STM32CubeMX 6.14 stuck generating code & STM32CubeIDE 1.18 won't generate code

[greffeb]

Hardware: STM32L071CZTX
Software Versions:

• STM32CubeMX 6.14
• STM32CubeIDE 1.18

Problem Description:

I'm experiencing code generation issues with both Cube software tools on an existing STM32L071CZTX project:

Issue 1 - STM32CubeMX 6.14:

• Code generation process gets stuck and becomes unresponsive
• Only way to terminate is through Task Manager (killing OpenJDK Platform binary process)

Issue 2 - STM32CubeIDE 1.18:

• Code generation fails when modifying clock parameters
• No code is generated after clock configuration changes

Steps Already Taken:

• Performed complete uninstallation of all STM32 software
• Fresh installation using newly downloaded files from ST website
• Verified MyST account login on both applications

Request: Has anyone encountered similar issues with these software versions? Any guidance on resolving these code generation problems would be greatly appreciated.

Thank you for your assistance.

 

[Ghofrane GSOURI]

Hello @greffeb 

Could you please provide more details about your OS.

I used CubeMX 6.14.1 and CubeIDE 1.18.1 and everything is working correctly.

 

THX

Ghofrane

[greffeb]

here are my specs : 

• OS: Windows 11 Professional (Build 22631)
• Computer: Dell XPS 15 9560 laptop
• Processor: Intel Core i7-7700HQ @ 2.80GHz (4 cores, 8 threads)
• RAM: 16 GB
• BIOS: Dell version 1.24.0 from October 2021

CubeIDE and CubeMX works on a fresh project

i have some .ftl files laying arount my project root, deleting them (and the MXTmpFiles) does not fix my problem. however, they come back after another generation tentative.

another test i did was to regenerate a new project from my .ioc but cubeMX was denied access to the C:/ drive

 

so i tried running as administrator. this fixes the issue for the new project generation but not updating my existing one.

 

 

 

[htxy]

How is your RAM and CPU usage while performing those tasks?

[greffeb]

Nothing out of the ordinary

[macalon]

Hello,

I'm experiencing a similar issue:

https://community.st.com/t5/stm32cubemx-mcus/stm32cubemx-freezes-during-code-generation/td-p/818146

I'm not sure if this is the cause of the freeze, but I found an error in the MX log.

C:\Users\<My Account>\.stm32cubemx\STM32CubeMX.log

...

2025-07-02 11:50:30,696 [ERROR] CodeEngine:432 -
java.io.UnsupportedEncodingException: UFT-8
at sun.nio.cs.StreamDecoder.forInputStreamReader(StreamDecoder.java:79) ~[?:?]
at java.io.InputStreamReader.<init>(InputStreamReader.java:111) ~[?:?]
at freemarker.cache.FileTemplateLoader$4.run(FileTemplateLoader.java:210) ~[STM32CubeMX.exe:?]
at freemarker.cache.FileTemplateLoader$4.run(FileTemplateLoader.java:202) ~[STM32CubeMX.exe:?]
at java.security.AccessController.doPrivileged(AccessController.java:571) ~[?:?]
at freemarker.cache.FileTemplateLoader.getReader(FileTemplateLoader.java:202) ~[STM32CubeMX.exe:?]
at freemarker.cache.MultiTemplateLoader$MultiSource.getReader(MultiTemplateLoader.java:147) ~[STM32CubeMX.exe:?]
at freemarker.cache.MultiTemplateLoader.getReader(MultiTemplateLoader.java:105) ~[STM32CubeMX.exe:?]
at freemarker.cache.TemplateCache.loadTemplate(TemplateCache.java:547) ~[STM32CubeMX.exe:?]
at freemarker.cache.TemplateCache.getTemplateInternal(TemplateCache.java:439) ~[STM32CubeMX.exe:?]
at freemarker.cache.TemplateCache.getTemplate(TemplateCache.java:292) ~[STM32CubeMX.exe:?]
at freemarker.template.Configuration.getTemplate(Configuration.java:2822) ~[STM32CubeMX.exe:?]
at freemarker.template.Configuration.getTemplate(Configuration.java:2671) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeEngine.freemarkerDo(CodeEngine.java:410) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeEngine.genCode(CodeEngine.java:271) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateOutputCode(CodeGenerator.java:6373) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateLicenceText(CodeGenerator.java:9717) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateCodeFiles(CodeGenerator.java:1942) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateDefaultConfig(CodeGenerator.java:10860) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateCode(CodeGenerator.java:1583) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.plugins.projectmanager.engine.ProjectBuilder.generateCode(ProjectBuilder.java:3061) ~[?:?]
at com.st.microxplorer.plugins.projectmanager.engine.ProjectBuilder.createCode(ProjectBuilder.java:2223) ~[?:?]
at com.st.microxplorer.plugins.projectmanager.engine.ProjectBuilder.createProject(ProjectBuilder.java:818) ~[?:?]
at com.st.microxplorer.plugins.projectmanager.engine.GenerateProjectThread.run(GenerateProjectThread.java:61) ~[?:?]
2025-07-02 11:50:30,702 [INFO] CodeEngine:287 - Generated code: C:\Projects\STM\test207\MXTmpFiles\license.tmp
2025-07-02 11:50:30,860 [ERROR] ProjectBuilder:2226 -
java.io.IOException: Can't delete C:\Projects\STM\test207\BSD_License.ftl
at com.st.components.util.FilesUtils.delete(FilesUtils.java:34) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeEngine.genCode(CodeEngine.java:301) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateOutputCode(CodeGenerator.java:6373) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateLicenceText(CodeGenerator.java:9717) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateCodeFiles(CodeGenerator.java:1942) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateDefaultConfig(CodeGenerator.java:10860) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.codegenerator.CodeGenerator.generateCode(CodeGenerator.java:1583) ~[STM32CubeMX.exe:?]
at com.st.microxplorer.plugins.projectmanager.engine.ProjectBuilder.generateCode(ProjectBuilder.java:3061) ~[?:?]
at com.st.microxplorer.plugins.projectmanager.engine.ProjectBuilder.createCode(ProjectBuilder.java:2223) ~[?:?]
at com.st.microxplorer.plugins.projectmanager.engine.ProjectBuilder.createProject(ProjectBuilder.java:818) ~[?:?]
at com.st.microxplorer.plugins.projectmanager.engine.GenerateProjectThread.run(GenerateProjectThread.java:61) ~[?:?]

Thanks!

 

[ReallyWantIT]

I had the same issue for three months already, which caused my cubemx code generation malfunction. Here's the issue: 

The solution: find the file on the right named below

Type in the last line. 

OR: type in same line but replace GBK to UTF-8.

I don't know how exactly this problem occur. According the online information, it seemd that the compiler detect wrong code"UTR-8s", which should be "UTR-8". Here's relative information in the mannual of CubeIDE:

 

 

[ReallyWantIT]

My problem above is the same as 

"Issue 1 - STM32CubeMX 6.14:

• Code generation process gets stuck and becomes unresponsive
• Only way to terminate is through Task Manager (killing OpenJDK Platform binary process)"

[greffeb]

I don't know if it was the issue but i moved the project directory from a virtual google drive G: to the C: hard disk and i could go back to a working state. IDK why it worked untill now.

i had to generate a new project from the .ioc file using CubeIDE and import all my code back into the new project.

the same operation under the G: drive did not work