MCU deprecated warning after Klipper update: missing STEPPER_STEP_BOTH_EDGE

[www-dot-com]

Hi,

After updating Klipper, I’m now getting the following warning:

MCU 'mcu' has deprecated code (it is missing feature 'STEPPER_STEP_BOTH_EDGE'). Recompiling and flashing is recommended
(MCU version '047b8fe-dirty-20230703_160308-mkspi', host version 'v0.13.0-557-g54c7b65d')

From what I understand, this indicates a version mismatch between the Klipper host and the firmware currently flashed on the MCU. The host expects support for STEPPER_STEP_BOTH_EDGE, which the existing MCU build does not include.

Before I proceed with recompiling and reflashing:

Is this warning purely informational, or can it affect performance and reliability (e.g. step timing precision or layer shifting)?

Is there an updated OpenNeptune MCU build that aligns with the current Klipper host version?

Is OpenNeptune still being maintained against upstream Klipper, or should users avoid updating the host beyond a certain version?

The printer still appears operational, but I’d prefer to understand whether running in this state is considered supported.

Thanks in advance for any clarification.

[halfmanbear]

Yes you definitely should flash the matching klipper MCU version, guide is here https://github.com/OpenNeptune3D/OpenNept4une/wiki#flashing--updating-klipper-mcus

[www-dot-com]

Thanks for the quick response and clarification, much appreciated.