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Anomaly with Current and Baro readings (caused a hard land)

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@sergbokh wrote:

Hi Everyone,

yesterday I had an incident flying my copter: hovering in Loiter at about 1 meter it descended quickly and hit ground.
After log investigation I found the reason of that drop: barometer wrongly reported that the altitude increased rapidly, so the Loiter controller parried this with a descend.

There was no any altitude change. Copter was in several meters from me and hovered very stable. AccelZ values also does not show any moving.

It was almost 30-minutes flight and inspecting baro readings of whole flight I see very smooth and adequate baro values. Exept the one in the end of the flight that caused the hit.

So I attempted to figure out what affected Baro. And I found another anomaly in my log right at the same time - there is a rapid peak of current up to 23A logged. I believe this peak is not real because there is no voltage drop as it usually happens:

Moreover, I recall that when I armed my copter at the begin of the flight I saw that it was a 6-7 Amps of current when motors were not rotating at all! (I'm using MOT_SPIN_ARM = 0)
It was the same anomaly with curent and baro readings:

Long story short: I have no idea what was that and how can I prehen that to happen it the future.

Any thought are very appreciated!

Bin log https://www.dropbox.com/s/sb27a9dflypen6i/00000029.BIN?dl=0

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