Pixhawk Boot Issue

Blue Robotics Software
1

Hi all, I used QGC to reflash the Pixhawk firmware during the heavy lifting retrofit. The QGC firmware update process appeared successful, printing “Upgrade Complete”. However, when I try to power up the ROV, the Pixhawk FMU and I/O B/E lights remain solid amber and QGC has no connection.

2

@asjb,

Are you able to connect with the ROV using 192.168.2.2:2770/system?

I believe that you can reboot the Pixhawk from that page.

Regards,
TCIII AVD

3

The firmware is not running, try to flash it again. Note that reflashing the firmware is not a neccesary step in the first place for a heavy retrofit.

4

We slightly modified our frame definition, so we needed to re-flash. As I mentioned, QGC says it’s successful in flashing but the aforementioned B/E lights are solid amber and we are unable to talk to it. We have tried re-flashing with original firmware with the same result however.

5

Is there an SD card in the autopilot?

6

yes

7

Can you make a video of the flash process and lights at boot?

8

Jacob, unfortunately I can’t take video in the lab. However, I can describe the FMU and I/O B/E lights.

  1. during flashing process: FMU is blinking amber and I/O is solid amber
  2. after flash power off and on: FMU- blinks amber for a few seconds and then goes solid amber. The I/O light blinks amber for a second and then goes solid amber.
10

Problem resolved: looks like there was an issue with the compiler not fully building so the binary was incomplete. Thanks for you help everyone.

11

wow. Thanks for letting us know.

12

Hi @asjb I encountered the same issue. Could you specify what was the problem and how to solve it please? Thanks!

13

Hi @lucasyu777, welcome to the forum :slight_smile:

When you’re finished flashing with QGC, is it detected correctly if you re-connect it to the computer, instead of connecting it straight to the vehicle? If it’s not detected as a vehicle I’d recommend trying to flash again.

14

Hi, thanks.

I solved the problem by connecting to a qgc on a windows machine. It turns out the problem was with my QGC in ubuntu system. When I open the software, the following message showed in the terminal:

qt.positioning.geoclue2: Unable to start the client: "org.freedesktop.DBus.Error.AccessDenied" "Agent rejected 'QGroundControl' for user '1000'. Please ensure that 'QGroundControl' has installed a valid QGroundControl.desktop file."

Have you had similar experiences before?

Thanks

1 Like
15

Glad to hear it! :slight_smile:

Huh, interesting…

I haven’t, although I also don’t believe I’ve tried flashing from Ubuntu before. I’ll make a note to check that when I’ve next got some testing time.