Configuring Linux systems to support IoT application development

Configuring Linux systems to support IoT application development

The Internet of Things (IoT) refers to the embedding of physical devices, vehicles, and other objects with electronics, sensors, software, and network connections, thereby enabling these Objects are able to collect and exchange data. During the development process of IoT applications, it is essential to configure the Linux system to provide the necessary development environment and tools. This article will introduce how to configure a Linux system to support IoT application development and provide some code samples for reference.

1. Install the Linux system

First, make sure that a suitable Linux operating system, such as Lubuntu, Ubuntu, Debian, etc., has been installed to facilitate subsequent development and configuration work.

2. Install the necessary tools

1. Install the compiler

Commonly used programming languages ​​for IoT application development include C, C, Python, etc., so The corresponding compiler and interpreter need to be installed.

Install C and C compiler:

sudo apt-get update
sudo apt-get install build-essential

Install Python interpreter:

sudo apt-get install python3

2. Install version control system

Version control The system can help developers manage code versions. Commonly used version control systems include Git, SVN, etc.

Install Git:

sudo apt-get install git

3. Install development tools

Developing IoT applications requires the use of some common development tools, such as text editors, IDEs, etc. .

Install vim editor:

sudo apt-get install vim

Install VS Code:

sudo apt install snapd
sudo snap install code --classic

3. Configure the network environment

1. Configure the wireless network card

Internet of Things applications usually need to connect to a wireless network, so a wireless network card needs to be configured.

View the wireless network card list:

iwconfig

Edit the /etc/network/interfaces file and add the following content:

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
    wpa-ssid <wifi_ssid>
    wpa-psk <wifi_password>

Restart the network service:

sudo systemctl restart networking

2. Configure network proxy

If you need to connect to the cloud platform or other network resources through a proxy server, you can configure a network proxy.

Edit the /etc/environment file and add the following content at the end:

http_proxy="http://<proxy_server>:<port>"
https_proxy="http://<proxy_server>:<port>"

4. Install the IoT development framework

Commonly used frameworks for IoT application development include Node-RED , Mosquitto, etc., you can choose the appropriate frame for installation according to your needs.

Install Node-RED:

sudo apt-get install npm
sudo npm install -g --unsafe-perm node-red

Install Mosquitto:

sudo apt-get install mosquitto mosquitto-clients

5. Code example

The following is a simple Python code example for monitoring MQTT messages and processing:

import paho.mqtt.client as mqtt

# 连接成功回调函数
def on_connect(client, userdata, flags, rc):
    print("Connected with result code " + str(rc))
    # 订阅主题
    client.subscribe("topic/test")

# 消息回调函数
def on_message(client, userdata, msg):
    print(msg.topic + " " + str(msg.payload))

# 创建客户端实例
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message

# 连接MQTT代理服务器
client.connect("mqtt.eclipse.org", 1883, 60)

# 循环监听消息
client.loop_forever()

6. Summary

This article introduces how to configure a Linux system to support IoT application development and provides some code samples for reference. By properly configuring and installing the necessary tools and frameworks, developers can more easily develop IoT applications. I hope this article will be helpful to you in your IoT application development.

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