PoKeys57CNC HAL component

I'm afraid that the 56U is not supported. Or at least I did not add explicit support for this.

I do not know if the 56 series supports the PulseEngine V2 which I'm using to control the motion. You could try though.

In the source code there is a check , if the device is a 57CNC, which only logs a warning.
And there is another check if the "external pulse generator" is used.

Excerpt from the documentation

Pulse engine v2 supports two different pulse generator modules:
- Internal: similar to basic Pulse engine, limited to 25 kHz pulse frequency at 3 channels, uses built-in circuitry and pins
- External: new in v2, limited to 125 kHz pulse frequency at 8 channels, requires external circuitry to deserialize the data to pulses

I did some more reading of the documentation of the 56/57 boards. The internal pulse engine should be available and usable. With the limitations mentioned before.
Or if you have the, now discontinued, CNC addon board, it should be equivalent to the 57CNC board.

I will remove the checks on the component, since the way I operate the PoKeysLib is not specific to a particular board.