encoder Z auto config error

[jschoch]

net spindle_encoder-rpm rio.spindle_encoder-rpm pyvcp.spindle_encoder-rpm

this auto generated config line in custom_postgui.hal seems to throw a pin not found error

Also the docs for vin_quadencoderz don't' seem up to date or document all the options.

my config is:

{
            "type": "vin_quadencoderz",
            "pullup": true,
            "name": "spindle_encoder",
            "function": "spindle-index",
            "scale": 600.0,
            "pins": {
                "a": "33",
                "b": "30",
                "z": "29"
            }
        },