STM32CubeIDE (MCUs)

Ask questions on STM32CubeIDE. Discuss how to build, debug, configure, and optimize your project as well as how to use our software tools.

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STM32CubeIDE 2.1.1 released

We are pleased to announce that the minor version 2.1.1 of STM32CubeIDE is available. What is new in 2.1.1: This release covers the topics listed below: SEGGER J-Link GDB server updated to 9.24 to fix an issue with the Live Expression view during the...

Aimen1 by ST Employee
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STM32CubeCLT 1.21.0 released

We are pleased to announce that STM32CubeCLT 1.21.0 release is available. What is new in 1.21.0: Maintenance of the previous version: Updated in accordance with STM32CubeIDE v2.1.0Update of Clang/LLVM toolchainUpdate of GCC to GCC 14Update of STM32Cu...

Aimen1 by ST Employee
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STM32CubeIDE 2.0 release - early heads-up!

Starting from the release in November 2025, STM32CubeIDE and STM32CubeMX will be available exclusively in their standalone versions. STM32CubeMX will no longer be integrated inside STM32CubeIDE. Instead, the two tools will be interoperable in the sam...

Resolved! u_printf_float - where to set for C_Linker in STM32CubeIDE?

When I compile, I get the following error: The float formatting support (-u_printf_float)is not enabled from linker flagsI can't find Linker flags/Options/Settings for C - just for MCU G++ Linker. When I chose the option, it still didn't remo...

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MFend by Associate III
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  • 19 replies
  • 1 kudos

Could you show me the C data type documents in STM32CubeIDE? I want to know the data type of the GCC compiler, but I failed to find the related documents. below figure is that I found in another brand IDE.

I use STM32CubeIDE 1.9.0, the chip is STM32G474, I want to know the data type of the GCC compiler, but I failed to find the related documents. below figure is that I found in another brand IDE.Could you kindly help? Thanks!

kaka.zhuo by Associate II
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  • 2 replies
  • 1 kudos

Resolved! Even after building code with optimization level -0s. There is no change in size, it just get adjusted with .text and .data.

I am facing issue of memory with Stm32L432xx, So i tried option of increase optimization level from -01 to -0s.But observe no change it just reduce in .text section... but it increased in .data segment. ultimately value is same and issue is continueB...

PSola.1 by Associate
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  • 7 replies
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Resolved! Separation of STACK and HEAP

Hello,I have a general question regarding the linker script generated by STM32CubeIDE.Most of time the STACK and HEAP is placed together into the "same" internal SRAM (see section .user_heap_stack example for demonstration purpose). Note: Yes, there ...

Floki.1 by Associate II
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  • 2 replies
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Ethernet communication not working in ST32Cube IDE 1.9.0

Hi,I have a custom board with STM32f427VG and KSZ8041NL PHY. My ethernet communication is working well in STMCube IDE 1.8.0. But when I try to configure ethernet in ver:1.9.0 I don't see a input box for PHY address. It says it some ethernet settings ...

SSala.3 by Associate III
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  • 1 replies
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Resolved! Login to st.com website fails

I want to download STM32CubeIDE debian version to my laptop. When I click Get Software-->Accept-->Login/Register I get the error " SORRY, PAGE NOT FOUND " . You can see the details at the picture I attached

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Post-generation hook in STM32CubeIDE

In our workflow around the code generation and building firmware using STM32CubeIDE, we have certain manual steps after code generation.Is there a place to hook in a script to be run after code generation completes? Similar to the "Build Steps" which...

JKut by Associate II
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  • 6 replies
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