Running an external LCD using ST7789H2 driver using STM32F429 Discovery board

[Shankar_Mohan]

Hi Team,

I am a complete beginner. I am working on a project using STM32F429 DISC1 to drive an external LCD using LTDC (parallel RGB interface) using the ST7789H2 driver. Currently, I have a working code for running the LCD that comes with the discovery board using the ILI9341 driver. How can I port this code to work with an external LCD using ST7789H2 with the same interface?(RGB parallel).

Thanks

[mƎALLEm]

Hello @Shankar_Mohan and welcome to the community,

You can refer to the application note AN4861 "Introduction to LCD-TFT display controller (LTDC) on STM32 MCUs" as it may help you.

You need to read the ST7789 datasheet and implement its driver accordingly.

But are you sure ST7789 is controlled over LTDC not over SPI interface?

See these threads:

https://community.st.com/t5/stm32-mcus-touchgfx-and-gui/st7789-interface-with-stm32f429-using-rgb565/td-p/273797

https://community.st.com/t5/stm32cubeide-mcus/st7789-not-working/td-p/572930

 

[AScha.3]

Hi,

i am using TFT with  ST7789 , but is on SPI connected;

so how is yours connected ?