programmer: stlink/v2-clone os: linux version: v1.8.0-2-g65f062f command:

I did some experiments: <div class="snippet-clipboard-content notranslate position

STM32H7A: Flash write fails on second page about stlink HOT 2 OPEN

ii8 commented on July 23, 2024

STM32H7A: Flash write fails on second page

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ii8 commented on July 23, 2024

According to one Neil Race there is a suspiciously similar issue with stm32flash: https://sourceforge.net/p/stm32flash/tickets/161/

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ii8 commented on July 23, 2024

I did some experiments:

$ stat -c '%s' small.bin big.bin 
824
9704

$ st-flash write small.bin 0x08000000
st-flash 1.8.0-2-g65f062f
2024-02-15T17:35:51 INFO common.c: STM32H7Ax_H7Bx: 128 KiB SRAM, 1024 KiB flash in at least 8 KiB pages.
file small.bin md5 checksum: 29eda11138e397cb186819485e13dd2f, stlink checksum: 0x0002c60f
2024-02-15T17:35:51 INFO common_flash.c: Attempting to write 824 (0x338) bytes to stm32 address: 134217728 (0x8000000)
-> Flash page at 0x8000000 erased (size: 0x2000)
2024-02-15T17:35:51 INFO flash_loader.c: Starting Flash write for H7
824/824 bytes written
2024-02-15T17:35:51 INFO common_flash.c: Starting verification of write complete
2024-02-15T17:35:51 INFO common_flash.c: Flash written and verified! jolly good!

$ st-flash write big.bin 0x08000000
...
2024-02-15T17:35:56 ERROR common_flash.c: Verification of flash failed at offset: 6144

$ st-flash write small.bin 0x08002000
...
2024-02-15T17:36:02 ERROR common_flash.c: Verification of flash failed at offset: 0

$ st-flash write big.bin 0x08002000
...
2024-02-15T17:36:25 ERROR common_flash.c: Verification of flash failed at offset: 0

$ st-flash write small.bin 0x08004000
...
2024-02-15T17:50:24 ERROR common_flash.c: Verification of flash failed at offset: 0

$ st-flash write small.bin 0x08006000
...
2024-02-15T17:50:29 INFO common_flash.c: Flash written and verified! jolly good!

$ st-flash write small.bin 0x08100000
st-flash 1.8.0-2-g65f062f
2024-02-15T17:36:40 INFO common.c: STM32H7Ax_H7Bx: 128 KiB SRAM, 1024 KiB flash in at least 8 KiB pages.
Unknown memory region

You can see writing a binary image smaller than 8k(small.bin) directly to the second page also fails, writing one bigger than page size fails too, everything with the same error.
However writing the small file to the page at 0x08006000 works funnily enough.
I also tried writing to the second bank of flash but it doesn't seem to know about it.

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