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I have an already programmed STM32MCU. But I don't have the source code. I understand it is difficult to get the source code from the IC. I have heard some people can get the binary file from the IC which I can flash to another Arduino. Any guide or material will be helpful. I tried my luck with google. but didn't find any good resources on this matter.

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  • you can probably get the hex file from the mcu you are using, and use a decompiler to get the functions. Tirdad is right, that the code likely wont work on different architectures directly, but once you have the hex file you can start porting functions.
    – j0h
    Sep 25 '20 at 22:41
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you can download the flash content using a ST-Link probe and STM32CubeProg tool. you can't flash it to just "any" arduino board; it must be the exact same chip or same family MCU, if the IOs and peripherals used are the same.

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  • There's also the command-line tool, STM32_Programmer_CLI, which can be used. I describe installing it here: arduino.stackexchange.com/a/77432/7727. Check the help menu, UM2237, or help menu at the command-line (STM32_Programmer_CLI -h), for more command info on which commands to use. Aug 26 '20 at 23:22

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