GladeVCP - Cannot Activate Hal Widget on UI Start

since I cannot find how gladevcp is started from your ini file:

please state how you start gladevcp and with which command line

are you running gladevcp from a shell after Axis has started ?

- Michael

I use the same format as that from example given in the GladeVCP documentation:


3.3. Testing a panel

You’re now ready to give it a try (while LinuxCNC, e.g. Axis is running) it with:

gladevcp myui.ui


In my case, my file is called "cw.ui". So I use "gladevcp cw.ui".

Since you are starting gladevcp separate from Axis without embedding it (not GLADEVCP or EMBED_TAB lines) Axis happily runs your POSTGUI_HALFILE like any other HAL file.

Since gladeVCP didnt run yet, it hasnt created the HAL component yet, which is why the setp cw.something fails.

solution1: use GLADEVCP or EMBED_TAB ini options as outlined in the manual

solution2: if you want to run gladevcp from outside axis, comment out the POSTGUI_HALFILE and run gladevcp like so:

gladevcp -H mahalcmdds.hal cw.ui

- Michael

BigJohnT wrote:

And there I was making the big assume mistake that he was embedding the GladeVCP panel into Axis otherwise why would he have the postgui file...

John

Users are usually shy when reporting issues.. looks like config files are private parts

-m

OK, so I'm not clear on the explanation of the issue - but regardless of that, let me try to explain what I'm trying to do. It would be very helpful to get your advice on the best way to go about doing what I'm ultimately trying to do.

I'm building a coil-winding machine. I need to control the speed and acceleration of two stepper motors. The motors would be running at fairly low RPM, but I need the ability to set the speeds of the motors independently and then once set, I need a way to start both motors at the same time with one button. The critical aspect of this application is the RATIO of speed between the two motors. So, my intention is to set the speed of motor 1 and have the app calculate the speed of motor 2 based upon a manually entered ratio.

It's clear from the documentation that this could be done with the Hal components (stepgen), but here's where I need your advice. Would it be better to build a panel that runs separate from Axis or are there some features in Axis that could be used to make development of the app easier or quicker?

I've attached a screen-shot of what the app might look like to make it more clear what I'm trying to do.

Thanks John. Yes, I've looked through those tutorials some, but I see you have updated them as well. So, I need to go through them again. I'm pretty new to Linux so it's a whole new game for me. I'm used to developing in C, C++ and Assembler - this is a little different.....but a lot of fun. So, I have a bit of a learning curve.

Regarding the CAM RPM spinbox versus a Label. Yes, I thought of that, but there could be instances where I might want to enter a specific RPM for the CAM motor and then use a ratio to calculate the Bobbin RPM (sort of in reverse). So, I would need the ability to manually enter values for either one or the other depending on what I'm trying to do. So, in that case, a label wouldn't work.

I like the idea of using a stand-alone panel, but it doesn't really matter either way. I'm willing to do whatever is quicker and easier just to get the functionality I need. Right now, I just have a prototyping configuration with a set of motor drivers and two motors from Probotix. My first goal is to get the app built and the motors turning somewhere close to what I need.

The real challenge is going to come from attempting to build the coil machine itself. I'll be working with tolerances as small as .0001 inch, which I'm not sure can be achieved in a home workshop - at least with the tools I have available. I do have a benchtop CNC (12X24) from IMService. It works well, but really wasn't intended for cutting parts in steel or aluminum to such close tolerances.

Anyway, I'll go through the tut's - I'm sure I'll have lots more questions.

Thanks