Python

Secondary develop Elastel Gateways by Python

Python is a powerful and easy-to-learn scripting language, well-suited for edge IoT development. All Elastel gateways come with a built-in Python 3 interpreter, allowing developers to quickly write and run Python scripts without additional setup.

Typical use cases like:

• Serial and network communication (e.g., Modbus, MQTT, TCP/UDP)
• Data acquisition and local processing
• Controlling LEDs, buzzers, relays, etc.
• Edge computing and cloud integration

1. Supported Models

The following Elastel gateways come with Python 3 pre-installed:

• Industrial Raspberry Pi series: EG500, EG410, ElastBox400
• ARM-based IIoT Gateway series: EG324, EG324 Lite, EC212, EC211

Python development is supported out-of-the-box across all these models.

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2. "Hello World" Example

Create a basic Python script named hello.py:

# hello.py
print("Hello, Elastel Gateway!")

Step 1: Create the Script

Use any text editor to create a file called hello.py with the content above.

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Step 2: Upload the Script to the Gateway

Option A: Web Terminal Upload

ElastPro has prebuilt a web terminal tool on webUI, which also support upload files via web.

1. Access the ElastPro webUI http://192.168.1.1 (Check Getting Started for more details)
2. Go to System -> Terminal
3. Use Upload Files to upload hello.py

Files uploaded here will be stored in /tmp, which is cleared on reboot. Move to /home/admin for persistence:

sudo mv /tmp/terminal/hello.py /home/admin/

Option B: MobaXterm / Xshell (Recommended)

1. Connect via SSH to the gateway
2. Drag and drop the file into the SFTP panel to upload it to /home/admin/

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Step 3: Run the Script

Log in via SSH or Terminal and execute the following:

cd /home/admin
python3 hello.py

Output:

Hello, Elastel Gateway!

3. Recommendations Practices

• Use built-in interfaces (e.g., serial ports, GPIO, MQTT, Ethernet) for development
• Configure /etc/init.d/rcS for startup service or use crontab for scheduled runs
• Ensure scripts use UNIX-style line endings (LF) to avoid execution errors

4. Appendix Tables

EG324 Peripheral Resource	Device Interface Name
COM1	/dev/ttyAMA0
COM2	/dev/ttyAMA1
COM3	/dev/ttyAMA2
COM4	/dev/ttyAMA3
SYS LED Indicator	/dev/led
SYS2 LED Indicator	/dev/led2
Buzzer	/dev/buzzer
Ethernet Port 1	eth0
Ethernet Port 2	eth1

Note

For other models, please contact Elastel support or refer to models hardware manuals for Peripheral Interface tables.

• Website: https://www.elastel.com
• Support Email: support@elastel.com

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