ """Convert a hexdecimal string to binary string, with zero fillings. """
length = len(hexstr) * 4 scale = 16
msgbin = bin(int(hexstr, 16))[2:] num_of_bits = len(hexstr) * math.log(scale, 2)
while ((len(msgbin)) < length): binstr = bin(int(hexstr, scale))[2:].zfill(int(num_of_bits))
msgbin = '0' + msgbin return binstr
return msgbin
def bin2int(binstr): def bin2int(binstr):
@ -230,6 +229,7 @@ def cpr2position(cprlat0, cprlat1, cprlon0, cprlon1, t0, t1):
return lat, lon return lat, lon
def get_velocity(msg): def get_velocity(msg):
"""Calculate the speed, heading, and vertical rate""" """Calculate the speed, heading, and vertical rate"""