Single General Purpose Input/Output (GPIO) Pin Motor Control Circuit

A system configured to operate a motor using a single general purpose input/output (GPIO) pin of a controller, the system comprising:

• a motor;
• a motor drive circuit coupled to the motor and configured to output one or more signals to activate the motor;
• a controller having a single GPIO pin and configured to output and receive one or more signals to control the motor via the single GPIO pin;
• and
• a control circuit coupled to the motor drive circuit and the controller, wherein the control circuit is configured to output one more control signals to control the motor driver circuit based, at least in part, on one or more signals received from the GPIO pin of the controller.

A method for operating a motor using a single general purpose input/output (GPIO) pin of a controller, the method comprising the acts of:

• receiving an input command at a GPIO pin of a controller;
• setting the GPIO pin of a controller to output one or more signals based on the received input command;
• detecting one or more input signals at the GPIO pin by the controller;
• and
• setting the GPIO pin based, at least in part, on the one or more input signals detected at the GPIO pin.