In case you missed it, the big news is that a minimal Arduino core is up and working on the ESP32. There’s still lots left to do, but the core functionality — GPIO, UART, SPI, I2C, and … ...

The Java program can also read an Arduino program file and convert all the print calls in it to use the library, if you like. As you might expect, this requires some cooperation from your program.

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There is no setup needed to use the Arduino Wire library, as it comes installed in the Arduino IDE. You can find the library files by navigating to Arduino/Libraries/Wire, but it's not recommended ...