Software reset for Arduino

[philjynx]

...

[gumtown]

depends on the Arduino CPU type.

for the Teensy LC or 3.1 it is

SCB_AIRCR = 0x05FA0004;

which will initiate self destruct and reboot the hardware from a cold start.

Would a register/ peripherals flush routine be more elegant ?

another option is a power off reset button (normally closed PB).

If you are using a Nano, you are out of luck, unless you flash it with the UNO boot-loader, and use a WDT routine + the hardware reset input pin.