STM32CubeIDE (MCUs)

I am trying to build the basic LED Blink on the STM32-N6570-DK , since i have build the code and try to run with the default settings it ends up with the following problem , whats the reason and how to solve this ? 

Hello,how may I change font size for Live Expressions view?None of the options in General | Appearance | Colors and Fonts has effect. Alessandro

I am asking this question because I am a relatively new engineer working with STM32 and Cube IDE. When choosing the MCU to create a new project for my new board containing the STM32F401CCU6, I see that it is not listed and only STM32F401CEU6 appears. Can I create the project based on this model number and will everything work the same? I wanted to try it myself, but today has been a tough day, so I would appreciate your help with an answer tomorrow when I get to the office to save time.Thank you in advance.  

I have recently Intigrate GithubCopilot in STM32CubeIDE.Issue is I can not able to change font of copilot chat. Its very small and diffuclt to read.I tried all option in fonts and color menu.I am using On Linux(Ubuntu -24.04 LTS)

Split from old thread Debug: "No source available for main()"This is not the same question.Little late to the party but I have the same issue kinda. I switched to other branch in our project and I had the very same result. Then I took all suggested steps and I get when I tried to debug:No source available for "__floatdisf() at 0x800216e" Besides after switching to that branch program compiles just fine but doesn't work. All of this is of some settings that remained in project and weren't covered in git commit, but it's hard to commit every single file in CubeIDE enviroment. All important files were covered like all code files and ioc etc. i always switch when Cube is not running because it also creates issues. Any ideas?

In iDE version 1.19, there was an STM32 Project creation feature, but it disappeared when I updated to 2.0.

Hi Team, Urgent help required!! Today I have update my CubeIDE to the latest version, before the update i have had several projects saved, but none of it is launching in CubeIDE, when i click on the .IOC file from CubeIDE it opens on CubeMX and when i clock on generate code it says "The Code is successfully generated under :C:/Users/S****** H******/STM32CubeIDE/workspace_1.16.0/Door Module Testing" and as soon as i click on Open Project it goes to CubeIDE and shows main.c file. When I try to open the .IOC in CubeIDE it redirects to CubeMX again, a never ending loop has formed. Attaching screenshots for your review. Someone from ST Electronics please look into my issue and give me a quick fix or a workaround. Regards, Prateek

Hello all.I'm writing an application with the NUCLEO-H563ZI board (with the intention to use later the STM32H563 into a custom board).My application will communicate with a master PC via the embedded Ethernet, exchanging process data and commands.The protocol will be, most probably, Modbus/TCP.I've been able to configure the board (I/O), run the ThreadX OS, setup and run netXDuo middleware.I set up a TCP socket server connection on the STM32, with a C# test application as a client.I can open the socket from the C# client, send ad receive TCP packets almost correctly.The TCP server on the STM32 receives a packet from the client, extract the payload (data) from it, creates a new packet, copy the payload to the new packet and then echoes back the new packet to the client.This will change in the future, of course, but for the first tests it seemed nice to get back the same data.Here I have a problem.Everything works fine if the packet payload is less than 516 bytes long; over such a thresh

Hi,I find even I disable Non-Secure Project's "Project References" to the secure one, the secure project still automatically build when I build the Non‑Secure one.And I find the "disable Project References" setting is work only when the 1st time build the Non-Secure Project after STM32CubeIDE open. After the 1st time build, STM32CubeIDE ignores the 'disable' setting.Snaku.

STM32CubeIDE Version: 2.0.0When trying to create a new project from the IOC of another project, I can't find a way to do it. Is this feature lost or BUG ? Thanks in advance.

HI, I've been trying to uploading my program to my Nucleo F411RE using STM32CubeIDE however I keep getting this error:"Log output file: "****"ST-LINK SN : 066CFF495365495067182356ST-LINK FW : V2J46M33Board : NUCLEO-F411REVoltage : 0.01VSWD freq : 4000 KHzConnect mode: Under ResetReset mode : Hardware resetDevice ID : 0x431Revision ID : Rev ADevice name : STM32F411xC/EFlash size : 512 KBytes (default)Device type : MCUDevice CPU : Cortex-M4BL Version : 0x0   Opening and parsing file: ST-LINK_GDB_server_btEB5C.srec  Memory Programming ...File : ST-LINK_GDB_server_btEB5C.srecSize : 7.82 KB Address : 0x08000000  Erasing memory corresponding to segment 0:Erasing internal memory sector 0Error: failed to erase memory  Error: failed to erase memoryEncountered Error when opening /Applications/"****"Error in STM32CubeProgrammerShutting down...Exit."I did accidentally short the board for a second and it was still working after that but after a minu

Title edited from just "login" to identify which particular login is affected.I can't log in to my account through the program and I can't open code generation. Can you help me with this?

