Documentation of dataflash log format?

[foobarbecue]

Hi all.

Is there a document somewhere that tells what each of the fields in the dataflash log represent? I know you can go to "log browse" in MissionPlanner, but I'm looking for the equivalent of https://pixhawk.ethz.ch/mavlink/

Aaron

[foobarbecue]

Never mind, I just found it. https://code.google.com/p/ardupilot-mega/wiki/APM_Parameters

[foobarbecue]

Nope, turns out that was just parameters, not log fields. Hopefully this exists somewhere?

Aaron

[Jason Short]

Best to look in Log.pde for now.

Jason

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[Andrew Tridgell]

Hi Aaron,

The meaning of the format characters is in
libraries/DataFlash/DataFlash.h, like this:

/*
Format characters in the format string for binary log messages
b : int8_t
B : uint8_t
h : int16_t
H : uint16_t
i : int32_t
I : uint32_t
f : float
n : char[4]
N : char[16]
Z : char[64]
c : int16_t * 100
C : uint16_t * 100
e : int32_t * 100
E : uint32_t * 100
L : int32_t latitude/longitude
M : uint8_t flight mode
*/

The meanings of the fields is supposed to be clear from the header
fields in the FMT message, although it doesn't specify units currently.

If you'd like to create a wiki page for it and explain it in more detail
that would be great!

Cheers, Tridge

[foobarbecue]

Ah, thanks, it's pretty easy to follow in there. Maybe I'll get the time to wikifiy this as per Tridge.

[foobarbecue]

Just found https://github.com/diydrones/MissionPlanner/blob/master/dataflashlog.xml ! Now that is useful.

[Randy Mackay]

     You'll find that file in your AP Mission planner directory as well.  That file is required for 2.9.1b (and earlier) versions of AC before Tridge and Michael made the dataflash logs self-describing.  So going forward we won't be maintaining that file although it's probably mostly correct at the moment.

-Randy

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From: foobarbecue <fooba...@gmail.com>
To: drones-...@googlegroups.com
Sent: Sunday, May 5, 2013 2:16 PM
Subject: Re: [drones-discuss] Re: Documentation of dataflash log format?