How to create a fake flightlog for UAVLogViewer?

Michael_Haberler · July 25, 2023, 9:12pm

I would like to create a fake telemetry log with pymavlink to display/plot it in UAVLogViewer - eventual goal is to convert logs from the Sensorlogger app into Mavlink tlog for viewing

I can create a log with this Python script, but it seems I am either not using the right message type(s) or am missing some required messsages to generate a bona fide flight logfile.

I can open this file in UAV Log Viewer and the fields I create are visible:

However, trying to plot say GPS_INPUT.lat fails with ‘TypeError: Cannot read properties of undefined (reading ‘changeArray’)’

also, several of the tools under pymavlink/tools fail in reading the log, so I must be missing something

Is there a document which describes required Mavlink messages which must be present in a tlog? Which dialect should I choose?

thanks for any hints.

Michael Haberler

github.com

mhaberler/mavlink/blob/9d0f75abfc1fa546e07e3499324c56d5376f9314/mah/generate_fake_flightlog.py

from pymavlink import mavutil
import time

mavutil.set_dialect("common")

master = mavutil.mavlogfile(
    "logfile.tlog", source_system=1, source_component=1, write=True
)

master.mav.request_data_stream_send(
    master.target_system,
    master.target_component,
    mavutil.mavlink.MAV_DATA_STREAM_ALL,
    1,
    1,
)

start = time.time()
alt = 900
lat = 47.12805502756898

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.

auturgy · July 25, 2023, 9:13pm

Best to ask at discuss.ArduPilot.org