64kb flash file on a 128kb device

Posted on October 16, 2017 at 10:52

Hi, I have a board with a STM32F103C8T68 (64kb) cpu and I have produced a series of boards with wrong CPU STM32F103CBT6 (128kb).

I have a flash file for the 64 kb edition. Is there an easy way to get the hex file to run on the 128Kb version?

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Guru

Posted on October 16, 2017 at 11:29

Does it not run? Do you have any internal dependencies on the size of the flash sectors?

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Associate

Posted on October 16, 2017 at 11:41

This is a code for a led driver. It receives commands on a com port and drives 3 multi colored LED's with PWM .

The original part was a 64 kb device. We do not have the source code.

I have the programming HEX file from the factory and I can read out the file from a working device.

When I compare files they are all identical.

Senior III

Posted on October 16, 2017 at 14:23

I don't know how complex the application is, perhaps rewriting it is an option.

Or, use gcc based toolchain for ARM, and do a 'objdump' to disassemble the code.

Your name doesn't sound far-eastern, so I guess no IP issues are involved with reverse engineering ... ;)

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