2025-11-13 2:20 AM
Hello,
I'm working on a custom STM32H7S7L8 board with this display
https://newhavendisplay.com/fr/2-4-tft-lcd-ips-high-brightness-display/
Here the schematic of the connection in 8 bit mode and clock three
The backlight and display are working but I get a glitch image when i try to fill the display.
with this code i can see the display turning off and on so the command are working
Below the whole project zip
LCD_Fill(0xFFFF, 0, 0, 10, 10);
HAL_Delay(1000);
ST7789H2_DisplayOff();
LCD_Fill(0xFFFF, 0, 0, 10, 10);
HAL_Delay(1000);
ST7789H2_DisplayOn();
Does someone have a idea to make this work
Thanks
2025-11-13 3:26 AM
Hello,
Did you modify this line in MPU config or it was generated by CubeMx:
MPU_InitStruct.SubRegionDisable = 0x0;
Normally it should be 0x87 not 0x0!
2025-11-13 3:28 AM - edited 2025-11-13 3:30 AM
Also these lines?:
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;