Issue Running STM32CubeH7RS LED Toggle Example from External Flash

[Sajidaap]

Hi,

When I try to run the sample code for LED Toggle from external flash memory, which is provided in the STM32CubeH7RS package by ST at the link [https://github.com/STMicroelectronics/STM32CubeH7RS], I get the following error:

Break at address "0x80010e4" with no debug information available, or outside of program code.

The location of the directory in my PC is: D:\STM32CubeH7RS\Projects\NUCLEO-H7S3L8\Examples\GPIO\GPIO_IOToggle

I followed the steps mentioned in the below **README file**

However, I can load & debug the program to the external flash using the method shown in this video: [https://www.youtube.com/watch?v=sPiFBzvCWfI&t=1422s]

**My question:** Why is the sample code provided by ST not running from external flash? Is there any additional configuration required?

**System Information:**

-- Board: NUCLEO-H7S3L8

-- STM32CubeIDE: Version 1.17.0 (Build: 23558_20241155_2245)

-- STM32CubeMX: Version 6.13.0-RC5 (Build: 20241122-0809)

Any guidance would be greatly appreciated!

Thanks!

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[KDJEM.1]

Hello @Sajidaap and welcome to the community,

 Please make sure that XSPI2-HSLV is "Checked".

Could you try to use the STM32CubeProgrammer to check the value of XSPI2-HSLV option byte.

Please let me know if the issue is solved or not.

Thank you for your contribution.

Kaouthar

[Sajidaap]

Dear @KDJEM.1,

Thank you for your prompt response.

I have not enabled these settings yet. Before proceeding, I would like to understand the necessary precautions, as I am aware that incorrect configuration might risk damaging the MCU.

Currently, my NUCLEO-H7S3L8 board is powered via a USB-C cable, and the jumper is set to 3.3V.

Thanks,

Sajid

[KDJEM.1]

Hello @Sajidaap,

The HSLV is only activated when VDD ≤ 2.7 V. This feature shouldn’t be used at a voltage higher than 2.7 V, it can lead to unexpected behavior.

The I/O HSLV configuration bit must not be set if the I/O supply (VDD) is above 2.7 V. Setting it while the voltage is higher than 2.7 V can damage the device.

As mentioned in the readme file for GPIO_IOToggle, XSPI2_HSLV=1 I/O XSPIM_P2 High speed option enabled.

Thank you.

Kaouthar