Semantic linting/human readable error parsing

[thegoodhen]

Describe the request

There are some common beginner mistakes that are semantic (runtime state dependant) than syntactic, such as:

• not using pinMode before calling digitalWrite
• not initializing Serial before using it
• using delays inside ISRs

and many others, mostly related to third party libraries, such as

• setting a buffer of LEDs on a Neopixel strip, but never actually sending the data to the LEDs
• setting a display buffer, but never actually applying it...
• not initializing sensors before attempting to read values from them

It might be useful to build a mechanism that allows library authors to write custom semantic rules, with warnings being sent back into the language server, so that these common mistakes are highlighted.

On a related note, it would be great to introduce a system that would provide beginner friendly documentation on the most common bugs, returned by the linter.

Are there any plans to implement this? I think it would be a gamechanger for education.

Describe the current behavior

Currently, the linter output is more useful for highly experienced users and the language server mostly cares about syntax, but isn't context/semantic aware.

Arduino Language Server version

N/A

Arduino CLI version

N/A

Operating system

Windows

Operating system version

N/A

Additional context

No response

Issue checklist

• I searched for previous requests in the issue tracker
• I verified the feature was still missing when using the latest version
• My request contains all necessary details