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by wyager 4342 days ago
The Arduino IDE puts all compile-time stuff in /tmp/, which gets erased on reboot.

And yeah, Teensy is great, but their USB code is a bit... out of spec sometimes. Also, the Teensy 3 in the Arduino IDE is (was?) kind of a nightmare. They have a gigantic C++ object that emulates all the registers on an AVR, and translates operations on those "registers" into operations on ARM MMIO.