DAQiFi Java API and Device Emulator

Java API for interacting with DAQiFi devices.

Getting started

• Java Development Kit (JDK) 17: Ensure that JDK 17 is installed on your system.

Build

# Generate protobuf classes, compile java and build a runnable jar
./gradlew build

Note: to force specific JDK installation, add the following to build.gradle (change path as needed):

compileJava.options.fork = true
compileJava.options.forkOptions.executable = 'C:\\Program Files\\Java\\jdk1.8.0_181\\bin\\javac.exe'

Run

Single emulator

java -jar ./build/libs/daqifi-java-api-0.3.0.jar 9760

Multiple emulators Note that the serial number and MAC address are deterministic and based on the port number.

# starts three device emulations
java -jar ./build/libs/daqifi-java-api-0.3.0.jar 9760 9761 9762

Useful Stuff

Useful Classes:

• Server can be run as a stand-alone Java application that emulates the DAQiFi SCPI Measure command. Data generated is a saw wave with a vertical offset equal to the channel and a period of 1 second.
• UdpResponder can be run as a stand-alone Java application that emulates the DAQiFi device discovery feature.

Third Party Dependencies

• Java 17
• Google Protocol Buffers

Generating Messages classes from .proto files:

1 At the project root run (Mac/Linux): * protoc --java_out src/ resources/WiFiDAQOutMessage.proto