“Insufficient facts always invite danger.”
—Spock, Star Trek, Season 1, Episode 25 (“Space Seed,” 1968)
GPIO Peripherals Overview
The general-purpose input/output peripheral (GPIO) , also commonly known as the digital input/output peripheral (DIO), is the most commonly used peripheral in all embedded systems. The obvious reason is that the GPIO peripheral is how a microcontroller interacts with the external world around it. Whether the goal is to blink a simple LED by changing the voltage on the pin or to perform a more complex task such as multiplexing the pin to an internal ...