Number to hex string conversion in rules

[abial]

Hi,

I'm using a dummy device to manage a counter of events. I also need to send this count to an external endpoint using SendToHTTP - BUT it needs to be encoded as a hexadecimal number... I can't find any way to do it in rules.

In a sense, I need the reverse of 'strtol' or at least the reverse of 'ord'

Any help appreciated!

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Andrzej

[TD-er]

Hmm the other way around is already present, but I can only think of very elaborate ways to convert to hex.

So unless you want to create very elaborate (thus slow) rules, I guess it is a nice feature request.

[abial]

I was afraid you would say so ...
I'm thinking about maybe using substring creatively - if it's possible to declare a string literal (var) somewhere, like "01234567890ABCDEF" and to concatenate substrings (or chars), then I could do some math juggling to create the hex strings piecemeal - but I suspect that's not possible either?

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Andrzej

[TD-er]

That's what I meant with "very elaborate rules"

I think a new feature supporting this should be something like the other "Standard Conversions" (See System Variables page)

I will see what I can think of...

[TD-er]

It was really easy to do, most of the needed time was in updating the system variables documentation.

See: https://github.com/letscontrolit/ESPEasy/pull/3296

[abial]

Ah, this is great! it saves me a lot of trouble going the micropython route (python irq handling and button debouncing is not trivial).

Thank you!

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Andrzej