unable to get output in 3.5"tft spi display having ili9488 driver

[charu_mathi]

I am currently working on a project using the STM32F401RE Nucleo board interfaced with a 3.5-inch TFT SPI display (ILI9488 driver). I am facing an issue where the display does not show any output, even though the backlight turns on and the code uploads successfully without errors.

I have already checked the SPI connections, power supply, and display initialization code, but the screen still  remains blank. I would like to kindly request your guidance or any reference materials/libraries that can help me correctly configure and test the display with STM32CubeIDE.

If possible, I would appreciate help with:

• Correct SPI configuration for ILI9488

• Required GPIO pin mapping (DC, RESET, CS, etc.)

• A working example code or initialization sequence

• Any known issues or recommended libraries for STM32F4 + ILI9488

Your support will greatly help me continue my project. Thank you

[AScha.3]

The SPI settings...i can tell you later, at home.

But first: i found, some waiting time after release reset line to TFT is needed; so try with hal_delay(50) , before sending anything to the ILI .

[AScha.3]

SI setting...is for ILI9344, so check: same (or not) for 9488 ...

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here a lib, if your lib has problems:

https://github.com/RobertoBenjami/stm32_graphics_display_driver

 

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[charu_mathi]

Dear Sir/Madam,

Thank you for your response. As requested, I am sharing the configuration details used in my STM32F401RE setup with the 3.5” SPI TFT Display (ILI9488). PIN CONFIGURATION

VCC - 3.3V , GND - GND , TFT_CS - PA4 (A2), TFT_DC - PA2 (D1), TFT_RST - PA1 (A1), TFT_SCK- PA5(D13)

, TFT_MOSI - PA7 (D11), TFT_MISO - PA46(D12), LED - 3.3V

BELOW I ADD SCREENSHOT OF MY IOC