Feature Request - Custom step servo spindle

[XYartlab]

I haven't used a step spindle yet, but when the control board has 6-8 axes, use $xx=4-8 to bind a specific axis as a step spindle, which offers more flexibility. I'm not sure how difficult this will be, but I plan to use RP2350B later to make a 6-axis board.
Last time I said the serial handwheel response was poor, so I tried making a DB15 handwheel plugin (0X87 report using formats like "MPG:2,X(/Y/Z/A/B/C),x1(/x10/x100)"), using PIO to read the encoder, then sending $J. At low speeds shake the handwheel, the handwheel moves step by step; at high speeds, the speed is mapped to different feeds. The results are quite good. Maybe I can open source the plugin and then improve it yourself, so grblHAL supports native handwheels for all MCUs.

[terjeio]

Do you have a use case or use cases for binding a configurable axis as a spindle? Adding a setting will increase complexity and interfere with a change I have in the pipeline.

Is your handwheel code is running on the controller or on a separate MCU?

[XYartlab]

Do you have a use case or use cases for binding a configurable axis as a spindle?
No. I don't know much about Step Spindle.

Is your handwheel code is running on the controller or on a separate MCU?
This is implemented using mpg_xxx.c plugins and modifying report.c files and other files, running on the controller. The plugin only starts working when axes are selected, so it hardly consumes extra performance.

[XYartlab]

Do you have a use case or use cases for binding a configurable axis as a spindle? Adding a setting will increase complexity and interfere with a change I have in the pipeline.

Is your handwheel code is running on the controller or on a separate MCU?

I have successfully changed the primary axis to use the $ configuration for selection. Now, it supports switching the primary axis by setting $SS to 0/1. It also allows for directional movement using commands like G1A30F400 when the primary axis is not enabled. Additionally, I have configured the system to use the $ setting to customize the names of axes 4-8, rather than using the default configuration at compile time. If the axis names are X/Y/Z, they act as secondary axes, emitting the same pulses as usual.