CCS/TMS320F28027F: GUI data binding using *.js file

Thomas Hecht

Part Number: TMS320F28027F

Tool/software: Code Composer Studio

hello

I modified an existing InstaSpin GUI. I'd like to change the following variable from the Motor control API gMotorVars.Speed_krpm by using the GUI.

when I change the Value in the CCS (Debug mode) the displayed value in the GUI changes. When I change the Value in the GUI nothing happens in CCS.

I must have made some mistake in the index.js file - how is the binding done?

function Divide1000_multiplyQ24(oldValue)

{
       var divide = oldValue/1000;
       var result = divide*(Math.pow(2,24));
       return Math.floor(result).toString();
}

....

document.addEventListener('gc-databind-ready', function()
{

gc.databind.registry.bind('widget.ti_widget_numberbox_speedref.value',
        {
            SpeedRef_krpm: 'my_xds.gMotorVars.SpeedRef_krpm'
        },
        function(value) {
            return(MyUtil.DivideQ24_multiply1000(value.SpeedRef_krpm));
        },
        function(value){
           //return Math.round(MyUtil.Divide1000_multiplyQ24(value));
           return Math.round(Divide1000_multiplyQ24(value));
        }
    );

over 5 years ago

0 Whitney Dewey over 5 years ago

TI__Guru 54175 points

It looks like the field that displays gMotorVars.Speed_krpm has the Read Only box checked in the Widget settings. Even if you made it writable, I suspect it'll just be overwritten by a new calculated value. If you're looking to change the motor speed, I believe you're supposed to change the SpeedRef_krpm field. Or am I not understanding what you're trying to do?

Whitney

0 Thomas Hecht over 5 years ago in reply to Whitney Dewey

Expert 1080 points

Hello, Whitney,
Thanks for the answer, unfortunately I can't find a checkbox for Read only, there is only disable (see scree shoot). What I have in mind is actually exactly the same as it is done in the Motor InstaSPIN universal GUI. I want to be able to set the speed for the motor, but I also want to be able to see the current value of the CPU. So that the value of the GUI changes when I change the value in the CCS debugger and vice versa. Currently only the direction debugger GUI works (changes made with CCS are displayed correctly in the GUI, but not vice versa).

Translated with www.DeepL.com/Translator (free version)

best regards

Thomas

0 Whitney Dewey over 5 years ago in reply to Thomas Hecht

TI__Guru 54175 points

Did you intend to post a screen shot? It doesn't appear to have worked.

Whitney

0 Thomas Hecht over 5 years ago in reply to Whitney Dewey

Expert 1080 points

Hi Whitney

here is the sreen soot

0 Thomas Hecht over 5 years ago in reply to Thomas Hecht

Expert 1080 points

FragenTI_GUIdocx.docx

0 Whitney Dewey over 5 years ago in reply to Thomas Hecht

TI__Guru 54175 points

Okay, sorry--when I saw that you were using the F28027F, I figured you were working with GC v1 and totally missed that you were using a modified version of the GC v2 GUI. I'm not seeing anything wrong with the js you shared. I'll loop in someone from the GC team to see if they have any ideas.

Whitney

0 Patrick Chuong over 5 years ago

TI__Genius 16520 points

Hi Thomas,

Can you try binding the number box widget directly to the gMotorVars.SpeedRef_krpm variable instead of creating an object with the property SpeedRef_krpm?

For example:

gc.databind.register.bind(
'widget.ti_widget_numberbox_speedref.value',
'my_xds.gMotorVars.SpeedRef_krpm',
function(value) {
return(MyUtil.DivideQ24_multiple1000(value.SpeedRef_krpm));
},
function(value) {
return Math.round(Divide1000_multipleQ24(value));
}
);

Regards,
Patrick

0 Thomas Hecht over 5 years ago in reply to Patrick Chuong

Expert 1080 points

Hello, Patrick,
thanks for your answer. Now it works the other way round, i.e. I can set values via the GUI, but no CCS program changes are displayed in the GUI.The GUI reports an error "Identifier not found" right after start and shows NaN. Do I have to select anything else for the property value in the *.gui file?

best regard

Thomas3482.FragenTI_GUIdocx.docx

0 Patrick Chuong over 5 years ago in reply to Thomas Hecht

TI__Genius 16520 points

Hello Thomas,

In the getter function, remove the SpeedRef_krpm prefix.

i.e

function(value) {
return(MyUtil.DivideQ24_multiple1000(value));
},

Regards,
Patrick

0 Thomas Hecht over 5 years ago in reply to Patrick Chuong

Expert 1080 points

DHello Patrick,

The direction from CCS program to G6170.FragenTI_GUIdocx.docxUI still does not work, please see attached file.

0 Patrick Chuong over 5 years ago in reply to Thomas Hecht

TI__Genius 16520 points

Thomas,

There are few things that you need to follow when adding JavaScript file:

If you are adding the file manually, it needs to be a the root of the project. i.e in the app folder. When the file is added using the Designer's menu, it is automatic placed in the app folder.
The app needs to be run once to auto generate the index.html file to include the javascript file. If you add the file by hand, make sure you have run the app once in the Designer to include the file in index.html
MyUtils.js needs to be loaded before your index.js file. The designer will add files alphabetically in the index.html, so MyUtils.js might be loaded after index.js.

Can you also put a breakpoint in the chrome debugger at the MyUtil = { } assignment and make sure it is hit before it is used by the getter or setter? This will ensure that the file is properly loaded.

Patrick

0 Thomas Hecht over 5 years ago in reply to Patrick Chuong

Expert 1080 points

Hi Patrick

thanks for supporting, I'm sorry to keep bothering you further,

I still get the message about the unkonw function. I had a look at the index file, to me it seem to be ok.7360.FragenTI_GUIdocx.docx

0 Patrick Chuong over 5 years ago in reply to Thomas Hecht

TI__Genius 16520 points

Hi Thomas,

From the word doc that you have included, I see the error message complains about the function 'MyUtils.DivideQ24_multiple1000 is not a function'. The function is defined as DivideQ24_multiply1000 (with a 'y') and probably the Javascript function is calling DivideQ24_multiple1000 (with an 'e').

Regards,
Patrick

0 Thomas Hecht over 5 years ago in reply to Patrick Chuong

Expert 1080 points

Hi Patrick,

Sorry, I don't understand what you mean by "y" and "e". I tried to keep debugging, but got stuck there.

best regards

Thomas

3872.FragenTI_GUIdocx.docx C2000Ware_MotorControlSDK_InstaSPIN_GUI.zip

0 Patrick Chuong over 5 years ago in reply to Thomas Hecht

TI__Genius 16520 points

Hi Thomas,

You have a typo in the calling function. See the image below.

Regards,
Patrick

Code Composer Studio™︎

Code Composer Studio forum

CCS/TMS320F28027F: GUI data binding using *.js file