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Showing content from https://github.com/stlink-org/stlink/pull/1228 below:

Wrong chip definition · Issue #1228 · stlink-org/stlink · GitHub

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In order to allow developers to isolate and target your respective issue, please take some time to select the check boxes below and fill out each of the following items appropriate to your specific problem.

• Programmer/board type: [enter here] (e.g STLINK /V1, /V2, /V2-onboard, /V2-clone, /V3)
• Operating system an version: [enter here] (e.g Linux, macOS, Windows)
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• stlink commandline tool name: [enter here] (e.g st-info, st-flash, st-trace, st-util)
• 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 e62b9e1 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.

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