2020-08-26 07:08 PM
Hello,
Here's my enviroment;
STM32F769Ni Custom board : SDRAM(IS42S32800G-6BLI) + NOR Flash(M29W128GL70ZA6E) + 800 * 480 TFT LCD(RGB-24Bit parallel interface) + FreeRTOS (CMSIS_V2) + TouchGFX
It takes more then 20 second until LCD screen is displayed after power on.
Here's what i tried
1) changed setting to use internal flash for image(from external nor flash) -> same problem, takes too long until image is displayed on lcd.
2) disabled FMC Bank1 (refer to ST Document (AN4861 : LCD-TFT display controller(LTDC) on STM32MCUs)4.6.1 : Disable FMC bank1 if not used) -> still slow
3) copy image to frame buffer directly instead of using gfx generated widget -> in this case, lcd displayed quickly.
Is there somthing I need to check / setting to try for this problem or document I can refer?
Thanks.