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KM L.1
Associate III
August 31, 2020
Question

Integrating Parallel RGB LCD with STM32 controller

  • August 31, 2020
  • 16 replies
  • 3110 views

As we have Parallel RGB LCD and we tried integrating with STM32H743 controller and using touchGFX we are trying to display the image but nothing is displaying on the LCD so what may be the issue?

This topic has been closed for replies.

16 replies

MM..1
Super User
September 2, 2020

No i mean only in your code , when your display have too config interface connected SPI or I2C, you send some commands and set this.

KM L.1
KM L.1Author
Associate III
September 2, 2020

Ok but I'm not configuring anything using SPI or I2C.

​

​How can I check the framebuffers in stm32 cubeide??

Martin KJELDSEN
Principal III
September 3, 2020

There should be a memory window where you can just point to the address of the framebuffer you're interested in and look at the raw data.

KM L.1
KM L.1Author
Associate III
September 3, 2020

I cross verified the LTDC GPIO configuration also.

if i give(0, 255, 255) - Red color is displaying on lcd but from touchgfx it is (255, 0, 0).

Can you please look into this and let me know if any configuration is wrong. I'm struggling from two days .

Thank you

MM..1
Super User
September 3, 2020

Your project is configured to 16bit touchGFX framebuff this equal to RGB565. You need understand how this work, in memory dont exist 255 0 0.

And read this https://community.st.com/s/question/0D50X0000C9dxj6SQA/how-to-change-touchgfx-framebuffer-to-big-endian