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While designing Electronic speed controllers for a 6s battery, an stm32 was decided to use as the MCU.    After receiving our first PCBs, we were unable to successfully program them with the stlinkv3 minie. Attached is an image of the schematic of where the STM lies on the board as well as the attached components. When the boards first came in the stm32 was able to be flashed with a program, but after the first flash they could not be connected to any more. This is with using an external power supply as the stlink v3 didn't seem to provide power as the prg tool was unable to detect the chip.   After continued testing (and changing out the mcu) the issue persisted although with a slight deviation, it would allow us to program it once or twice but when we clear the flash, it would lose connection and throw an error of dev_target_held_under_reset. In case it is relevant, the only connection type that can even read the flash of the chip is hot plug but that is unable to chan

Hi,I am trying to make a basic Enhanced Advertising low power application using Arduino IDE.I use a standard P-NUCLEO WB55.I need Arduino IDE because this application is intended to be open for modifications.The current STM Documentation (https://wiki.st.com/stm32mcu/wiki/Connectivity:STM32WB_BLE_Arduino) is more than one year old and is outdated.I succeed in lighting the 3 color led by redefining their PIN OUT according with the electrical schematic. But I was not even able to get print messages (I guess the Serial is not properly define for that board).Where can I found a basic Arduino Example.I did already the update of the M0 FW which is supposed to be HCI compliant. FUS version V2.2.0.0 and STACK version v1.24.0.3.Thanks in advance.Edited to fix link.

I get this Error when trying to install the Cube Programmer V2.5.0 on Windows 10 (latest update).I have installed Java jre 1.8.0_261.Thanks for any help com.izforge.izpack.api.exception.IzPackException: An error occuredin java.lang.Thread.run() at null:-1in com.izforge.izpack.installer.unpacker.UnpackerBase.run() at UnpackerBase.java:241in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:319Caused by: com.izforge.izpack.api.exception.InstallerException: File execution failedin com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:299in com.izforge.izpack.installer.unpacker.UnpackerBase.unpack() at UnpackerBase.java:483in com.izforge.izpack.installer.unpacker.UnpackerBase.executeFiles() at UnpackerBase.java:959 

Dear allI am using STM32H563 and interface with some CAN bus sensors to receive and sometimes send data to them. The CAN bus sensors are developed by a partner company. I developed my software refer to FDCAN_Com_IT example provided in IDE firmware package. They work fine most of time, but there is an issue has been bother me - for a few sensors, tmy software doesn't receive the message form them, it doesn't generate interrupt simply.  Don't think the sensor module is fault as they can be received by a CANUSB dongle, it seems the issues are with a few fixed sensor modules only, so i am wonder what I have done wrong to miss the message, on Logic analyser, message can be seen although sometimes it is with error, but most of time, they are fine, just doesn't reach my ISR. Regards!Ping

   Hello, I would like to ask about a question regarding “STM32N6570-DK for gesture recognition control applications.”I have downloaded the official example x-cube-n6-ai-hand-landmarks-main and reviewed the DataBrief of the development board. Since the board itself does not contain internal Flash, the file _htmresc/FSBL.PNG in the example clearly indicates two possible solutions:User APP programmed into SRAM (address: 0x3400 0400 ~ 0x3418 0000)User APP programmed into external Flash (address: 0x7008 0000 ~ 0x7FFF FFFF)Following the instructions in README.md, I executed the following steps:~make -j8~ Program the Firmware in the External FlashAfter building the application, it is necessary to add a signature to the binary file:~STM32_SigningTool_CLI -bin build/Project.bin -nk -t ssbl -hv 2.3 -o build/Project_sign.bin~ After obtaining the signed binary file, I manually programmed it to address 0x70100000.(The files ai_fsbl.hex, hand_landmark_data.hex, and palm_det

I've been trying to flash a .tflite model onto my NUCLEO-L433RC-P, using STM32CubeMX and Keil uVision5 initially, and later with STM32CubeIDE. But for some reason I keep getting issues either with "Analyze" or with generating the code. I am on Windows 11. My computer is in the chinese language, but my system local is English (US).​Initially, while using CubeMX/Keil, I was able to successfully analyze my model after downgrading to the 7.1.0 version of Cube-AI. Before that, with the newest version, I get "TOOL ERROR: 'utf-8' codec can't decode byte in position x in position y: invalid start byte". But after analyzing and successfully running the model on desktop, when it comes to generating the code to run on my device, it refuses to generate any .h files nor the middlewares folder. I looked online and couldn't find any solutions, and decided to download CubeIDE as I thought that this might fix the issues. But after downloading CubeIDE, I faced even more issues, as now on top o

Environment: STM32L4 + 32.768K LSEFunction: Wake up and work once every hour, then enter stop2 mode. During the one-hour sleep, wake up every ten minutes to feed the external watchdog.Problem: The device resets directly when waking up every ten minutes.Current known information: The device was tested in the company for over twenty days without any issues (including restarts, freezes, etc.). After the prototypes were given to customers, problems started to occur in about 10 to 20 days. Currently, there are two failed devices. After power cycling, the devices did not return to normal. External reset also did not restore them to normal. Re-flashing the devices allows them to operate normally, and they are currently under continuous pressure testing to see if the issue will recur.Current debugging progress: When the device restarts, the nRST pin has a low-level time of less than 1ms. The 3.3V power supply pin of the MCU is stable as observed by the oscilloscope. The TP5010_DONE_Pin has a 4

I am trying to deploy encoder only transformer model on STM32 by converting pytorch model to onnx format first and then using STM toolchain (STM32 CubeAI). However, I am constantly getting this error when I analyzed the model:TOOL ERROR: cannot reshape array of size 0 into shape () I tried to debug my model but couldn't find any issue in it. Any guidance will be appreciated. Thank you.

