In recent flights I’ve noticed that GPS status has been recorded as 4 in the data flash log. This happens either from the outset or part way through the flight.
Where this happens from the outset it causes Mission Planner to fail to calculate the date/time stamp for any of the messages, and causes Mission Planners geotagging to fail. It also prevents Mission Planner from correctly naming the log file when downloaded via MavLink - instead of being named after the date and time of the mission, it takes the date time of the download.
For flights where the status changed from 3 to 4 mid flight this was not problematic for Mission Planner.
Does anyone know why the status might be recorded as 4? It is not mentioned in the Wiki and it seems Mission Planner can’t cope with it.
I was able to resolve the geotagging and time stamp problems (not the download naming problem) by editing the log file and changing all the 4s to 3s. Then Mission Planner accepted it.
I’m running Arducopter 3.3 on a Pixhawk with Neo 8 gps/compass module (well, supposedly, but I’m not sure how to check it really is an 8) and Mission Planner 1.3.32.