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eive/eive-tmtc
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improvement for syrlinks code

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Robin Müller 2023-03-26 20:09:19 +02:00
parent 4b5c4fecc7
commit f6fcb2fb28
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2 changed files with 9 additions and 1 deletions
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4
CHANGELOG.md
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@ -15,6 +15,10 @@ list yields a list of all related PRs for each release.
- COM `Submode` enum moved from subsystem module to separate definitions module and renamed - COM `Submode` enum moved from subsystem module to separate definitions module and renamed
to `Mode`. Added re-imports with the name `ComMode` in the subsystem and syrlinks module. to `Mode`. Added re-imports with the name `ComMode` in the subsystem and syrlinks module.
## Fixed
- Eb to N0 calculation: Improve robustness against division by zero.
# [v2.19.4] 2023-03-24 # [v2.19.4] 2023-03-24
## Fixed ## Fixed

6
eive_tmtc/tmtc/com/syrlinks_handler.py
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@ -304,7 +304,11 @@ def handle_syrlinks_rx_registers_dataset(printer: FsfwTmTcPrinter, hk_data: byte
rx_agc = rx_agc_value & 0xFFF rx_agc = rx_agc_value & 0xFFF
rx_demod_eb = struct.unpack("!I", hk_data[13:17])[0] & 0xFFFFFF rx_demod_eb = struct.unpack("!I", hk_data[13:17])[0] & 0xFFFFFF
rx_demod_n0 = struct.unpack("!I", hk_data[17:21])[0] & 0xFFFFFF rx_demod_n0 = struct.unpack("!I", hk_data[17:21])[0] & 0xFFFFFF
eb_to_n0 = 20 * math.log10(rx_demod_eb / rx_demod_n0) - 3 if rx_demod_n0 > 0:
eb_to_n0 = 20 * math.log10(rx_demod_eb / rx_demod_n0) - 3
else:
logging.getLogger(__name__).warning("RX Demod N0 is 0, can not calculate Eb to N0")
eb_to_n0 = 0
rx_data_rate_raw = hk_data[21] rx_data_rate_raw = hk_data[21]
rx_data_rate = -1 rx_data_rate = -1
if rx_data_rate_raw == 0: if rx_data_rate_raw == 0: