Secured backup feature for an embedded system

A method comprising:

• controlling, with a digital engine controller of a system, a controllable component of an engine of the system to control the engine of the system;
• ceasing controlling the controllable component of the engine with the digital engine controller;
• and
• responsive to ceasing controlling the controllable component of the engine with the digital engine controller, controlling, with an analog engine controller of the system, the controllable component of the engine to control the engine.

A system comprising:

• means for controlling, with a digital engine controller, a controllable component of an engine to control the engine;
• means for ceasing controlling the controllable component of the engine with the digital engine controller;
• and
• means for responsive to ceasing controlling the controllable component of the engine with the digital engine controller, controlling, with an analog engine controller, the controllable component of the engine to control the engine.