APM:Plane 2.78 released

This is a bug fix release for a number of important issues found in the 2.77 release.

The changes in this release are
Fixed sensor start-up on the APM1
I'm embarrassed to say that I didn't test the APM1 for the 2.77 release as my APM1 had died. It was a trivial fix, and the APM1 is working again in 2.78
Pixhawk Barometer fix
Fixed a potentially serious bug on Pixhawk if the board is flown in high temperature environments. If the board temperature gets above 65 degrees C then some boards would get bad barometric readings, thus giving bad altitude readings. This fix was a change in the GPIO settings on the SPI bus used to talk to the MS5611 barometer. Many thanks to Darrell Burkey for supplying the log file that found this bug.
Fixed LED behaviour on Pixhawk
The large 3 colour LED should now correctly display the failsafe and GPS status
Improved PX4 and Pixhawk compass calibration
We now run a strap calibration on every boot which improves compass accuracy by a small amount
Added RSSI_RANGE parameter
This allows you to scale your RSSI input to match your receiver
Fixed GPS health status in MAVLink
The GPS health bit will now show as unhealthy if the GPS does not have 3D lock. Thanks to Iskess for reporting this issue!
Also thanks to everyone who gave feedback on 2.77, much appreciated!

Issues with this release should be posted on the APM:Plane forum

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Comments

json February 2, 2014 at 5:45pm

2.78b working great in my 1900 skywalker 2014. Stab, Loiter, RTL and Auto (with land) works great. The RSSI also strangely is working again ie max values are now higher than the min.
json January 31, 2014 at 6:59am

I also noticed that with 2.78, the rssi values reported in minimosd is reversed..ie the 'no radio' link is at 1489 and the max is at 1085.
Gustav Kuhn January 31, 2014 at 3:21am

Eish, (sorry, that expression is reserved for South Africa), so glad I haven't flown my Talon in full auto yet....

Tridge, any time you need airplane tests done on APM1, I'll try to accommodate, I have three of them.

Hopefully try the new code this weekend.
Developer

Andrew Tridgell January 31, 2014 at 2:49am

Hi Jayson, yep, there was an 'oops' in 2.78 fixed in 2.78b thanks to sharp eyes from Valince on the patch.

Cheers, Tridge
json January 31, 2014 at 12:42am

ok this seems to have been fixed with 2.78b.. thanks!
json January 31, 2014 at 12:12am

hi tridge! after updating to 2.78, I cant seem to change the RC1_REV using APM planner 2.0. Changing it to "-1" gets 'written' but after a reboot, the old value of '1' returns. I was able to do this in 2.77.
Austin Suhler January 30, 2014 at 7:54am

Thanks guys, can't wait to start tuning my X-8! On that note, any idea when auto-tuning will be added? ;) Just kidding, great work guys!
Jack Crossfire January 30, 2014 at 12:14am

It's been 3 days since your last release. Slacker.
Darren Royle January 29, 2014 at 11:57pm

thank you for all your hard work...well done
Developer

Randy January 29, 2014 at 10:43pm

To resolve the same baro issue mentioned above we've pushed out ArduCopter-3.1.2-rc1 (a release candidate). After this has gone through some testing for a few days we will make it the official release for copter. More copter specific details/discussion at the end of the AC3.1 release thread.

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