I'm afraid there is no chance to investigate this any further. Maybe the WIP
bit sticks at '1' after reset, maybe the flash doesn't reply to RDJDID in QPI
mode (early revision, defective?), so you might try to use only SPI mode in
your cfg. Or replace the flash chip? Since it works on one board and not on the
other with same setup, the problem must be related to that board.
---
** [tickets:#290] QSPI debugging is not working in some stm32h753 mcu**
**Status:** new
**Milestone:** 0.10.0
**Created:** Thu Jan 07, 2021 10:44 AM UTC by shaalik
**Last Updated:** Mon Jan 11, 2021 02:10 PM UTC
**Owner:** nobody
Hi All,
i have two custom stm32H753XI + NOR QSPI flash (IS25LP512M) board. I am able
to debug in one board successfully but in another board it fails and even it
doesn't show the external flash ID of the chip. However i'm able to program
both the boards using st cube programmer with external loader and it is working
fine in normal mode.
In not working board, initially i faced issue in debug from internal flash
itself. And i found a fix from internet where they suggested to add PG bit
clear before the Internal flash write. I did the fix on top of
http://openocd.zylin.com/4321 change, then i was able to debug from internal
flash. But facing issue in debug from QSPI flash.
I have same cfg file which is working in one board and not working in another
board.
Please anyone help me to resolve the issue.
Regards,
Shahul
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