Hello,i have project with a'n STM32H743II on a custom board. I use a J-Link Plus to debug and download the program, everthing was working fine. When i updated to version 2.0.0  downloading the program elf file failed. After initialization sequence and downloading the first block the debugger stops, because it can't load the elf file, but the file exists and the path is correct. Message window:Debugger console output: SEGGER J-Link GDB Server V8.80 Command Line Version JLinkARM.dll V8.80 (DLL compiled Oct 22 2025 11:56:02) Command line: -port 2331 -s -device STM32H743II -endian little -speed 4000 -if swd -vd-----GDB Server start settings-----GDBInit file: noneGDB Server Listening port: 2331SWO raw output listening port: 2332Terminal I/O port: 2333Accept remote connection: localhost onlyGenerate logfile: offVerify download: onInit regs on start: offSilent mode: offSingle run mode: onTarget connection timeout: 0 ms------J-Link related settings------J-Link Host int

I have installed the stm32 cube ide , after creating the project i am get .ioc file for the configuration , i have done reinstall process but i am unable to clear the issue , the ide is opened as the image attached . 

i can't get to download stm32cubeide. download jus

I recently updated my stm32cubeide from 19 to 20.0.0 but the .ioc files of my existing projects open as text file not graphical as before. How to fix it to work as before? PS: I mistakenly chose VS-code target and it's not possible to delete the post and repost. I use STM32CubeIDE on Windows and my issue have nothing to do with vs-code (I don't use it whatsoever)   

Hello everyone,I already asked similar question but I got no sensible answer yet. I am trying to implement the Custom HID drivers in the STM32UG7VJT microcontroller, in standalone mode, so no RTOS. The only thing that I can find from STM32 is this example https://github.com/STMicroelectronics/stm32-usbx-examples/blob/main/Projects/STM32H743I-EVAL/Applications/USBX/Ux_Device_CustomHID that uses the RTOS. I am trying to remove the RTOS from it but until now I didn't even manage to get the descriptors right. The device is enumerated but not recognized. So does anyone have any idea on how to make this work? I already looked at all the tutorials available, they don't fit my case, all of them are based on the H7 family which seems to have different architecture for the USB.  Thank you in advance

I've tried this evening to download STM32CubeIDE on 2 different accounts, 2 different computers, a phone, and have reset my computer and also deleted my cookies but still will not download. Nothing happens after I accept the terms and conditions. I have also tried to download as a guest the link from the email still just takes me to the download page but it won't download.

A while ago I auto updated to 2.0.0. Prior to that, I was able to change the repository location. The instructions were nicely noted here: https://community.st.com/t5/stm32cubeide-mcus/how-to-change-the-repository-directory-location/m-p/114938 Now with 2.0.0, the Firmware Updater option is missing from from Windows -> Preferences:  I don't see anything listed in the release notes document found here: https://www.st.com/resource/en/release_note/rn0114-stm32cubeide-release-v200-stmicroelectronics.pdf Has this functionality been completely removed and we're now forced to have our repository in our User account folder on Windows? FWIW, I also don't see a way of changing it in CubeMX. Thanks, C-Coder

Hello,I’m using STM32CubeIDE with a project generated directly from STM32CubeMX for the STEVAL-ASTRA1B board.EnvironmentBoard: STEVAL-ASTRA1BFirmware Package: STM32Cube FW_WB V1.24.0CubeMX example/template: FleetManagement (default generated project)IDE: STM32CubeIDEToolchain: default CubeIDE build settingsWhen building the generated project, I get two compilation errors:1) Master_Clock_Accuracy field not found (should be Central_Clock_Accuracy)File: STM32Cube/Example/FleetManagement/Src/astra_app_ble.cLine: ~603Error:STM32Cube/Example/FleetManagement/Src/astra_app_ble.c:603:81: error: 'hci_le_connection_complete_event_rp0' has no member named 'Master_Clock_Accuracy'; did you mean 'Central_Clock_Accuracy'? 603 | handleNotification.Master_Clock_Accuracy = connection_complete_event->Master_Clock_Accuracy;Workaround/Fix:Replace Master_Clock_Accuracy with Central_Clock_Accuracy, e.g.:handleNotification.Master_Clock_Accuracy = connection_complete_event->Central_Clock_Accuracy; 2)

Hello so I am trying LTDC testing with cubeide 2.0 but I cannot use  __HAL_LTDC_LAYER_ENABLESo there's not defined LTDC and going and going afterI found that STM32H7S7xx symbol is not working So Is this cubeide 2.0's bug stuffs ?Or there's anything that I did wrong?

(v2.21.0+) (Cube IDE)Hello everyone,I am currently working with the STM32N6 DK 570 board for an ST Innovation Fair 2026 project and wanted to share an important observation related to binary signing and boot behavior, which may help others working on this platform especially first-time users.Since the STM32N6 series has no internal flash, the device boots only signed binaries from external memory. Unsigned .bin or .hex files generated directly by STM32CubeIDE are rejected by the hardware, which is expected, but not very clearly emphasized in the current documentation.Observed Issue: Header Alignment RequirementWhile signing binaries using STM32_SigningTool_CLI v2.21.0 and later, I faced repeated boot failures (black screen) even though the binary was correctly signed.After debugging, I observed the following:The STM32N6 ROM expects the application header at a 0x400 offsetNewer versions of the signing tool do not automatically pad or align the binaryWithout explicit alignment, the First

I want to change heap4.c to add a feature.  I want the heap program to tell me, when I ask for memory and I get a Malloc Failure, I want to know the shortfall.  I have a method for this, which works, but involves changing heap4.c.  When I do that, any time I go back to the configuration program to change the IOC file, the program regenerates all files.  Since heap4.c does not have a user section, and certainly not there, the changes are overwritten.I have a similar problem in main.c, but if I can do one source change, I can do others. 

Hi,at this moment I have two projects (BootLoader and Application), but I have some shared files.What is the best solution to share those files? Is it possible to create an 'empty' project, with only those shared files, and make the two projects depending on it?Or is it possible to add a directory, which can be handled by both projects?Thanks in advance.Greetings,ErX

Eclipse and hence CubeIDE has this problem described here (and in the title):https://github.com/eclipse-platform/eclipse.platform/issues/2244#issuecomment-3533012572For Eclipse there is a patched version out there.Is there a timetable to get this fix out for CubeMX?Or instructions how patch CubeMX?