Skip to content
Et puis petit à petit c’est devenu quelque chose d’important dans le monde du Raspberry Pi. Fortunately, there is WiringPi.In this post you’ll install WiringPi, get to know how to use it, and see many practical points which will be useful when you work with this library on your own projects.After this overview and starting guide, you’ll find many other WiringPi tutorials:This step will depend on the operating system you’ve installed on your Raspberry Pi.If you’re running Raspbian, WiringPi should already be installed!If you have a Raspberry Pi 4 board, the “Raspberry Pi Details” section will be a little bit different, but the functionalities of WiringPi remain the same.If you want to uninstall/re-install WiringPi on your Raspbian OS, just use Raspbian is the officially supported OS for Raspberry Pi, but there are many other Linux OSes adapted for the Pi, for example If you have a non-Raspbian OS you’ll need to install WiringPi from source, through the following steps.Executing those command lines will get the source code from git, fetch the latest update, and build WiringPi.Once you’ve executed all the steps, check if WiringPi is correctly installed with Make sure WiringPi is correctly installed by running Now, in order to use WiringPi in your Cpp code you need to know 2 things:WiringPi is not only a Cpp library. In a terminal, run:If you get something, then you have it already installed. The two jumper links next to the LED and button need to be present to use them.
NOTE: To compile programs with wiringPi, you need to add: -lwiringPi to your compile line(s) To use the Gertboard, MaxDetect, etc.
1.0
There is no-way to read the status of these resistors.These set the resistors to pull-up, pull-down and none respectively on This site is written using Wordpress and to make it operate, Wordpress sets 2 session cookes by default.
See this for a better understanding.. BCM is the pin number when using GPIO (aka BCM) numbering scheme, and wPi is the pin number when using the wiringPi's own pin numbering scheme. It will print 0 (low) or 1 (high).This performs an analog read from the given pin. Developed and maintained by the Python community, for the Python community. WiringPi is extendable and modules are provided to extend wiringPi to use analog interface devices on the Gertboard, and to use the popular MCP23x17/MCP23x08 (I2C 7 SPI) GPIO expansion chips, as well as module that will allow blocks of up to 4 74×595 shift registers to be daisy-chained together for an additional 32-bits worth of output as a single unit. 그 중에서 제일 많은 사용자들.. code (the devLib), you need to also add: -lwiringPiDev to …
Keep the hardware setup you’ve made with the previous code example, we’ll use it to check that the commands we write are correctly working!For all functions, we’ll need to give the number of the pin we want to use. a port expander. 2.44.3 Also supports i2c and SPI.This is an unofficial port of Gordon’s WiringPi library. In a terminal, run: $ gpio -v. If you get something, then you have it already installed.
WiringPiはRaspberry PiのGPIOを制御するためのC言語ライブラリですが、他の言語、例えばPythonやPHPなどからもこのライブラリにアクセスできるようになっています(具体的にはラッパが用意されています)。 ... pi@raspberrypi ~ $ sudo apt-get install libi2c-dev.
(starting from PIN_OFFSET >= 64) as if they were normal pins on the Pi.This example was tested on a quick2wire board with one digital IO Version 2.x of Gordon Henderson's Arduino-like WiringPi GPIO functions, wrapped up for Ruby. (You can have … With this library you can use many of the functionalities provided by the GPIO header: digital pins, SPI, I2C, UART, etc.Although there are many Python libraries for Raspberry Pi GPIOs, Cpp is quite a bit behind.
The button is connected to pin 0 and the LED to pin 1.
pinMode (6, 1) # Set pin 6 to 1 ( OUTPUT ) wiringpi. WiringPi-Perl Perl wrapped version of Gordon's Arduino-like WiringPi for the Raspberry Pi To do this:If you do not have GIT installed, then under any of the Debian releases (e.g. 2.44.1 When the button is not pressed (LOW), we power off the LED using digitalWrite(), but this time with LOW.Finally, we make the program sleep for 10 milliseconds between each iteration of the loop, so we don’t use too much CPU.Let’s see a few other basic functions here. Pour Gordon, au début, wiringpi GPIO était un jouet de hacker pour s’amuser avec le Pi. 2.44.0 wiringPiSetup # For sequential pin numbering # OR wiringpi. WiringPiとは.
It contains some useful command line utilities to help you see the state of your GPIOs and do some debugging.Before diving into the code, let’s check what pins you can use.Depending on the Pi you have (4, 3B+, 3B, …) you’ll get something like this:And to compare, here is the Raspberry Pi pinout (for more info, Here are some explanations for each column from this table:To recap, this table can help you get a quick overview of all pins, what number to use for each pin, and the current mode/state for a given pin.As a general rule, prefer using the BCM numbering convention over the WiringPi convention. Pour les usagers Python, noter bien le '2' suivant le 'wiringpi', cette nouvelle version est basée sur WiringPi 2 et incorpore la majorité des fonctionnalités de la version C.