How to investigate the cause of the Fault Reports.

[HMasu.1]

I use STM32MP151CAA3 Cortex-M4 on my custom board.

I got fault report from uVision debugger when __main called in my startup assembler code.

https://www.keil.com/support/man/docs/uv4/uv4_cp_m347_faults.htm

Memory Manage Faults DACCVIOL (Data access violation flag) are checked.

SCB->MMFAR ( Mem Manage Fault Address Register located at memory address 0xE000ED34) shows 0x10060000.

The address is region that Cortex-M4 cannot access, so I'm not accessing that region in my program.

Why above fault report occurs?

How can I investigate the cause of the Fault Reports?

Best Regards.

H. Masuda

[Olivier GALLIEN]

Hi @HMasu.1​ ,

I know there some "tips and tricks" for proper usage of Keil on top of MP1.

Did you get a look to https://www.keil.com/appnotes/files/apnt_319_v1.1.pdf ?

If you don't find solution here, please comment here detailing Keil and ST-Link version.

Olivier

[HMasu.1]

Hi @Community member​ ,

Thank you for your reply.

I have seen this page, and I have set settings on uVison according to this page.

But I didn't find solution.

The Keil version is as followed.

I'm using ULINK Pro D debugger instead of ST-Link.

μVision V5.28.0.0

Tool Version Numbers:

Toolchain:    MDK-ARM Essential Version: 5.28.0.0

C Compiler:     Armcc.exe    V5.06 update 6 (build 750)

Assembler:     Armasm.exe    V5.06 update 6 (build 750)

Linker/Locator:   ArmLink.exe    V5.06 update 6 (build 750)

Library Manager:  ArmAr.exe    V5.06 update 6 (build 750)

Hex Converter:   FromElf.exe    V5.06 update 6 (build 750)

CPU DLL:        SARMCM3.DLL     V5.28.0.0

Dialog DLL:     TCM.DLL       V1.36.2.0

Target DLL:       ULP2CM3.DLL     V2.211.20.0

Dialog DLL:     TCM.DLL       V1.36.2.0

Best Regards.

H. Masuda