A program to decode and display LASP-Strateole2 Telemetry Messages (TMs). These messages are transmitted in real-time via the Zephyr system, and stored locally on the LPC mainboard SD card. The output is printed in CSV format. A CSV header is included. An option for saving to a CSV file is provided.
The program attempts to determine which instrument the file contins
data for: LPC or RS41. If it cannot determine this automatically,
use the -l or -r switches.
There are two sample TMs included here which can be used to try out the application:
TM.RS41.ready_tm: An RS41 telemetry messageTM.LPC.ready_tm: An LPC telemetry message.
The .ready_tm file extension is the convention that CNES uses for
the files created by their ground system.
The .dump files are the text output from a binary dump made
with the od program. They are useful for diagnosing the internal
format of the TM messages. They were created with the Linux od command:
od -a -t x1 -A d TM.LPC.ready_tm > TM.LPC.dumppip3 install xmltodict numpy
git clone https://github.com/MisterMartin/TMdecoder.gitcd TMdecoder
python3 TMdecoder.py -o rs41.csv TM.RS41.ready_tm
python3 TMdecoder.py -o lpc.csv TM.LPC.ready_tmpython3 TMdecoder.py -h displays help:
usage: TMdecoder [-h] [-l] [-r] [-c CSV] [-b] [-t] [-q] filename
Decode a LASP StratoCore TM message and produce CSV
positional arguments:
filename TM message file, or file extension (for batch processing)
optional arguments:
-h, --help show this help message and exit
-l, --lpc LPC file
-r, --rs41 RS41 file
-c CSV, --csv CSV Save CSV to a file
-b, --batch Batch process, creating .csv files
-t, --tm Print the TM header
-q, --quiet Turn off printing
If -l or -r are not specified, try to automatically determine the msg type. Only one of -c or -b is allowed. In batch mode, the current directory is searched for the
files.'
The LPC message binary section decoding was adapted from
readPCXML_2021.py.