How to close a serial port in Rust using serialport crate?

Question

How do I close a serial port that I've opened? I can't see any hint about how to do this in the docs for serialport.

Answer 1

The trait Serialport itself does not offer such functionality¹.

However the only implementor is TTYPort and its doc states:

The port will be closed when the value is dropped.

If you look at the drop implementation, you can verify this behavior.

So, you can either use std::mem::drop directly or when the value goes out of scope the Drop implementation will be called (see the book about this chapter.).

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¹ I would suggest opening a issue on the GitHub repository and request the functionality.