I have Flight Log errors caused by having both Wifi and Auto Sync on during a flight. Normally I fly with Auto on and Wifi off, but this time I happen to have turned wifi on after takeoff, so as to download the most detailed possible map for that area.
That Having Auto Sync On can cause broken files is documented--for example here in the Mini forum and here in the Mavic 2 forum, and I wish I'd known that previously. AirData recommends leaving it Off at all times. If you aren't familiar with this issue and don't want to read the regrettably long post, skip to "The Bottom Line".
The issue in simple terms is that the Fly App (1.6.9 in my case) may be uploading partial Flight Records to the DJI server while you are flying. Airdata may then pick these up and list them as separate flights. How (If ever) the records are sorted and concatenated by the DJI server is beyond me.
I have a bit of a variation on what was reported elsewhere...My RC controller had multiple files for one single long flight, and some of those files were portions of another. My RC had multiple files for the same flight. One flight record is a duplicate part (subset) of a greater flight record (not a simple splitting of one record), and that greater flight record is missing the end of the actual flight, and that missing part is in a different file which has a Flight Reader indexed Start Time of 4:48 and End Time of 4:47, not to mention that the flight record for the end part also has a partial duplicate (subset) file--also with an end time before the start time. Go figure.
These flight records all have an Index listed as 104.
Some of the file names for the raw data may have changed slightly when uploading to Drop Box.
I think...
This Flight Record (A) is a subset of this Flight Record (A-Plus), and this Flight Record (B) is the completion of "Flight Record A-Plus." However, Flight Record (B-Minus)" appears to be a subset of "B".
"B" and "B-Minus" are the ones with the indexed start time appearing to be later than the end time when listed in Fight Reader and both show about a 4.5 second time gap between the end of A-Plus and the beginning of B.**
Question 1: Can anyone verify I am correct in how the Flight Records are related?
Question 2: Can anyone please tell me how to join "B" to the end of "A-Plus" so I can reload it to Flight Reader and AirData?
Question 3: What accounts for B having an end time before the start time in Flight Reader?
Question 4: Why in the csv/aircraft log files, is the first entry in the Custom Update Time (first column) sometimes listed with a time of " " (Blank) in Airdata, or "00:00.0" in Flight Reader-aircraft-csv, or "7 pm" in Flight Reader-aircraft-log, while at other times in all cases the first line's entry will be an actual time that is just before the second line's timestamp?
Question 5: Is it odd/likely that the time gap in the split flight record files was caused by moving away from the Camera View screen, thereby interrupting the Flight Record?
The Bottom Line: Don't fly the RC controller with both Wifi and Auto Sync on or you may get very confused (or confusing) flight records.
Thanks ahead of time for the education and the assistance.
I hope wasting my morning on this mistake keeps someone else from having to waste theirs...
Mike
**The time gap may have been caused by leaving the Camera View screen momentarily, but I cannot tell yet. I saw in my Screen Recording that my fat thumb hit the View Files icon instead of the Auto Focus icon and that caused the RC controller to move away from the Camera View screen and to the "Home Screen" (black screen, pic of M3P, Connection guide, etc) until I switched it back.
That Having Auto Sync On can cause broken files is documented--for example here in the Mini forum and here in the Mavic 2 forum, and I wish I'd known that previously. AirData recommends leaving it Off at all times. If you aren't familiar with this issue and don't want to read the regrettably long post, skip to "The Bottom Line".
The issue in simple terms is that the Fly App (1.6.9 in my case) may be uploading partial Flight Records to the DJI server while you are flying. Airdata may then pick these up and list them as separate flights. How (If ever) the records are sorted and concatenated by the DJI server is beyond me.
I have a bit of a variation on what was reported elsewhere...My RC controller had multiple files for one single long flight, and some of those files were portions of another. My RC had multiple files for the same flight. One flight record is a duplicate part (subset) of a greater flight record (not a simple splitting of one record), and that greater flight record is missing the end of the actual flight, and that missing part is in a different file which has a Flight Reader indexed Start Time of 4:48 and End Time of 4:47, not to mention that the flight record for the end part also has a partial duplicate (subset) file--also with an end time before the start time. Go figure.
These flight records all have an Index listed as 104.
Some of the file names for the raw data may have changed slightly when uploading to Drop Box.
I think...
This Flight Record (A) is a subset of this Flight Record (A-Plus), and this Flight Record (B) is the completion of "Flight Record A-Plus." However, Flight Record (B-Minus)" appears to be a subset of "B".
"B" and "B-Minus" are the ones with the indexed start time appearing to be later than the end time when listed in Fight Reader and both show about a 4.5 second time gap between the end of A-Plus and the beginning of B.**
Question 1: Can anyone verify I am correct in how the Flight Records are related?
Question 2: Can anyone please tell me how to join "B" to the end of "A-Plus" so I can reload it to Flight Reader and AirData?
Question 3: What accounts for B having an end time before the start time in Flight Reader?
Question 4: Why in the csv/aircraft log files, is the first entry in the Custom Update Time (first column) sometimes listed with a time of " " (Blank) in Airdata, or "00:00.0" in Flight Reader-aircraft-csv, or "7 pm" in Flight Reader-aircraft-log, while at other times in all cases the first line's entry will be an actual time that is just before the second line's timestamp?
Question 5: Is it odd/likely that the time gap in the split flight record files was caused by moving away from the Camera View screen, thereby interrupting the Flight Record?
The Bottom Line: Don't fly the RC controller with both Wifi and Auto Sync on or you may get very confused (or confusing) flight records.
Thanks ahead of time for the education and the assistance.
I hope wasting my morning on this mistake keeps someone else from having to waste theirs...
Mike
**The time gap may have been caused by leaving the Camera View screen momentarily, but I cannot tell yet. I saw in my Screen Recording that my fat thumb hit the View Files icon instead of the Auto Focus icon and that caused the RC controller to move away from the Camera View screen and to the "Home Screen" (black screen, pic of M3P, Connection guide, etc) until I switched it back.
