MCU Protocol error on update to klipper v0.11.0-226-g0245073c

SaltyPaws · June 18, 2023, 4:09am

All, Everything was working great on my V0, until I upgraded to v0.11.0-226-g0245073c. I upgraded all MCUs to the same and I continue having this error. Please let me know how to proceed.

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: v0.11.0-226-g0245073c
MCU(s) which should be updated:

Up-to-date MCU(s):
mcu: Current version v0.11.0-226-g0245073c
EBBCan: Current version v0.11.0-226-g0245073c
rpi: Current version v0.11.0-226-g0245073c
display: Current version v0.11.0-226-g0245073c

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

mcu ‘display’: Unknown command: buttons_ack

klippy(1).log (32.8 KB)

What have I tried?:

Mcu protocol error followed instructions in this post
Update all klipper MCU firmware x2

SaltyPaws · June 18, 2023, 4:11am

moonraker(6).log (32.5 KB)
Also adding moonraker log

SaltyPaws · June 18, 2023, 4:29am

I followed this V0Screen flashing guide:

github.com

VoronDesign/Voron-Hardware/blob/master/V0_Display/Documentation/Setup_and_Flashing_Guide.md

## V0 Display Flashing Instructions:

1) Connect the board to the host Raspberry Pi via USB.

2) This step depends on if your board has firmware on it or not already:

	a) If you have a pre-flashed board:
		-Install the boot jumper and reset the board. This will put the board into DFU mode.
	
	b) If you have an unflashed board:
		- The MCU default's to DFU mode if there is no other firmware installed.
		
	 - confirm the board enters DFU mode in step 4
	
3) Connect to your host raspberry pi via SSH

4) Run `lsusb` from the command prompt
	- Make sure you see an STM32 in DFU mode listed
	
5) Run `dfu-util --list` from the command prompt

This file has been truncated. show original

SaltyPaws · June 18, 2023, 4:42am

Solved it. The Github documentation on the V0 screen is wrong. It works with the follwoing settings in menuconfig advanced options:

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MCU Protocol error on update to klipper v0.11.0-226-g0245073c

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