stlink-org
[STM32F446]: Wrong chip definition
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- [X] I made serious effort to avoid creating duplicate or nearly similar issue
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st-info,st-flash,st-trace,st-util) - [X] Target chip (and board, if applicable): [STM32F446] (e.g STM32F103C8T6 (NUCLEO-F103RB))
Further we kindly ask you to describe the detected problem as detailed as possible and to add debug output if available, by using the following template:
Commandline output:
st-flash --area=option read
st-flash 1.7.0-184-g468b1d2
Failed to parse flash type or unrecognized flash type
detected chip_id parametres
# Device Type: STM32F446
# Reference Manual: RM0390
#
chip_id 0x421
flash_type 3
flash_size_reg 0x1fff7a22
flash_pagesize 0x20000
sram_size 0x20000
bootrom_base 0x1fff0000
bootrom_size 0x7800
option_base 0x40023c14
option_size 0x4
flags 2
2022-02-23T11:50:47 INFO common.c: STM32F446: 128 KiB SRAM, 512 KiB flash in at least 128 KiB pages.
0ffeaaed
Expected/description:
Introduced in this commit https://github.com/stlink-org/stlink/commit/e62b9e1f2a1b6dea7e9ccb053c14c2c6ad0b57d7 the option byte area has been changed. This leads to a read-out of 0x40023c14 which is somwhere in the AHB1 area.
Please change back option area to 0x1FFFC000 with a size of 16bytes, as shown in the datasheet and the attached images.
It should be ok to leave this open, even if it's a duplicate. We can mark this ticket respectively.
My thoughts about this issue were not correct.
I figured out 0x40023c14 (FLASH_OPTCT) is somehing like a shadow register of 0x1fffC000 and 0x1fffC800.
I just was focused to the option byte registers.
The fixed memory address in commit e62b9e1f2a1b6dea7e9ccb053c14c2c6ad0b57d7 appears to be correct. Further details can be found e.g. on the ST community forum: Link.