Writing polish characters to a file on SD card

Projects Programming
1

How can I write a polish characters to a file on SD card?
I have something like this:

char user[] = "Michał";
File file = SD.open("aa.csv", FILE_WRITE);
file.println(user);

And in a file I've got: Michał.

2

I think the problem lies in the character set that the IDE applies to read/write the file. no sure it that can be changed...

3

What program are you trying to open the file with? What character set does it use? It should probably be UTF-8.

To make sure that the compiler uses UTF-8 as well, you can add

#pragma execution_character_set("utf-8")

at the top of your sketch, or add the u8 prefix to your string literals:

char user[] = u8"Michał";

Pieter