MCU Protocol error after update v0.12.0-401-g383b83d78

General Discussion
1

Basic Information:

Printer Model:
MCU / Printerboard: BIQU Manta m8p v1.1 & BIQU EBB36 v2.1
Host / SBC: BIQU cb1
klippy.log
logs-20241216-122436.zip (184.5 KB)

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

…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: v0.12.0-401-g383b83d78-dirty
MCU(s) which should be updated:
mcu: Current version v0.12.0-401-g383b83d78
EBBCan: Current version v0.12.0-401-g383b83d78
cb1: Current version v0.12.0-401-g383b83d78
Up-to-date MCU(s):

Once the underlying issue is corrected, use the “RESTART”
command to reload the config and restart the host software.

mcu ‘EBBCan’: Unknown command: query_adxl345

2

See MCU Protocol error caused by running an older version of the firmware

3

The Klipper and MCU firmware versions are the same: v0.12.0-401-g383b83d78

4

Problem solved

my OLD script for flashing EBB: make_flash_klipper_EBB.sh

#!/bin/sh
# -- coding: utf-8 --

cd ~/klipper
cp .config.ebb .config
make clean
make

python3 ~/katapult/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u b5a82905ae95

NEW script for flashing EBB:

#!/bin/sh
# -- coding: utf-8 --

cd ~/klipper
cp .config.ebb .config
make menuconfig
cp .config .config.ebb
make clean
make
python3 ~/katapult/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u b5a82905ae95

Similar changes were made to reprogram other controllers and everything started working as before.