Use STM32F4 flash for non-volatile data storage (eeprom)

[syedhashmiraza]

hello i am using stm32f429i-disc1 microcontroller board in this how to generate flash code (eeprom)

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Your other thread showed a major confusion between what is a "microcontroller", and what is a "board" - so edited for clarity.

[syedhashmiraza]

(duplicate thread - merged)

hello i am using stm32f429i-disc1 microcontroller board i want flash code (eeprom) for storing biomatric data

[Andrew Neil]

You mean you want to use the Flash for non-volatile data storage - "emulating" EEPROM?

For that, ST provide the STSW-STM32066 software pack, EEPROM emulation in STM32F40x/STM32F41x microcontrollers:

https://www.st.com/en/embedded-software/stsw-stm32066.html

See Application Note AN3969, EEPROM emulation in STM32F40x/STM32F41x microcontrollers for details:

https://www.st.com/en/embedded-software/stsw-stm32066.html#documentation

It may not exactly suit your requirements, but it does show how to use the STM32F4 Flash for data storage.

With that knowledge, you could adapt to your own needs; eg, see:
https://community.st.com/t5/stm32-mcus-embedded-software/eeprom-emulation-virtual-addresses/m-p/675964/highlight/true#M47888

and follow the link.

PS:

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@syedhashmiraza wrote:

for storing biometric data

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The nature of the data really makes no difference - it's all just data !

[syedhashmiraza]

yes i want to store data in Flash for non-volatile data storage - "emulating" EEPROM i want one refrernce or example code for stm32f429i-disc1

[Andrew Neil]

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@syedhashmiraza wrote:

yes i want to store data in Flash for non-volatile data storage

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I've updated the title to make that clear.

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@syedhashmiraza wrote:

 i want one reference or example code for stm32f429i-disc1

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You can use the STSW-STM32066  as mentioned previously.

[syedhashmiraza]

"I am downloading, but it is not downloading."

[syedhashmiraza]

is this software work for stm32f429i-disc1?

[Andrew Neil]

Give more details.

ST do have trouble with their web servers from time-to-time ...

@SofLit 

[syedhashmiraza]

is STSW-STM32066  code work for stm32f4219i-disc1?

[Andrew Neil]

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@syedhashmiraza wrote:

is this software work for stm32f429i-disc1?

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It just uses the internal flash; no reliance on any external resources - so should work on any target.

But this looks like it:

https://github.com/STMicroelectronics/STM32CubeF4/tree/master/Projects/STM32F429I-Discovery/Applications/EEPROM/EEPROM_Emulation