Wrapper command for hal_ready() in haltcl?

I'm having a go at writing a userspace Modbus component in haltcl, and can't find how to call the C layer's hal_ready() function - the "hal" Tcl command doesn't seem to expose it. As a result, LinuxCNC just waits for the component, even though it's running. I realise I can run loadusr without -W, but I'd like to try to do this "properly".

Similarly, should userspace components call hal_exit() before they end?

I get the impression from further reading that haltcl is really just intended for use at setup time, allowing programmatic constructs like calculations and loops in machine definitions. However, is there any reason not to use it for building a non-realtime component? From my testing so far it seems to work just fine - you can set up and tear down signal connections and set values that are received in LinuxCNC via HAL - and there seem to be other components out there written in scripting languages. Tcl's event handling, exceptions, channels (serial), and SQLite binding are making this fairly straightforward to put together.

sorry ... but in hal is quite hard to make a if statement for example (hard when compared with c/c++ ... ) ... but if you are usual to Tcl you can try ... write my rtuserver.com = 10min .... understand the right use and sequence of Lcnc command 3 year... and he's still learning ...
So I do not think that the language to be used is the main problem.

Regards
Giorgio

I not read these post .... hal if clause ....

Any how using Tcl instead C/C++ maybe a good exercices and nice ... I do not think I will ever have time for this ..

Regards
Giorgio