Interacting with Raspberry GPIO

The objective of this tutorial is to develop a program interacting with Raspberry PI GPIO.

• Prerequisites
• Install RPi.GPIO
• First program

Prerequisites

• Set up a Raspberry PI 3
• Install Python

Install RPi.GPIO

pip install RPi.GPIO

First program

This program just setup pin 12 as Output with initial value High. Then I toggle the value to Low. Finally, I toggle to initial value High.

#!/usr/bin/python
import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BOARD)

GPIO.setup(12, GPIO.OUT, initial=GPIO.HIGH)

print(GPIO.input(12))

GPIO.output(12, GPIO.LOW)

print(GPIO.input(12))

GPIO.output(12, GPIO.HIGH)

print(GPIO.input(12))

See source here

Output:

1
0
1

See more here