What is gpiopin?

A GPIOPin is a software interface that allows a user to access and control a physical input/output (I/O) pin on a microcontroller or single-board computer (SBC) such as the Raspberry Pi. GPIO stands for general-purpose input/output and describes a type of digital signal that can be used not only for sending and receiving data but also for controlling external devices like LEDs, sensors, and motors.

The GPIOPin interface allows a user to set the direction of the pin (input or output), read its current state, and write a new state. It may also provide additional functionality such as edge detection or interrupt handling.

By manipulating GPIO pins, programmers can interface their microcontrollers or SBCs with a wide range of hardware devices, without the need for specialized interfaces or drivers. This makes GPIO pins a popular choice for DIY electronics projects, as well as more professional applications like industrial automation and robotics.