RobertoA wrote:

> Rs232 electric level in not necessary
> Conversion ttl-rs232 is not necessary
> Gpio port of Rasperry is connected directly with other 3v3 electronic
> boards

ok

> The part for me obscure, is how to use Raspberry uart port for
> communication via tcp ethernet line

That's the fairly easy part, as several people have linked different ways

> The second big question is how to use for a 'virtual com port' on
> Windows side

There are several bit of software that do half of what you want, but not
all of it e.g. look at com0com,  maybe com2tcp does actually do what you
need?



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