George Ruinelli

Visitor II

Solved

How to create HEX or BIN file for separate flashing?

Forum|Forum|1 year ago
May 30, 2024
3 replies
7187 views

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?

This topic has been closed for replies.

Best answer by George Ruinelli

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

Super User

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 RuinelliAuthor

Visitor II

@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.

Graduate II

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

Graduate

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 RuinelliAuthor

Visitor II

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

Super User

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

Graduate

Hmmmm :) Nope!

You are right!

Actually my "discovery" concerns CubeIDE...