If your board supports it, the Zephyr RTOS and build tools support building your firmware for a Linux binary target too :) even has a neat RPC protocol to test

If your board supports it, the Zephyr RTOS and build tools support building your firmware for a Linux binary target too :) even has a neat RPC protocol to test the firmware on your computer rather than on the board. Probably too much for a Teensy tho, but it is supported: https://docs.zephyrproject.org/latest/boards/arm/teensy4/doc/index.html https://docs.zephyrproject.org/latest/boards/arm/teensy4/doc...