CAS BACnet Stack Java Example

A basic BACnet IP server example written with Java using the CAS BACnet Stack

• Device: 389001 (Device Rainbow)
  • Aanalog_input: 0 (AnalogInput Bronze)

Architecture

This adapter follows the recommended separation pattern:

• CASBACnetStackAdapter.java - Pure interface wrapper around the native library.
• SimpleServerExample.java - The application's business logic implementation showing how to use the interface wrapper.

Quick Start for Customers

1. Copy Interface Files to Your Project

Copy these files to your project for the interface wrapper:

CASBACnetStackAdapter.java
ICASBACnetStackLibrary.java
BACnetConstants.java  
BACnetException.java

2. Implement Your Business Logic

Reference SimpleServerExample.java for patterns on how to:

• Initialize devices and add objects
• Implement callback handlers for property requests
• Handle message sending/receiving
• Store and manage property values

3. Basic Usage Pattern

// Create the interface wrapper
CASBACnetStackAdapter adapter = new CASBACnetStackAdapter();

// Get direct access to the library
ICASBACnetStackLibrary library = adapter.getLibrary();

// Use the library functions directly
library.BACnetStack_AddDevice(12345);
library.BACnetStack_AddObject(12345, BACnetConstants.OBJECT_TYPE_ANALOG_INPUT, 1);

// Register your own callbacks
library.BACnetStack_RegisterCallbackGetPropertyReal(yourCallback);

// Main processing loop
while (true) {
    library.BACnetStack_Tick();
    Thread.sleep(100);
}

Build Instructions

Using Maven

mvn clean compile
mvn mvn exec:java"

Requirements

• Java 8 or higher
• CAS BACnet Stack native library (DLL/SO file)
• Maven build system

Native Library Loading

The interface wrapper automatically detects your platform and loads the appropriate library:

• Windows x64: CASBACnetStack_x64_Release.dll
• Windows x86: CASBACnetStack_x86_Release.dll
• Linux x64: libCASBACnetStack_x64_Release.so
• Linux ARM: libCASBACnetStack_arm7_Release.so
• Linux x86: libCASBACnetStack_x86_Release.so

Make sure the library is in your system PATH or java.library.path.

Testing

1. Chipkin BACnet Explorer

Windows or Linux desktop application for discovering and polling BACnet servers.

Download for free Chipkin BACnet Explorer

2. Test from another computer:

# Send Who-Is to discover the Java BACnet server
echo "810400080120FFFF00FF" | xxd -r -p | nc -u <server-ip> 47808

Related Examples

For more advanced implementations, see these successful adapter examples:

• Python BACnet Server Example
• C# BACnet Server Example
• Go BACnet Server Example
• TypeScript BACnet Server Example
• Rust BACnet Server Example