screen shaking
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‎2022-03-03 10:36 PM
Hi,
I use TouchGFX 4.16, CubeIDE, STM32F429ZI.
Screen shake occurs when text is written on the screen and when a slider is selected.
In the case of text, it is designed to be written every second.
I added a reference to "https://community.st.com/s/global-search/screen%20shake", but it didn't work.
/*
* Initialize TouchGFX
*/
hal.initialize();
​
hal.setTouchSampleRate(5);
hal.setFingerSize(20);
hal.setDragThreshold(20);
​
How can I get rid of screen shake?
​
Best regards,
​
​
​
​
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- Labels:
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STM32CubeIDE
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STM32F4 Series
-
TouchGFX
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‎2022-03-03 11:18 PM
What MCU are you using? Does it have data cache like H7 series?
​
Look at discussion: ​https://community.st.com/s/question/0D53W00001Gl5lJSAR/stm32h743-weird-screen-flickering
​
Enabling cache and configure MPU properly gives huge speed improvement and I have no screen problems since then.
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‎2022-03-03 11:55 PM
Thanks for your reply.
I use STM32F429ZI.
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‎2022-03-04 12:03 AM
According to ST it has MPU, so try to see how set it up an use​ it for LTDC. May me it will help.
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‎2022-03-04 8:17 AM
F429 is slow how size is lcd how rgb 888 or 565. Try slow down display clk or less rgb mode
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‎2022-03-06 9:21 PM
Thank you for your response.
LTDC settings are attached image files.
