Difference between revisions of "WiringPi-Python for RK3399"

Revision as of 06:07, 14 November 2018

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1 Introduction to WiringPi for Python

The wiringPi for Python utility is an implementation of wiringPi in Python. It can be used in Python programs to access hardware such as GPIO/I2C/SPI/UART/PWM etc. It is a popular and powerful utility.
FriendlyELEC has ported the wiringPi for Python utility for all existing FriendlyELEC-RK3399 based boards: NanoPi M4, NanoPi NEO4 and NanoPC-T4.

Current version: 2.44
WiringPi项目主页: http://wiringpi.com

wiringPi的C语言版本，请前往这里查看: WiringPi for RK3399/zh

2 支持的OS

• FriendlyCore
• FriendlyDesktop

3 支持的开发板

• NanoPC T4
• NanoPi M4
• NanoPi NEO4

4 wiringPi for Python在T4/M4/NEO4上的安装

通过ssh，或者串口终端进入开发板的命令行，然后根据你所用的Python版本，在命令行下安装:

4.1 Python3安装方法

apt install git python-dev python-setuptools python3-dev python3-setuptools swig
wget https://pypi.io/packages/source/s/setuptools/setuptools-33.1.1.zip
unzip setuptools-33.1.1.zip
cd setuptools-33.1.1
python3 setup.py install
wget http://112.124.9.243:8888/wiringpi/friendlyelec-rk3399/wiringpi-2.44.4-py3.6-linux-aarch64.egg
easy_install wiringpi-2.44.4-py3.6-linux-aarch64.egg

4.2 Python2安装方法

wget https://pypi.io/packages/source/s/setuptools/setuptools-33.1.1.zip
unzip setuptools-33.1.1.zip
cd setuptools-33.1.1
python2 setup.py install
wget http://112.124.9.243:8888/wiringpi/friendlyelec-rk3399/wiringpi-2.44.4-py2.7-linux-aarch64.egg
easy_install-2.7 wiringpi-2.44.4-py2.7-linux-aarch64.egg

5 wiringPi for Python示例

将一个Matrix - LED通过连接至开发板，引脚的连接对应如下：

接下来我们用wiringPi实现一个LED闪烁的例子,
在代码中使用数字7来操作Pin7这个引脚:

5.1 Python语言示例

创建一个python源文件：

vi led.py

然后键入如下代码:

import wiringpi as wpi
import time
 
wpi.wiringPiSetup()
wpi.pinMode(7, 1)
 
while True:
    wpi.digitalWrite(7, 1)
    time.sleep(1)
    wpi.digitalWrite(7, 0)
    time.sleep(1)

运行：

python3 led.py

看到LED灯一闪一闪的，就表示成功了，如果你使用的是python2，请将python3改成python2。

5.2 C语言的示例

请前往这里查看: WiringPi for RK3399/zh

6 更新日志

6.1 2018-11-10

首次发布