EXTMEM_LOADER NOR_SFDP Writing Problem

[kb24]

I am using STM32H7R7L8H with MX25L12833F external memory. I created a project with has bootloader, application and external memory loader.

Before starting this project I opened another to test if I can read/write/erase MX25L12833F. By using XSPI in Quad mode I could do all the operations.

 

Below I shared the configuration:

XSPI1:

EXTMEM_LOADER:

EXTMEM_MANAGER:

 

With this configuration I built the project and it generated external loader. In STM32CubeProgrammer I can read MX25L12833F memory, it can do mass erase too but it can't do sector erase.

 

I created an application hex which is located at 0x90000000 and tried to write this file to external memory by using generated loader. Here is the result:

00:51:51 : Opening and parsing file: Appli.hex

00:51:51 : Memory Programming ...

00:51:51 :   File          : Appli.hex

00:51:51 :   Size          : 8.54 KB

00:51:51 :   Address       : 0x90000000

00:51:51 : Erasing memory corresponding to segment 0:

00:51:52 : Erasing external memory sectors [0 2]

00:51:52 : Download in Progress:

00:51:52 : File download complete

00:51:52 : Time elapsed during download operation: 00:00:00.584

00:51:52 : Verifying...

00:51:52 : Read progress:

00:51:53 : Error: Data mismatch found at address  0x90000002 (byte = 0x00 instead of 0x01)

00:51:53 : Time elapsed during verifying operation: 00:00:00.538

00:51:53 : Error: Download verification failed

00:51:53 : RUNNING Program ...

00:51:53 :   Address:      : 0x90000000

00:51:53 : Application is running, Please Hold on...

00:51:53 : Start operation achieved successfully

When I read the memory I see this:

How can I fix this problem? Thank you.

[Saket_Om]

Hello @kb24 

Please refer to the article below: 

How to create an external flash loader for an STM3... - STMicroelectronics Community