Raspberry Pi Beginner Guide (wiringPi Tutorial for Linux BASH Shell and C, GPIO LED Blink)
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Update, March 2024:
WiringPi has been updated to support the latest Raspberry Pi 4/5, but it is not included with default Raspberry Pi OS image. You can use the following commands in your Raspberry Pi Terminal to get WiringPi installed:
git clone https://github.com/mheidenreich/wirin...
cd wiringPiBasics
chmod u+x update_wiringpi.sh
sudo ./update_wiringpi.sh
The above will give you access to the 'gpio' command and you will be able to compile C programs that use wiringPi library, for example:
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/wirin...
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