How to create HEX or BIN file for separate flashing?

[George Ruinelli]

Currently the extention only builds an ELF file.

How can I tell cmake to not only build an ELF file but also a HEX or BIN file?

[Andrew Neil]

Add the conversion as a post-build step;

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

EDIT: sorry, that's for CubeIDE - I guess VSCode has something similar?

[George Ruinelli]

---

@Andrew Neil wrote:

EDIT: sorry, that's for CubeIDE - I guess VSCode has something similar?

---

Thanks for your reply. But yes, I need it vor VS Code.

[Tesla DeLorean]

Perhaps a command line option to the linker, or use objcopy / objdump to get the output forms you want.

[George Ruinelli · Accepted solution]

So, to answer my own question, I got it working by appending the following lines to `CMakeLists.txt` in the project folder:

# Convert output to hex and binary
add_custom_command(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD
    COMMAND ${CMAKE_OBJCOPY} -O ihex $<TARGET_FILE:${CMAKE_PROJECT_NAME}> ${CMAKE_PROJECT_NAME}.hex
)

# Convert to bin file -> add conditional check?
add_custom_command(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD
    COMMAND ${CMAKE_OBJCOPY} -O binary $<TARGET_FILE:${CMAKE_PROJECT_NAME}> ${CMAKE_PROJECT_NAME}.bin
)

Snipped cortesy of https://github.com/MaJerle/stm32-cube-cmake-vscode

[Cats]

Hello 

I had the same question and I ended up with this path, which I share with you:

From CubeIDE screen with a project OPEN

I select: Project > Properties and then C/C++ Build.

From the drop down of the C/C++build I select <Settings> and then, on the tab <Tool Settings> I select <MCU/MPU post build outputs>.

I check the boxes Convert to binary and Convert to hex

Finish by pressing APPLY AND CLOSE

On the next BUILD, the .hex and .bin files are present inside RELEASE folder of the project. 

Hope this helped.

[George Ruinelli]

@Cats You did realise that I ask vor a VS Code and not for an Eclipse solution?

[Cats]

Hmmmm  :) Nope!

You are right!

Actually my "discovery" concerns CubeIDE... 

[Pavel A.]

Need to add something to the build commands defined in the json file? Google for description of that json file.