Error finishing flash operation when programming STM32H745I-DISCO in STM32CubeIDE

[YashaswiniMN]

Hi folks,
I am working with an STM32H745I-DISCO board and trying to run example projects as well as TouchGFX-generated applications.

• Board: STM32H745I-DISCO

• IDE: STM32CubeIDE (latest version)

• ST-LINK: Firmware updated to latest version

• Programmer: I can flash using STM32CubeProgrammer without issues (LED blink works fine)

When I try to flash projects such as the LTDC_Display_1Layer (CM7) example or a TouchGFX application, I consistently encounter the following error in STM32CubeIDE (screenshot/log attached).

What I have already tried:

1. Full chip erase in STM32CubeProgrammer

2. Checked Option Bytes (RDP = 0xAA, nDBANK set correctly, BOOT address = 0x08000000)

3. Tried connect under reset in debug config

4. Updated ST-LINK firmware

5. Verified that CM7 project is selected (not CM4)

6. Rebuilt/cleaned project

7. Verified that other small examples can flash correctly

Could you please guide me on what might be causing the flash operation to fail only for these larger / graphics-based projects, while simpler ones like LED blink work fine?

[LouisB]

Hello @YashaswiniMN,

Have you tried to close and re-open CubeIDE or even restart the computer ?

BR,

[YashaswiniMN]

Hi @LouisB 

We tried closing and re-opening CubeIDE, but the same error remains.

Then we used CubeProgrammer to perform a full chip erase and re-flash the firmware. However, the error still persists, and now the MCU appears to be locked, preventing us from flashing it anymore.