BIQU BX MCU protocol error

General Discussion
1

Basic Information:
Printer Model: BIQU BX
MCU / Printerboard: STM32H743/SKR SE-BX V2.0
klippy.log
klippy.log (78.6 KB)
an issue:
After update to klipper v.0.12 I have message like:

"Klipper reports: ERROR

MCU Protocol error

This is frequently caused by running an older version of the
firmware on the MCU(s). Fix by recompiling and flashing the
firmware.

Your Klipper version is: v0.12.0-114-ga77d0790
MCU(s) which should be updated:
CB1: Current version v0.11.0-122-ge6ef48cd
Up-to-date MCU(s):
mcu: Current version v0.12.0-114-ga77d0790

Once the underlying issue is corrected, use the ā€œRESTARTā€
command to reload the config and restart the host software.

mcu ā€˜CB1ā€™: Command format mismatch: query_adxl345 oid=%c rest_ticks=%u vs query_adxl345 oid=%c clock=%u rest_ticks=%u""

Recompiling and flashing the firmware is not working. Here is my config

remmina_CB1_BTT-CB1.local_20240225-063531
remmina_CB1_BTT-CB1.local_20240225-0635311105Ɨ774 32.7 KB

What is the issue?
On my second printer Ender 3 V2 all is working properly.

2

Hello @KAS !

As for the log, the CB1 version is still 0.11:

Your Klipper version is: v0.12.0-114-ga77d0790
MCU(s) which should be updated:
CB1: Current version v0.11.0-122-ge6ef48cd
Up-to-date MCU(s):
mcu: Current version v0.12.0-114-ga77d0790

For your post, you try to update the printer board, not the CB1.

1 Like
3

Please clarify your statement. Iā€™m not a native English speaker.

I have multiple klipper instances on CB1 board. One is BIQU BX. I posted message Iā€™m receiving after restarting firmware.

Iā€™m confused why there is a problem. On other instance (Ender 3 v2) this problem is not occur, despite similar version mismatch (mcu(stm32f103xe) Version: v0.11.0-304-gf7567a0d ) - (Host(aarch64, 64bit) Version: v0.12.0-114-ga77d0790 ).

I donā€™t know why in error message (biqu bx) we have:

"CB1: Current version v0.11.0-122-ge6ef48cd

Up-to-date MCU(s):

mcu: Current version v0.12.0-114-ga77d0790"

because klipper version is "klipper

v0.12.0-114-ga77d0790" it seams to be opposite.

Do you know what I should do?

4

You have to update Klipper on your CB1.

5

My Klipper is up to date!!

ā€œYour Klipper version is: v0.12.0-114-ga77d0790ā€

It seems to me that I have to update (Host MCU MCU-like functions on the SBC)

"MCU(s) which should be updated:

CB1: Current version v0.11.0-122-ge6ef48cd"

but I donā€™t know how!!

I re flashed my printer board via USB

Up-to-date MCU(s):

mcu: Current version v0.12.0-114-ga77d0790"

error persists

6

Just see here:

7

Thank you!!!
It can be done via KIAUH

now printer works:

mcu (stm32h743xx)

Version: v0.12.0-114-ga77d0790

Load: 0.00, Awake: 0.00, Freq: 400 MHz,

0

mcu CB1 (linux)

Version: v0.12.0-114-ga77d0790

Load: 0.03, Awake: 0.00, Freq: 50 MHz,

1 Like
8

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