Latest Arduino Core version not working with Nucleo-144 F767ZI

[MarwanOSayed]

Since core update 2.11, upload shows completed successfully but any uploaded sketch (custom code or even from basic examples) compiled with core 2.11 wouldn't work on the board. Tested on multiple units. Rolling back to 2.10.1 fixed it for all the units.
Erasing the flash completely through STM32CubeProgrammer did not solve the problem but it confirms that an upload indeed happens as the flash memory (at 0x0800000) is NOT empty after erasing then uploading.

To Reproduce

Tried with:
1-no optimization (-O0), smallest (-Os) and debug (-Og).
2-Newlib Nano and Newlib Standard
3-Debug symbols and core logs: 'None' and 'core logs and symbols enabled'
4-Uploader: 'Mass Storage' and 'STM32CubeProgrammer SWD'
5-USB Support: None
6-UART: Enabled (Generic Serial)
7-USB Speed: Low/Full speed

Desktop:

• OS: Windows 11
• Arduino IDE version: 2.3.6

Board:

• Name: Nucleo-144 F767ZI
• Firmware Version: V2J46M32

[fpistm]

Hi could you try to debug and see where it fails, please.
Maybe linked to #2692

[MarwanOSayed]

Hi could you try to debug and see where it fails, please. Maybe linked to #2692

Trying to debug fails as follows:

Any ideas?

[MarwanOSayed]

Also, worth noting, the STM32CubeProgrammer can only connect when Mode = "under reset". The option "normal" only works if "Hardware reset" is also selected. Otherwise, this error pops up:

[fpistm]

I've reproduced and it seems this is due to this commit:
1ef1f86

So, I will revert it. Sorry for the inconvenience, it seems with recent STLink firmware the HSE by pass is not properly feed.

[fpistm]

You can easily change the clock config on your side as a workaround.