STM32F756ZG with ST7796S LCD for Raspberry pi.

[Rio]

Is it possible to make the 4 inch LCD with ST7796S driver IC for raspberry pi work with STM32F756ZG using STMCubeIDE ?

If yes with what kind of code ?

[Andrew Neil]

Welcome to the forum.

To get started, please see: How to write your question to maximize your chances to find a solution.

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@Rio wrote:

 the 4 inch LCD with ST7796S driver IC for raspberry pi

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What display?

If you're talking about some product, please give a link

The ST7796S driver chip is not dedicated to any one host microcontroller/processor - it can be used by any host with a suitable interface:

https://docs.lvgl.io/master/details/integration/driver/display/st7796.html#:~:text=The%20ST7796S%20is%20capable%20of%20connecting%20directly%20to%20an%20external%20microprocessor%2C%20and%20accepts%208%2Dbit/9%2Dbit/16%2Dbit/18%2Dbit%20parallel%20interface%2C%20SPI

Use your favourite internet search engine to search for "ST7796S STM32"; eg,

https://www.google.com/search?q=ST7796S+STM32

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[Rio]

Hi, this is the link for the LCD with ST7796S driver IC which I'm using right now.

MHS-4.0inch Display-B - LCD wiki

I was trying to connect STM32F756ZG with this LCD via SPI by following these two guides but somehow it is not working.

Step-by-step Guide: How to use the LVGL v9 LCD drivers with STM32 devices — LVGL documentation

ST7796 LCD Controller driver — LVGL documentation

[Andrew Neil]

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@Rio wrote:

this is the link for the LCD with ST7796S driver IC which I'm using right now.

MHS-4.0inch Display-B - LCD wiki

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Thanks

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@Rio wrote:

somehow it is not working.

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"not working" gives us nothing to go on - you need to give more info.

Again, please see: How to write your question to maximize your chances to find a solution.