Hey Guys,I am currently in the process of running an object detection model on the N6. To make it accelerated on the NPU I quantize it during Training (QAT) in pytorch. I made some adjustments to the exported QAT model in onnx to make it run on the n6 NPU (I compared the original onnx output before and after my transformations and they are the same).When i try to validate my Model on the Desktop (MCU) however i get completely different output for the c model:This is a part of the onnx model in netronThe input is quantized and the output notWhat i observed is when i remove the layer after the Conv->Transpose->Reshape the Output of the C model somehow matches the onnx model:Why is this the case? Is there any problem with the slicing and reshape layer because St has channel last and not first?Thanks for the help,If you need more context let me know

Hi there!I already configured LwIP package and make it work on a NUCLEO-H755ZIQ following @Adam BERLINGER gude in the Knowledge base section:https://community.st.com/t5/stm32-mcus/how-to-create-project-for-stm32h7-with-ethernet-and-lwip-stack/ta-p/49308 Well, trying to move the LwIP heap memory to a larger memory location I experienced a n unexpected issue:When I locate the heap in the DTCMRAM of the M7 core, communication will no more work at all(no ping, no tcp connection...).Locating it in D1 (AXI RAM) or D3 RAM all work as expected.I checked also the MPU configurations ad all seems correct, it seems that in DTCMRAM there is a different behavior. Just for my comprehension, there is something wrong in locating such heap into the DTCMRAM?Thanks in advance! iTTy 

Greetings,in one of my current projects i am using a STM32WB55 as peripheral which requests a secure connection with the host (bonding mode = 1). When the connection is newly established, everything works as expected - the "pairing" dialogue pops up once and when the procedure completed, the connection works. With Android there is no further problem.But iOS causes inconvenient behavior by not automatically re-pair when the information got stale or lost. I didn't find a way to at least reopen the pairing dialogue on a secured connection. iOS terminates the connection as soon as it receives a "key missing" error and there seems to be no way to let it re-pair. The user has to "forget" my device and restart the pairing procedure manually... However some approachers at least caused different behaviour:Set the bonding mode to 0 in the authentication requirements.If not done already remove the pairing information in iOS by forgetting the device.Do one of the following:issue aci_gap_slave

Reporting that this bug is sitll present in CubeMX v6.16.1Solved: We found a bug while using Hardware JPEG. - STMicroelectronics CommunityStill JPEG_SWAP_RG, not JPEG_SWAP_RB.I wish there would be user defined section in jpeg_utils.conf.h to workaround it.And there's another bug:Every time I regenerate code, CubeMX erases Utilities/JPEG folder. So the package code has to be manually restored.

I designed a PCB using the STM32H743 in the TFBGA240 +25 package.When I power the board, the STM32 gets hot. I measured the voltage across the VCAP capacitors, and it is 2.2 V, while it should be a maximum of 1.35 V.What could be causing the VCAP voltage to rise to 2.2 V?

ST moderator: updated the title with the MCU part number. I am working on an embedded web interface hosted on an STM32-based system using lwIP. The interface serves basic HTML pages along with multiple product images for browsing and preview.On pages that contain several high-resolution images, similar in structure to pages like  this: I notice slower load times and occasional rendering delays when everything is served directly from the MCU web server.For those with experience building embedded web servers on STMicroelectronics platforms, what techniques have you found most effective for improving image delivery and overall page responsiveness?Examples could include compression approaches, external memory usage, filesystem choices, or caching strategies.Looking for practical guidance based on real implementations.

I’m working with TouchGFX in STM32CubeIDE. After creating a new project and copying over the IOC file and pin configuration from the verified design used for my custom PCB, I’m now running into errors. Some components fail to build, and I’m getting “file not found” errors for certain header files—even though the files clearly exist and I can open them in the IDE.Do you have any suggestions for fixing include paths or linker settings to resolve this?  

I have an STM32H563 running FreeRTOS and LwIP with the netcon interface.For the most part its working OK, however when I send a lot of data (around 250KB/s for a few seconds) it crashes with a HARD_FAULTIt looks like the memory (pbufs) are being corruptedThe driver (etherentif.c) is based on LwIP/LwIP_HTTP_Server_Socket_RTOS/Src/ethernetif.ctaken from the STM32H7 cubeIs there an updated driver for the STM32H5 or one with known reliability ? 

