Download and Install

WiringPi is maintained under GIT for ease of change tracking, however there is a Plan B if you’re unable to use GIT for whatever reasons (usually your firewall will be blocking you, so do check that first!)

If you do not have GIT installed, then under any of the Debian releases (e.g. Raspbian), you can install it with:

sudo apt-get install git-core

If you get any errors here, make sure your Pi is up to date with the latest versions of Raspbian:

sudo apt-get update
sudo apt-get upgrade

To obtain WiringPi using GIT:

git clone git://git.drogon.net/wiringPi

If you have already used the clone operation for the first time, then

cd wiringPi
git pull origin

Will fetch an updated version then you can re-run the build script below.

To build/install there is a new simplified script:

cd wiringPi
./build

The new build script will compile and install it all for you – it does use the sudo command at one point, so you may wish to inspect the script before running it.

GCC가 깔려있는 상태에서 wiringPi를 설치

예제화일중에 blink.c가 보이길래

gcc -o blink blink.c -lwiringPi

sudo ./blink

이렇게 하면 0번핀(보드상에서 11번핀)에 LED를 연결하니까 깜박거린다.

gpio readall <- GPIO핀 확인할때 쓰임