Update Prusa MMU3

[classicrocker883]

Description

Basically, since this was originally MMU2 stuff, I've updated to the correct MMU3 stuff

• The old .yaml file no worky. - src\feature\mmu3\mmu_hw\check-pce.sh
• Added a new error code that wasnt there before
• Updated error MSG_ | TITLE_, and DESC_ - language_en.h

Note

Originally, this code was taken from prusa3d/Prusa-Firmware/tree/MK3/Firmware/mmu2 + files included from the previous Firmware directory, updated last by #26635 as to work with MMU3.
However, this repo has support for MMU2S
The two share a common firmware - in their Releases, one asset is MMU2S_MMU3_FW3.0.3+896.hex
and from the README file:

# Prusa-Firmware-MMU
The currently supported models are:

- Original Prusa MMU3
- Original Prusa MMU2S

Maybe @eoyilmaz or @thinkyhead or someone else can review this,
but perhaps HAS_PRUSA_MMU2S is closer related to HAS_PRUSA_MMU3 - I mean according to @prusa3d thats what it seems like

---

Furthermore

I am unsure of a few things, such as the ButtonOperations
According to prusa3d/Prusa-Error-Codes, there has been some removed from enum class ButtonOperations in button_operations.h . Things like Skip was added, and MoreInfo removed. So I'm not so sure how to deal with this in the remaining files. I left MoreInfo, because some things do use it, I just dont know how or if it (still) works for the printer/MMU side, or was meant only for MMU2
Also, in the updated mmu-error-codes.yaml, it seems button options like Tune and such were dropped so I'm wondering how that works on the Prusa's side.

Requirements

• MarlinUI
• Prusa MMU3

Benefits

• Update/fix non-working URL
• Add/rename error codes to work with updated MMU3 firmware

Configurations

Related Issues

Just wanted to point this out

not sure if this needs change, but
apparently a couple things have been declared but are unused:

• two_choices
• button_op_middle

Marlin\src\feature\mmu3\mmu3_reporting.cpp: In function 'void MMU3::ReportErrorHookStaticRender(uint8_t)':
Marlin\src\feature\mmu3\mmu3_reporting.cpp:299:12: warning: variable 'two_choices' set but not used [-Wunused-but-set-variable]
       bool two_choices = false;
            ^~~~~~~~~~~
Marlin\src\feature\mmu3\mmu3_reporting.cpp:304:21: warning: unused variable 'button_op_middle' [-Wunused-variable]
                     button_op_middle = BUTTON_OP_MIDDLE(button_operation);
                     ^~~~~~~~~~~~~~~~

[Copilot]

Pull Request Overview

This PR updates the firmware support from MMU2 to MMU3 by aligning error codes, status messages, configuration checks, and button operations with the updated Prusa MMU3 specifications. Key changes include:

• Updated error titles and descriptions in language_en.h to match MMU3 error semantics.
• Revised configuration validation and register mappings in SanityCheck.h and registers.h.
• Updated button operation definitions and error code handling in buttons.h, mmu3_error_converter.cpp, and mmu3.cpp.

Reviewed Changes

Copilot reviewed 10 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
Marlin/src/lcd/language/language_en.h	Adjusted error message identifiers and descriptions
Marlin/src/inc/SanityCheck.h	Updated error messages to include MMU3 in configuration checks
Marlin/src/feature/mmu3/mmu_hw/registers.h	Fixed register mapping value formatting
Marlin/src/feature/mmu3/mmu_hw/progress_codes.h	Revised progress code definitions
Marlin/src/feature/mmu3/mmu_hw/errors_list.h	Updated error codes and comments
Marlin/src/feature/mmu3/mmu_hw/error_codes.h	Removed deprecated FILAMENT_CHANGE error code
Marlin/src/feature/mmu3/mmu_hw/buttons.h	Updated button operations, deprecating unused definitions
Marlin/src/feature/mmu3/mmu3_reporting.h	Adjusted enum type for command progress representation
Marlin/src/feature/mmu3/mmu3_error_converter.cpp	Modified error code mapping to reflect MMU3 changes
Marlin/src/feature/mmu3/mmu3.cpp	Removed obsolete error checks and added clarification comments

Files not reviewed (1)

• Marlin/src/feature/mmu3/mmu_hw/check-pce.sh: Language not supported

Comments suppressed due to low confidence (1)

Marlin/src/feature/mmu3/mmu_hw/buttons.h:44

• [nitpick] If the commented-out button operations (Load, Eject, Tune) are no longer needed, consider removing them entirely to avoid confusion.

//Load        = 5, //

[classicrocker883]

Reminder: Not sure on the status of Buttons::TuneMMU. in mm3/mm3.cpp
// TODO: May go unutilized, but it's here for now