Demo of RTI DDS toolkit for LabVIEW
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This document summarizes a presentation about demonstrating the RTI DDS Toolkit for LabVIEW. It discusses what LabVIEW is and why it is used, provides an overview of the RTI DDS Toolkit for LabVIEW product, and demonstrates how to publish shapes data from a LabVIEW program to control a Lego Mindstorms EV3 robot using DDS. The implementation details and current limitations of the toolkit are also outlined.
![ImplementaYon
Details
• Cluster
Equivalent
IDL
struct
MyTypeName{
string<1024>
Text;
//@key
long
I32_Num;
long
long
I64_Num;
unsigned
short
U16_Num;
float[4]
Sgl_Array;
innerclusterType
innercluster;
};
struct
superinnerClusterType{
double
Dbl_Num;
ultrainnerClusterType
ultrainnerCluster;
};
struct
ultrainnerClusterType{
short[2]
I16_Array;
};
struct
innerclusterType{
float
Sgl_Num;
boolean
Boolean;
superinnerClusterType
superinnerCluster;
};](https://image.slidesharecdn.com/demoofrtiddstoolkitforlabview-timowen-londonconnextconference-141022125516-conversion-gate02/85/Demo-of-RTI-DDS-toolkit-for-LabVIEW-11-320.jpg)
Demo of RTI DDS toolkit for LabVIEW
- 1. DDS Cluster of Interest: Demo of RTI DDS Toolkit for LabVIEW Tim Owen EMEA TAM, RTI
- 2. Tim Owen – RTI EMEA TAM • Technical Account Manager for RTI • Based in RTI EMEA Office (Milton Keynes) • Main Interface for Channel / Distributors • Experience in embedded systems, SoIware Defined Radio and DSP for over 20 years • Worked at RTI for 2½ years
- 3. LabVIEW • Anyone know what it is? • Anyone here currently using it? – Personally or as a Company? – How are you using it? – Why do you use it – what’s the advantage(s)?
- 4. So, what is LabVIEW? • A graphical programming plaWorm • Blocks are “funcYons” or logic statements (while loops) • Data-‐driven programming: – A block (piece of code) is executed as soon as all its inputs are available. – All blocks with their inputs available at the same Yme will be run in parallel • Provides hugely accelerated producYvity – Rapid Prototyping – Scalability
- 5. So, what is LabVIEW? (cont.) • Used extensively in Test Measurement/Control Apps – Also Avionics, Comms, Radar, AutomoYve, Oil & Gas • Solves some architectural system issues – NI provides modular scalable hardware (PXI & CRIO based) – Signal Analysis & Analog I/O – Scales from design to test and from small to large systems. • Huge ecosystem (Alliance Partners) and Customer Base!
- 6. So, what is LabVIEW? (cont.) • Every LabVIEW applicaYon (Virtual Instrument or VI) consists of block diagram (behaviour descripYon) and “Front Panel” for Control I/O – Using Drag ‘n’ drop building blocks • `
- 7. Why use DDS and LabVIEW? • Create DDS applicaYons using graphical drag ‘n’ drop blocks in LabVIEW – zero coding !! • Easily interfaces the “contained” LabVIEW world (VIs) to the external world – Using the DDS tenets we all know and love! J – Enables integraYon with Java, C/C++, C# apps • Use the RTI DDS Toolkit for LabVIEW product – Developed and maintained by RTI • Opens new markets and possibiliYes for DDS – Extensively used throughout the World • Huge Ecosystem & Customer base
- 9. RTI DDS Toolkit for LabVIEW 10/22/14 © 2012 RTI • COMPANY CONFIDENTIAL 9
- 10. What is this LabVIEW DDS Toolkit demo? • Show a Shapes Publisher in LabVIEW • Control a Lego Mindstorm EV3 Robot – Using standalone Java DDS ApplicaYon (Laptop) – Interfacing to LabVIEW environment using the “RTI DDS Toolkit for LabVIEW” Add-‐on – Lego Mindstorm support for LabVIEW provided by NI
- 11. ImplementaYon Details • Cluster Equivalent IDL struct MyTypeName{ string<1024> Text; //@key long I32_Num; long long I64_Num; unsigned short U16_Num; float[4] Sgl_Array; innerclusterType innercluster; }; struct superinnerClusterType{ double Dbl_Num; ultrainnerClusterType ultrainnerCluster; }; struct ultrainnerClusterType{ short[2] I16_Array; }; struct innerclusterType{ float Sgl_Num; boolean Boolean; superinnerClusterType superinnerCluster; };
- 12. What is this LabVIEW DDS Toolkit demo? (cont.) • Shapes Publisher
- 13. NxT What is this LabVIEW DDS Toolkit demo? (cont.) EV3 naYve comms via Bluetooth (not DDS) Java GUI ApplicaBon that uses DDS to send commands and display received output from the EV3 NI Environment Apps generated in LabVIEW DDS enabled LabView (VI) ApplicaYon that reads / writes data across the EV3 link • Control a Lego Mindstorm EV3 Robot
- 14. LimitaYons • Currently 32-‐bit Windows • FuncYonality … – Reading by polling only – Reduce supported data types • Only one top-‐level key. – LabVIEW imposed constraints • For instance, no complex-‐type arrays.
- 15. Product Roadmap • Feedback about API – Is current API enough for most use cases? • LabVIEW RT – VxWorks porYng for CompactRIO board • Reading without polling – Integrate LabVIEW Events? – Waitsets?
- 16. What’s next ? • Try it! • LabVIEW available as free 45-‐day trial – hup://www.ni.com/download-‐labview • Connext Professional as free 30-‐day trial – If you don’t already have it! hup://www.rY.com/downloads/index.html • Where can I get the RTI DDS Toolkit Add-‐on? – Developed and maintained by RTI – Available through NI only (for Windows only) • Via the VIPM in LabVIEW – It’s Free – even for a permanent license !!! J