STM32H747 custom board External loader issue

[lavanya]

 

As per my custom board pins(I am using single QUADSPI STR) I have selected and i tried to flash via Cube-Programmer CLIVEONE - MT25QL512_STM32H7XX-PB2-PB10-PF8-PF9-PF7-PF6.stldr

https://github.com/cturvey/stm32extldr/blob/main/h7_mt25ql512a/CLIVEONE-MT25QL512_STM32H7XX-PB2-PB10-PF8-PF9-PF7-PF6.stldr

ISSUE : flash protection enabled 

https://github.com/cturvey/stm32extldr/tree/main/h7_mt25ql512a

ISSUE: I have tried with this external loader but i am not able to erase memory 

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[lavanya]

​@Tesla DeLorean 

[jumman_JHINGA]

If your application can access the MT25QL512 correctly but STM32CubeProgrammer reports "failed to erase memory" when using the external loader, I would investigate the loader implementation itself. In particular, check:

• MassErase() and SectorErase() functions in the loader source.
• Flash geometry (StorageInfo) definition.
• 4-byte addressing initialization for MT25QL512.
• Any STM32H747-specific modifications required by the loader.

[lavanya]

Hi ​@jumman_JHINGA ,

Thank you for response,

1. There is no Issue with Mass Erase and sector erase, I tested QSPI driver with Test Code.
2. I tried implementing custom loader by refering 

   here erase QSPI is working but it is getting failed in Write.

3. I performed a thorough debugging of the issue. Currently, I am facing a problem with the QSPI driver write function. During each write operation, the first byte is consistently missed, and the data write starts from the second byte instead.

[Dor_RH]

Hello ​@lavanya,

This loader already exists in STM32CubeProgrammer for MT25QL512.

To erase the memory, please click the red Erase icon in the programmer interface.

 

[lavanya]

Hi ​@Dor_RH ,

Thank you for response,

QSPI Pins are different in custom board,I am using PB2-PB10-PF8-PF9-PF7-PF6.

I checked with EVAL board there qspi pins configuration is different.

So i can’t use thoes external loaders.

[Pavel A.]

If you can get a J-Link, its software has “universal” QSPI loader that handles any pinout. 

[Pavel A.]

If it says “flash protection enabled” then the protection is enabled. This protection exist precisely to forbid writing.

So, you replace it with a new virgin flash chip, and… same error?