STM32 MCUs Software development tools

​After generating a CMAKE project using STM32CubeMX2 v1.1.1 followed by setting compiler options to “treat warnings as errors” (-Werror) and enable strict standards-conformance (-Wpedantic) in the root CMakeLists.txt file, I am errors in, mx_def.h. Though this post shows the workaround:What is the recommended C Standard that STM32C5 project should follow? If the generated code stated “gnu11” but yet uses “gnu23”, shouldn’t the generator use the latter instead (see solution)? And, what are the dangers of doing so? Error Message:error: ISO C restricts enumerator values to range of 'int' before C23 Full Error message:[build] C:/PathTo/ProjectName/source/App/generated/hal/mx_def.h:32:38: error: ISO C restricts enumerator values to range of 'int' before C23 [-Werror=pedantic][build]    32 |   SYSTEM_OK                        = 0xEAEAEAEAU,        /* System initialization successfully       */[build]       |                                      ^~~~~~~~~~~[build] C:/PathTo/ProjectName/source

I am having an issue with .ioc file association on macOS when using STM32CubeIDE 2.2 together with the standalone STM32CubeMX.The .ioc file does not seem to be properly registered with macOS.For example, in Finder, .ioc files are shown as unknown files rather than as STM32CubeMX project files.More importantly, when I open an .ioc file from STM32CubeIDE, STM32CubeMX is launched, but it stays on the welcome screen instead of opening the selected .ioc project.The behavior is roughly:STM32CubeIDE ↓STM32CubeMX launches ↓CubeMX stays on the welcome screen ↓project.ioc is not opened I've made some checks. macOS does not appear to assign a normal, application-specific UTI to the .ioc file.For example:mdls -name kMDItemContentType -name kMDItemContentTypeTree project.iocreturns:kMDItemContentType = "dyn.ah62d4rv4ge80w55d"kMDItemContentTypeTree = ( "public.item", "dyn.ah62d4rv4ge80w55d", "public.data")I also checked the application bundle:plutil -p /Applications/STM32

Hi, I have a custom product/board that has an embedded STM32L433. The STM32 is powered with an external battery. It is also connect through USB to a COM board that runs Windows. The COM controls the boot0 and reset pins of the STM32 which allows me to update the chip using CubeProgrammer API. I created a custom application in C# that worked fine until I tried to activate RDP level 1. Since I cannot do a POR, I implemented the activation of RDP in the STM32 software using the enter standby mode method. When I try to update with the RDP already active, I use the connectDfuBootloader2 method with rdu = true. This properly downgrade RDP from level 1 to level 0 and I am able to update the STM32 using the downloadFile method afterward. The issue is that after downloading the new software, the STM32 gets stuck in bootloader. The only way to get it unstuck is to call another time the connectDfuBootloader2 with rdu = true. This does not downgrade the RDP level, it only restarts the STM32 which

When building in STM32CubeIDE 2.1.1, and targeting an STM32F303K8,Project properties C/C++ Build Settings MCU GCC Compiler Miscellaneous Near the bottom, observe a checkbox for -mtune=cortex-a35.This option really does have effect in the gcc command line, and that really does significantly alter the compiled machine code.But… why is this allowed in the UI? Why would this tuning option appear specifically for the A35, when the STM32F303K8 is an M4? By default, the makefile does correctly add -mcpu=cortex-m4.

I’ve been using STM32CubeIDE, STM32CubeMX, STM32CubeProgrammer, and STM32CubeMonitor on a Mac currently running macOS 26.6.When I run env or export in Terminal (which uses Zsh by default), I find these two STM32-related environment variables.STM32CubeMX_PATH=/Applications/STM32CubeMX.app/Contents/ResourcesSTM32_PRG_PATH=/Applications/STM32CubeProgrammer/STM32CubeProgrammer.app/Contents/Resources/binExamined Zsh dotfiles in my home folder and found the following two *export*s in ~/.zshrc that set them.export STM32CubeMX_PATH=/Applications/STM32CubeMX.app/Contents/Resourcesexport STM32_PRG_PATH=/Applications/STM32CubeProgrammer/STM32CubeProgrammer.app/Contents/Resources/binWhich apps have added these; CubeMX, CubeProg, or perhaps the respective plugins from CubeIDE? What is their intended purpose, and in particular, which other STM32Cube tools rely on them? Also, do the apps add these every time on launch or only once during installation?

I discovered this issue while trying to program the Riverdi SM-RVT50HQSNWC01 using the STM32UG59.  I spent days trying to figure out why the Riverdi demo in TouchGFX 4.26.1 was failing to program the external flash.  It always failed when trying to erase external flash.  This was with Programmer version 2.23.0.  Even with the GUI version, I found that after connecting to the board, the first read of external flash would fail.  Sometimes immediately, sometimes after a minute or so.  I discovered that the second read performed immediately after the failure would work.  Once I suffered through the first failure, I was able to read and program the external flash with no problem.  I was ready to give up on the Riverdi board when I decided to try a different system.  On this second system, I was able to create a demo from the Riverdi template, built it and program the board from TouchGFX 4.26.1.  Same version as the failing system.  I then noticed that the STM32CubeProgrammer on the second s

I made a project using CubeMX and imported it to CubeIDE. When I clicked Run → Debug, following message appeared, “The selection cannot be launched, and there are no recent launches.” I used CubeIDE version 1 before, and I could debug a program. What is wrong? 

