Display Issue - Axis Joystick + KeyPad - Control Board TU9001

[dariofil-star]

Using the SDK 4.0.0.12 in windows and C#, i am getting a strange behaviour with writing to KeyPad display.
Example;
Pressing F1, writes;
AxisKeyPad.SetDisplayTextRow(0, "Hellow", 1);
AxisKeyPad.SetDisplayTextRow(1, "World!", 1);

Pressing F2, writes;
AxisKeyPad.SetDisplayTextRow(0, "Foo", 1);
AxisKeyPad.SetDisplayTextRow(1, "Bar", 1);

Randomly, it works as expected.
Randomly, it doesnt.

When pressing F2, i receive;
Line 0: Foo
Line 1: World!
As if line 1 was never executed, but it was.

Then when i press F1, i receive;
Line 0: Hellow
Line 1: Bar
Line 1 was updated to previous execution. Weird.

Pressing F1 again would show;
Line 0: Foo
Line 1: World!

Something gets delayed/queued...

Debugging the code, all seems correct, code is executing to both line 0 and line 1, and leads me to beleieve there is a bug with display.

Restarting the app doesnt seem to fix the display issue. To fix it, i have to unplug the Keyboard USB and replug.
Then it would work as expected for a period of time, before it get scrambled again.

Any ideas as to what might cause this?

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[vivekatoffice]

Hi @dariofil-star ,
Could you provide a small sample based on the AXIS Joystick SDK examples examples that reproduce the issue?

Also, check if the AXISJoystickSDK doc file can help you catch the correct exception and help in troubleshooting the issue:

[dariofil-star]

Hi, there is no error/exception.
I can reproduce the issue with the included "DisplayKeypad" samples.

Video of issue
Notice the TEXT ROW 2 doesnt appear, and seems delayed. Seems to appear when the next command 'aKeyPad.SetDisplayContrast(5);' is executed.

i have tried removing/reinstalling the sdk. Unregistering the COM object and registering it.
Installing 32/64 bit sdk, and even having them side by side.

In all cases same result.
Using windows 11.

PS: In the video, i switched off the room light so the keyboard backlight can be seen changing.

[dariofil-star]

If video link doesnt work, copy paste it.

[vivekatoffice]

Hi @dariofil-star ,
I am able to download the video.
Adding the video in mp4 format for others reference:

825_out.mp4