[STM32H743/753]: Cannot write to area at 0x0810_0000, but can at 0x0800_0000

[rcordeau]

• [X ] I made serious effort to avoid creating duplicate or nearly similar issue

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• Programmer/board type: STLINK V2
• Operating system an version: Ubuntu 20.04, MacOS 10.15
• stlink tools version and/or git commit hash: 1.7.0
• stlink commandline tool name: st-flash
• Target chip (and board, if applicable): STM32H743/753

Commandline output:
Good output @ 0x0800_0000
st-flash --reset write ~/fcc.bin 0x08000000
st-flash 1.7.0
2021-05-27T00:29:24 INFO common.c: H74x/H75x: 128 KiB SRAM, 2048 KiB flash in at least 128 KiB pages.
file /Users/rcordeau/fcc.bin md5 checksum: c951e84957504eb54c2e2e73c5bb77c, stlink checksum: 0x0133d67c
2021-05-27T00:29:24 INFO common.c: Attempting to write 223904 (0x36aa0) bytes to stm32 address: 134217728 (0x8000000)
2021-05-27T00:29:25 INFO common.c: Flash page at addr: 0x08000000 erased
2021-05-27T00:29:25 INFO common.c: Flash page at addr: 0x08020000 erased
2021-05-27T00:29:25 INFO common.c: Finished erasing 2 pages of 131072 (0x20000) bytes
2021-05-27T00:29:25 INFO common.c: Starting Flash write for H7
223904/223904 bytes written
2021-05-27T00:29:30 INFO common.c: Starting verification of write complete
2021-05-27T00:29:32 INFO common.c: Flash written and verified! jolly good!
2021-05-27T00:29:32 WARN common.c: NRST is not connected

Bad output @ 0x0810_0000
st-flash --reset write ~/fcc.bin 0x08100000
st-flash 1.7.0
2021-05-27T00:30:58 INFO common.c: H74x/H75x: 128 KiB SRAM, 2048 KiB flash in at least 128 KiB pages.
file /Users/rcordeau/fcc.bin md5 checksum: c951e84957504eb54c2e2e73c5bb77c, stlink checksum: 0x0133d67c
2021-05-27T00:30:58 INFO common.c: Attempting to write 223904 (0x36aa0) bytes to stm32 address: 135266304 (0x8100000)
2021-05-27T00:30:58 INFO common.c: Flash page at addr: 0x08100000 erased
2021-05-27T00:30:58 INFO common.c: Flash page at addr: 0x08120000 erased
2021-05-27T00:30:58 INFO common.c: Finished erasing 2 pages of 131072 (0x20000) bytes
2021-05-27T00:30:58 INFO common.c: Starting Flash write for H7
223904/223904 bytes written
2021-05-27T00:31:03 INFO common.c: Starting verification of write complete
2021-05-27T00:31:03 ERROR common.c: Verification of flash failed at offset: 0
stlink_fwrite_flash() == -1

OUTPUT/ERROR of the commandline tool(s)

The official STM32Programmer works fine. If I write the same file to 0x080e0000, it half-verifies. The portion starting at 0x08100000 reads back all F's.

When writing to 0x08000000, the debug output when writing shows (making it a short example):
214400/223904 bytes written2021-05-27T00:18:39 DEBUG common.c: *** stlink_write_mem32 64 bytes to 0x8034580
2021-05-27T00:18:39 DEBUG common.c: *** stlink_read_debug32 0x00010000 at 0x52002010

When writing to 0x08100000, the debug output when writing shows (making it a short example):
214400/223904 bytes written2021-05-27T00:17:06 DEBUG common.c: *** stlink_write_mem32 64 bytes to 0x8134580
2021-05-27T00:17:06 DEBUG common.c: *** stlink_read_debug32 0000000000 at 0x52002010

[Ant-ON]

@rcordeau When writing to the second bank, the FLASH_SR2 register (0x52002110) instead the FLASH_SR register (0x52002010) is use. Can you attach complete logs?

[rcordeau]

flashlog_08100000.txt
Sure thing.
This is the log that shows it erroring out when writing to 0x08100000

[rcordeau]

This is another error log when writing to 0x080e0000, which would cross into the 0x08100000 page.
flashwrite_080e0000.txt

[Ant-ON]

@rcordeau Thanks for the logs! I seem to have found the problem. Could you check out https://github.com/Ant-ON/stlink/tree/h7_db_fix branch?

[rcordeau]

Hi @Ant-ON, yep, this fixed it! Thanks!