How can i read Hex file from STM32

[simoBen47]

hey everyone,

I need to get access to device of STM32 board to read Hex file. any idea please ?

I am using STM32F401RE.

Simo

[Tesla DeLorean]

Use the ST-LINK Utilities, read memory, save as a .HEX file.

Use Keil Debugger, and SAVE command at console.

Use the System Loader, pull data with protocol and save to file.

[simoBen47]

Thank you for your reply.

What I need exactly, is to be able to manipulate in real time the firmware after having programmed STM32.

For example read it and check its integrity...

Simo

[rclar.6]

Exactly what I am trying to do. I have read in the binary modified it to contain a CRC32

and now want to read my modified hex file in, with the symbols coming from the

'elf' file. But the only file types I seem to be offered are elf and something called 'axf'.

 

I want to be able to use the hex file because that is what production get

[Andrew Neil]

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@rclar.6 wrote:

the only file types I seem to be offered are elf and something called 'axf'.

I want to be able to use the hex file because that is what production get

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Tools are available to convert from AXF or ELF to HEX; eg, objcopy

https://ftp.gnu.org/old-gnu/Manuals/binutils-2.12/html_node/binutils_5.html 

https://stackoverflow.com/questions/19458031/how-to-create-a-executable-hex-from-elf-file-format

 

[rclar.6]

me too. I know it used to read the hex file for the flash data and the lef file for the symbols. so you could debug the actual hex file that had , say, a CRC32 checksum in it.

 

[Tesla DeLorean]

If you need to debug, either have an option to debug without the CRC / Signing, or write something to post-process the ELF, expanding the right sections so you can add the CRC / Signing at the end, or refactoring the ELF to consolidate sections, and add the CRC / Signing to the larger monolithic section.

[rclar.6]

OK but we have scripts that post process the binary into hex files, using objcopy. This produces a hex file (useful for production later in the development stages) with a CRC32 in the final FLASH section

With the old STM IDE I used to be able to download the binary image from the hex file and the symbols from the elf. The new GUI does not seem to give the option of reading a hex file.

That way I could debug with a pre calculated CRC32 (and make sure the CRC32 parameters were producing the correct CRC32 variant b[byte-reversed, xor's with 0xFFFFFFFF are two examples of variants]).