[FR] A map function for rules

[chromoxdor]

It would be very convenient to have a map function in rules.

Something like:

Map,<variableindex>,<inputvalue>,<fromLow>, <fromHigh>,<toLow>,<toHigh>
where "map" writes the data to a variable like "let"

[tonhuisman]

I would put this in the Math functions category, and make it compatible with the Arduino map(value, fromLow, fromHigh, toLow, toHigh) function (actually, calling that function with the arguments provided 😅), returning the mapped value to apply it where needed, like in a let assignment or an if condition 😉

[tonhuisman]

@chromoxdor I've added the map() function as a feature, can you please test with some scenarios? Build available from this Actions run

NB: You will need quotes around the function when used in a Let command, as it currently uses commas as an argument separator.

[tonhuisman]

Hmm, those quotes make me a bit unhappy, so we might need to use a different argument separator, probably a colon (:), like used with the string functions 🤔

[tonhuisman]

@chromoxdor I've switched a few things:

• Using existing function mapADCtoFloat(), similar to Arduino map() but supporting float values
• Using colon as the separator, as a comma causes too many parsing issues, and (confusing) quotes have to be used

[chromoxdor]

@tonhuisman Wow! That was fast.
I am in a bit of pre-Christmas stress at the moment, but I will happily test the function tonight.
Thank you very much!

[chromoxdor]

First test where successful.
A colon as separator is perfect and I really like it!
The closing bracket is not colored correctly, which I will look into ..... probably next year ;)