System console TCL API

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Is it possible to interface to system console via TCL API from external apps (e.g. GUI based C++ app)? Are their any tutorials?

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No, it is not possible to use Tcl API to create your own applications. If I understand it's structure correctly, System Console is actually a Java application with embedded Tcl interpreter.

If you wish to use functionality that System Console provides, you are basically stuck using traditional IPC methods between your System Console TCL script and your external application, like the TCP/IP method Dave mentioned.

Depending on your GUI application requirements (maybe you are starting from scratch and don't have to do that much), you can use the dashboard API's. I have used it to produce diagnostic interfaces for lab technicians to use, for example.

http://www.altera.com/education/demonstrations/qsys/system-console/system-console-demo.html