CCS/TMS320F28069M: How to input an array in GUI Composer?

Raisaat Rashid

Part Number: TMS320F28069M

Tool/software: Code Composer Studio

Hi,

Is there a way to change an array's elements in GUI Composer? I have an int array in my C code and in my GUI, I would like to change the array elements while it's running. I've noticed that an array can be outputted in a text box, but there is no way to input an array.

Thank You,

Raisaat Rashid

over 6 years ago

0 Patrick Chuong over 6 years ago

TI__Genius 16520 points

Hi Raisaat,

Binding to an array for write operating is something that we didn't have good support at the moment. However, you can use javascript to write the value.

i.e gc.databind.registry.getBinding('myarray').setValue([1, 2, 3])

Regards,
Paterick

0 Raisaat Rashid over 6 years ago in reply to Patrick Chuong

Prodigy 70 points

Hello Patrick,

I need be able to change the array values while the GUI is running. So I'm afraid hard-coding the array values in JavaScript would not help. I have two more questions:

1. Is there a way to input a string in a text box? I wrote some C code in CCS that works with a space-separated string of numbers like "1 2 3" and does some manipulation on it. I have a char *str pointer in my C code that is assigned that string, and I would like to tie that char pointer to a text box widget's value property. So when the GUI is running, I will input a string like "1 2 3" in that text box. I tried tying the char pointer to a text box widget's value property, but it doesn't work. I also tried tying evaluate['*str'] to the value property as described in http://processors.wiki.ti.com/index.php/GUI_Composer/Bind_Expressions but that is not working either.

2. Is there a way I can get the value of a toggle button widget's checked property in JavaScript? I want my JavaScript code to do something if the toggle button is enabled.

Any help would be highly appreciated.

Thank You,

Raisaat Rashid

0 Patrick Chuong over 6 years ago in reply to Raisaat Rashid

TI__Genius 16520 points

I am not suggesting you to hardcoded the value when setting the array, I was just showing you a snippet of code to set the array in JavaScript.

Here is the longer version of the snippet to set the array value:

templateObj.$.ti_widget_textbox.addEventListener('changed', e => {
    let value = e.detail.newValue;
    gc.databind.registry.getBinding('my_model.myarray').setValue(value.split(','));
});

Create a new javascript file using File | New | JavaScript File and paste the above code to after the line console.log("Application template has been stamped.");

Re 1: You can use the same approach as the integer array, but with the additional conversion from character to integer

templateObj.$.ti_widget_textbox2.addEventListener('changed', e => {
    let value = e.detail.newValue;
    gc.databind.registry.getBinding('my_model.mychararray').setValue(value.split('').map(c => c.charCodeAt(0)));
});

For the string, mychararray variable is an array, you can create another text box and bind the value to an array pointer to see the change.

Re 2:

templateObj.$.ti_widget_toggle_button.addEventListener('checked-changed', e => {
    console.log(e);
});

Regards,
Patrick

0 Patrick Chuong over 6 years ago in reply to Patrick Chuong

TI__Genius 16520 points

I also filed a JIRA to track the array writing issue (GC-1783). Once it is fixed, you don't need the workaround to set the value using JavaScript.

Regards,
Patrick

0 Raisaat Rashid over 6 years ago in reply to Patrick Chuong

Prodigy 70 points

Hi Patrick,

Thanks a lot for your help! Your suggestions worked!

Thank You,

Raisaat Rashid

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CCS/TMS320F28069M: How to input an array in GUI Composer?