Raspberry Pi Beginner Guide (wiringPi Tutorial for Linux BASH Shell and C, GPIO LED Blink)

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March 2022 update:
If you are using Raspberry Pi 4, you may receive an error when attempting to use the gpio command. Follow this guide to fix it: http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b/

Use the following command to compile the program if you get a bunch of 'undefined reference...' errors when attempting to compile the code:

gcc -Wall blink.c -lwiringPi -o blink
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This tutorial shows how to get started with Raspberry Pi GPIO using the wiringPi library. You will be shown the full process starting with a simple circuit build, Linux shell commands needed all the way to a fully-functional C program which will blink LEDs. I spend considerable time explaining how to safely deactivate GPIO ports after use to avoid damaging them.

Full code download: https://github.com/mheidenreich/wiringPiBasics

If you are just starting out with the Raspberry Pi this is the tutorial for you, even if you have not programmed in C before. However, making more advanced projects requires a deeper knowledge of C. In most cases I recommend Python, which is a lot more friendly to beginners. The gpio shell command always comes in handy.

0:00 Intro
0:45 The Circuit
2:15 Working with BASH Shell
4:22 Basic C Program
5:22 C Program Compilation Using gcc
7:08 C Program Improved
9:11 Running the Program in the Background
9:56 Using BCM Numbering in C
10:30 Wrap Up with Full Code

Disclaimer:
"Raspberry Pi" and the distinct logo are a trademark of the Raspberry Pi Foundation.

Music: Flames by Dan Henig, YouTube Music Library