You can refer to this manual: http://www.lcdwiki.com/3.5inch_16BIT_Module_ILI9486_SKU:MRB3503
and this driver: https://github.com/RT-Thread-Studio/sdk-bsp-stm32h750-realthread-artpi/blob/master/libraries/drivers/drv_spi_ili9488.c
You can refer to this manual: http://www.lcdwiki.com/3.5inch_16BIT_Module_ILI9486_SKU:MRB3503
and this driver: https://github.com/RT-Thread-Studio/sdk-bsp-stm32h750-realthread-artpi/blob/master/libraries/drivers/drv_spi_ili9488.c
can you pack a project for us to test?
I use the same test environment. The led is blinking. Please delete the old elf file before you build the project
Please download the latest rt-thread code.
Ask ILI9486 Driver