A GPIO controller device has some number of GPIO pins. These pins can be physically connected to peripheral devices. GPIO pins can be configured as data inputs, data outputs, or interrupt request inputs. Typically, a GPIO pin is dedicated to a peripheral device, and not shared by two or more devices.
Hereof, what is meant by GPIO?
A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit board whose behavior—including whether it acts an input or output—is controllable by the user at run time. GPIOs have no predefined purpose and are unused by default.
How many GPIO pins are there on Raspberry Pi?
GPIO Pinout. The Raspberry Pi offers up its GPIO over a standard male header on the board. Over the years the header has expanded from 26 pins to 40 pins while maintaining the original pinout.
What is RPI GPIO?
RPIO is an advanced GPIO module for the Raspberry Pi. PWM via DMA (up to 1µs resolution) GPIO input and output (drop-in replacement for RPi.GPIO) GPIO interrupts (callbacks when events occur on input gpios) TCP socket interrupts (callbacks when tcp socket clients send data)