Red led B/E fmu

elik500 · March 6, 2023, 8:28pm

Hi,

Running the latest ardupilot version, using pixhawk 32 v5, the FMU B/E red led is blinking…

Any ideas why?

nvarona · March 21, 2023, 2:57pm

Hello, the same thing happens to me on my pixhawk 6c, the red led comes out and not how to remove it, any light information on what to do?

cctsao1008 · December 20, 2023, 2:03pm

I meet the same issue on my pixhawk 6c mini as well.

nvarona · December 21, 2023, 8:58pm

I don’t know what to do, I’ve tried everything, and what do we do?

Yuri_Rage · December 21, 2023, 9:03pm

No firmware or bootloader loaded maybe? Try using DFU mode to do an initial firmware flash.

Loading Firmware onto boards without existing ArduPilot firmware — Copter documentation

dkemxr · December 21, 2023, 9:51pm

Did you try using QGroundControl to flash Ardupilot?

nvarona · December 22, 2023, 9:41am

Yes, I have also tried different formulas, and nothing, everything seems to be correct, but the red LED keeps flashing. According to what I have read, there is an issu on Ardurover’s GitHub, that it could be a bug of the incorrect LED being turned on, and that the programmer made a mistake in which LED to turn on. But I’m not sure if I understood it correctly… I’ll look for the link in git to share with you. Let’s see if we can fix it.

I opened this yesterday:

github.com/ArduPilot/ardupilot

Pixhawk 6c FMU B/E Led Assignment and Rover 4.4 stable

opened 12:55PM - 20 Dec 23 UTC

nvarona-ied

Rover

**IF YOU DON'T REMOVE THESE FOUR LINES, THEN YOUR REPORT WILL BE CLOSED AUTOMATI…CALLY** Questions and user problems should be directed at the forum (http://discuss.ardupilot.org) _**Please be very sure you have found a bug when opening this issue**_ If there was a previous discussion in the forum, link to it ## Bug report **Issue details** _Please describe the problem_ After installing the stable Ardurover 4.4 firmware, I have the B/E FMU red LED blinking, is there any way to remove the red LED blinking? or know what happens to him. Someone commented in another ISSUU that the color of the LED was assigned incorrectly and the blue one would have to be turned on, but that it was a code issue. Everything is correct ? **Version** _What version was the issue encountered with_ ArduRover 4.4 stable **Platform** [ ] All [ ] AntennaTracker [ ] Copter [ ] Plane [ X ] Rover [ ] Submarine **Airframe type** _What type of airframe (flying wing, glider, hex, Y6, octa etc)_ **Hardware type** _What autopilot hardware was used? (Pixhawk, Cube, Pixracer, Navio2, etc)_ PIXHAWK 6C **Logs** _Please provide a link to any relevant logs that show the issue_

And this is the one I found:

github.com/ArduPilot/ardupilot

Pixhawk 4 Fmu B/E Led Assignment

opened 09:19PM - 06 Nov 20 UTC

closed 12:13AM - 17 Aug 21 UTC

K1rdro

## Bug report Original Issue Discussion in Forums: [https://discuss.ardupilot.…org/t/pixhawk-4-fmu-b-e-led-is-blinking-red/38642/2](https://discuss.ardupilot.org/t/pixhawk-4-fmu-b-e-led-is-blinking-red/38642/2 ) **Issue details** Pixhawk 4 FMU Act (Activity) LED and FMU B/E (Bootloader/Error) LED are swapped in firmware. The red FMU B/E LED flashes during normal activity, and the blue Act LED responds during bootloader & errors. **Version** ArduPlane V4.0.7 (f0d8ca5e) **Platform** [ ] All [ ] AntennaTracker [ ] Copter [X] Plane [ ] Rover [ ] Submarine **Airframe type** Fixed-Wing V-Tail **Hardware type** Holybro Pixhawk 4 **Logs** N/A

amilcarlucas · December 22, 2023, 9:56am

Please remove the first four lines of you github issue.

cctsao1008 · December 24, 2023, 1:05pm

Change followings

setup for BoardLED2

define HAL_GPIO_A_LED_PIN 90
define HAL_GPIO_B_LED_PIN 92

to this one

setup for BoardLED2

define HAL_GPIO_A_LED_PIN 92
define HAL_GPIO_B_LED_PIN 90

in this file
ardupilot\libraries\AP_HAL_ChibiOS\hwdef\Pixhawk6C\hwdef.dat

Rebuild the firmware, and flash it to FC

The issue will be fixed.

BR CCTSAO1008

Metalworker · September 21, 2024, 10:30pm

Curious when specifically people are seeing this blinking E/B LED.
I’m in the process of calibrating my rover with a Holybro 6c. Everything seems fine, communication via telem and USB. Yet I have a double flash B/E led. Maybe this is normal since it’s still being calibrated, and disarmed. Will this error prevent me from arming?
I tried to update to Rover4.5.6, and MP hung, lost COM ports, when it was searching.