Expected Log using UART :[BOOT] UART initialized successfully[BOOT] Starting ThreadX kernel[NET] NetX Duo initialization started[NET] IP stack and protocols enabled[TX] ThreadX kernel running[NET] NetX application thread running[NET] Network stack ready[NET] Static IP: 192.168.1.1But the it breaks at [NET] NetX application thread running and i have found the following error using debugger and stucked at the error, so need guidance on bring up of Ethernet and perfect log using the UART  I want to send the data from the pc to the STM Board through the ethernet [using] TCP and store the data at some memory so initially i want to bring up the flow and stucked at the error. main.c/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2026 STMicroelec

Hi,I want to kick ADC1 IN5 with the Timer TIM2. I'm working with CubeIDE.I select:ADC1 -> ADC_Regular_Conversion_Mode -> External Trigger Conversion Source  -> Timer 2 Trigger Out eventTIM2 ->  Trigger Output (TRGO) Parameters -> Update EventBut ADC1 does not run, Data Register is constant.If I kick ADC1 by software everything is fine, I get some noisy numbers.TIM2 is running, the count register is counting.Why does TIM2 not kick ADC1 by the TRGO event?This setup used to work fine on STM32F303. What do I miss on the STM32F429?THX CheersDetlef 

In rm0316 rev 10 for the stm32F303x, the documentation for the ABRQ bits in the CAN_TSR transmit status register states: Setting this bit has no effect when the mailbox is not pending for transmission. I am finding on my STM32F303 that setting ABRQx when the mailbox is empty will actually clear the RQCPx and TXOKx status bits in the CAN_TSR. This effect is important to note, because if you're using the TXOKx bit to determine if the message was transmitted or aborted and ABRQx was set after the mailbox finishes its transmission and becomes empty, you will think the message was successfully aborted (because TXOKx is cleared by the late abort) when it was actually transmitted. Even if you disable interrupts and check the mailbox status immediately before setting the ABRQx bit, it seems like there is still a race condition where the mailbox transmission could complete between the read and write operations, which could occasionally cause the abort to be late.  Is there a way to do this

Hi everyone,I am trying to train a large dataset in NanoEdge AI Studio, where each class is around 500 MB in size.Totally 5 class.However, I am facing limitations related to the data structure, memory usage, and training workflow in NanoEdge AI Studio. I would like guidance on:Recommended data structuring or segmentation methods for very large datasetsBest practices to handle or reduce large data sizes (windowing, feature extraction, downsampling, etc.)Any tool limitations or configuration settings to be aware ofPossible alternative approaches if direct training with such large data is not supportedIf anyone has experience training large datasets with NanoEdge AI Studio, your guidance or references would be greatly appreciated.Thank you in advance for your support.Best regards,Vijepradeepan

hi, ive noticed that hand landmarks pre built binarys uvc output does not work on the C02 revision NUCLEO-N657X0-Q but does work on the c01 rev, could anyone guide me on how to get this demo up and running ont he c02?

Hey ho everyone I'm a Noob with all this, just surface level knowledge.I'm on Linux ((Ny)arch btw.) newest version. First everything worked switched boot mode (cant remember if boot 1 or 0 as no combination works now) and i could connect. Then i wanted to test 5V pins and out of laziness i shorted +5V with and LED. Had an error on the power status, repluged and everything worked again (proceeded testing pins without shorting). suddenly a few days ago i had the dev connect error solved it via boot 0 and 1 both to the right on the next day suddenly not even that worked. did a bit of switcheroo that worked until it suddenly didn't even with any position. tried reinstalling (MX, Prog and IDE) tried adding myself to the uucp group didn't work tried the whole procedure as root but Nyarch wouldn't let me open my files and i simply was to lazy to do it via CMD. now i have sometimes the problem with DEV_CONNECT_ERR in any boot position and sometimes it just tells me UR connection mode is define

I'm very new to this so be kind.  I've been working on a display for CAN data.  I have the display designed and it works and while building code for the CAN and using the GPIO5 LED for testing, when I Run it, I get a garbaged display.  I have a working sample project that was provided to me as a guide, when I run it, it works fine, but when I go back to my project, part of the other project is still being displayed.  It's as if it's not fully erasing and programming everything.  I did some research and found suggestions to select Full Chip Erase, but there isn't one. 

Hello, I was writing some code and one day a handler_reset() appears in the debug panel It is said that appears because it give the opportunity to the user to debug from the very begining. But why? if there is already the ability to set the breakpoint in the main...  I cannot assign a value to a variable.  And the other things is the fact that since it has appear I cannot longer debug and the variables make no sense. What causes all that and which is the solution??Thanks.          

Hi,I am currently facing an issue while connecting to the STM32 board using STM32CubeProgrammer. The tool consistently shows the error: "Unable to read device ID from ROM table."I have already tried the following troubleshooting steps:Performed a hardware/software/core reset using the RESET buttonVerified that all required supply voltages are correctChecked the hardware connectionsDespite this, the programmer is still unable to establish communication with the M7 core via ST-Link. It appears that the device is not being detected properly, and at the moment the board has become unusable.Could you please guide me on possible causes or additional steps I can take to resolve this issue? I would be happy to provide any further information if required.Thank you for your support.Best regards,Prathiksha