OK, thank you it is so easy to omit.Could you please help me with another issue on usbx: Default value for “CoreStack Device/Host” is “enable” but there is warning in red: The component “USBX/CoreSystem” must be selected alongside either “USBX/UX Host CoreStack” or “USBX/UX Device CoreStack”  Core Sytem is selected as you can see. Or is it referencing to some other component?  

I'm using a Macbook Air M5. I downloaded the STM32CubeIDE 2.2.0 macOS (Apple Native) version to my computer. After importing my projects, I tried to debug. It connects to the ST-Link and performs the necessary operations. Then, when debugging is ready, I start the debug and get this error: GdbSession, Lost target connection, Exiting... GdbSession, Lost target connection, Exiting... I checked the permissions on my Mac and updated the STM Link version. Also, when I install the Mac (Apple Native) version of STM32CubeProgrammer, I can program the same board using the ST-Link. The port is visible. And interestingly, when I open the same project on my Windows computer, I can debug it without any problems using the same ST-Link.Any advice on how to resolve this issue so I can debug directly from STM32CubeIDE would be greatly appreciated!Thanks in advance for your help.Best regards,

Hello everyone,I am experiencing an issue with STM32CubeMX version 6.18.0 right after a fresh installation. The software is unable to connect to the server to download repositories or updates.Here are the details of my situation:Network Environment: I am using my office Wi-Fi, which does not use a proxy server. Other applications connect to the internet without issues. Error Message: I keep getting a "Problem during server connection" error. Troubleshooting Done: I have already gone into the Connection Settings and tried changing the proxy settings to "No Proxy" as well as "System Proxy", but neither option resolved the issue. Since there is no proxy on our network, I am unsure what is blocking STM32CubeMX from reaching the server. Has anyone encountered this with version 6.18.0, or does anyone know which specific ports or URLs need to be whitelisted in our office firewall?Any help or guidance would be greatly appreciated. Thank you!

Hello,I am currently working on an AI project on the STM32N6570-DK using STM32Cube AI Studio and STM32CubeIDE.I followed the official STM32N6 AI deployment tutorial and generated both projects:FSBL AppliThe AI files generated by STM32Cube AI Studio were copied into the project and the project builds successfully without errors.The application is downloaded correctly to the board and the verification step is successful. However, when the debugger tries to start the execution, the target immediately stops responding.The console shows:Download verified successfullyError in executing 'cont' commandTarget is not responding, retrying...I also get a message indicating a break at an address outside of the application code.At this point I am not sure if:the application is entering a HardFault very early during startup, there is an issue with the FSBL configuration, there is a problem with the linker script or the AI memory sections, or if I missed a configuration step in the STM32N6 deployment

Hi,I'm bringing up a USB MSC device on an STM32U385CGT6 with the USBX middleware in standalone mode. Everything comes from CubeMX 6.18.0 with STM32Cube FW_U3 V1.4.0 (USBX 6.4.0): USB_DRD_FS in device mode, USBX Core System + UX Device CoreStack + UX Device Controller + UX Device MSC.While comparing the generated code and some example applications (NUCLEO-U385RG-Q Ux_Device_HID_Standalone) it looks there is a regression in the generated HAL_PCD_MspInit. While the version from the example application enables Vdd USB, this is missing from the currently generated version of HAL_PCD_MspInit causing the peripheral to remain powered down. As a fix HAL_PWREx_EnableVddUSB(); can be called in the user code section at the bottom of HAL_PCD_MspInit. Best Regards, Cecil

I have an older v1.0.0 installation that works fine, but the newer v1.1.1 freezes up on launch and does not respond to mouse or keyboard input. 2026-08-14T09:04:40.380Z [Error] Could not initialize contribution TypeError: Cannot read properties of undefined (reading 'onChanged') at g.initializeEventWatchers (file:///home/user/.local/share/STMicroelectronics/STM32CubeMX2_1.1.1/resources/stm32cubemx-application/1.1.1/dist/resources/app/lib/frontend/bundle.js:92134:94886) at g.initialize (file:///home/user/.local/share/STMicroelectronics/STM32CubeMX2_1.1.1/resources/stm32cubemx-application/1.1.1/dist/resources/app/lib/frontend/bundle.js:92134:94735) at file:///home/user/.local/share/STMicroelectronics/STM32CubeMX2_1.1.1/resources/stm32cubemx-application/1.1.1/dist/resources/app/lib/frontend/bundle.js:92524:49789 at r.startAsync (file:///home/user/.local/share/STMicroelectronics/STM32CubeMX2_1.1.1/resources/stm32cubemx-application/1.1.1/dist/resources/app/lib/frontend/bundle.js