FGFS-4.1/pyModeS
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Update uplink.py

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Flyer350 2020-11-27 10:28:20 +01:00 committed by GitHub
parent d16484bf72
commit 4471c836d9
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1 changed files with 9 additions and 13 deletions
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pyModeS/decoder/uplink.py
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@ -34,12 +34,8 @@ def bds(msg):
mbytes = list(map(common.bin2int, msgbin_split))
if uf(msg) in {4, 5, 20, 21}:
# Decode the SI or II interrogator code
# Decode the DI and get the lockout information
# conveniently (LSS or LOS)
# DI - Designator Identification
di = mbytes[1] & 0x7
di = mbytes[1] & 0x7 # DI - Designator Identification
RR = mbytes[1] >> 3 & 0x1F
if RR > 15:
BDS1 = RR - 16
@ -50,7 +46,7 @@ def bds(msg):
RRS = ((mbytes[2] & 0x1) << 4) | ((mbytes[3] & 0xE0) >> 5)
BDS2 = RRS
else:
BDS2 = 0
BDS2 = 0 # for other values of DI, the BDS2 is assumed 0 (as per ICAO Annex 10 Vol IV)
return str(BDS1) + str(BDS2)
else:
@ -161,13 +157,15 @@ def uplink_fields(msg):
BDS1 = ""
BDS2 = ""
if uf(msg) == 11:
# Decode the SI or II interrogator code
# Get cl and ic bit fields from the data
# Probability of Reply decoding
PR = ((mbytes[0] & 0x7) << 1) | ((mbytes[1] & 0x80) >> 7)
# Get cl and ic bit fields from the data
# Decode the SI or II interrogator code
codeLabel = mbytes[1] & 0x7
icField = (mbytes[1] >> 3) & 0xF
@ -182,9 +180,7 @@ def uplink_fields(msg):
IC = ic_switcher.get(codeLabel, "")
if uf(msg) in {4, 5, 20, 21}:
# Decode the SI or II interrogator code
# Decode the DI and get the lockout information
# conveniently (LSS or LOS)
# Decode the DI and get the lockout information conveniently (LSS or LOS)
# DI - Designator Identification
di = mbytes[1] & 0x7