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I’m using CubeProgrammer v2.23.0 with the SDMMC_STM32N6570-DK external loader (no additional loaders). I have the boot switches in the boot0=L, boot1=H positions. I have looked at all the posts similar to this one, however none of the suggested fixes have helped.When I try to program the eval board I get the following error message ... NOTE: I am able to download a new GUI directly from TouchGFX to external flash and it is fine. So, this is obviously an issue with CubeProgrammer/settings within? 

Hello,ST announced the STM32V8 series some time ago (https://www.st.com/content/st_com/en/campaigns/stm32v8-high-performance-cortex-m85-mcu-z11.html), but there haven’t been any updates since then.I have a couple of questions:How can we download the datasheet for the STM32V8 series?When will the Nucleo or evaluation boards for this series be available for order?Thank you in advance for your help.

I purchased  X-NUCLEO-53L9A1 with NUCLEO-H563ZI as it was recommended by ST. I just want to load the binary and see a simple ranging output value array. The binary provided didn´t work. Now it seams like they recommend  Nucleo N657X0. Could please someone clarify what board should I use so that there is a working binary provided?

Hello, I recently encountered this error while deploying an AI model on an STM32N647 for performance verification. I noticed that others have encountered the same issue on the official website, but following the suggested solutions did not resolve my problem—I’m still getting the same error. This issue has been troubling me for a week now. Are there any other ways to resolve it? 

Built a minimal on-device training stack for STM32 — fits in 608 bytes RAM total.The problem: Adam optimizer needs exp_avg + exp_avg_sq — 2× parameter RAM. On STM32F103 (20KB SRAM) with a 5K parameter model that's 40KB just for optimizer state. Doesn't fit.What I built:GravOptMini — momentum optimizer with quantile-based gradient freeze. Only exp_avg (1× param RAM). Freezes low-gradient parameters to reduce compute.W-Twin Lite — power-law baseline fitted on early steps, tracks deviation. Pure float32, no scipy, no numpy. Rolling window of 20 values. ~240 bytes.Benchmark (Python simulation, STM32 memory constraints):- Model: 46 params, 184 bytes- GravOptMini state: 368 bytes (exp_avg only)- W-Twin Lite: 240 bytes- Total: 608 bytes- MNIST accuracy: 93.2% vs Adam 97.4%- W-Twin overhead: 3.9% per step- Detection: anomaly caught 96 steps before visible loss divergence, 0 false alarms on clean runNext step is a real STM32 test with physical hardware. C port of both components is the plan.Has

Hello everyone. I read that V8 will become available for OEM in Q1, but is there any estimations when V8 will become available for independent engineers or maybe even NUCLEO V8 will be released?

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?

Hello everyone, I have seen that is possible to generate a pdf report using STM32CubeMX (version 6.18.1) as shown in the image: Is there a way in order to launch a command line to run this operation? In order to automatize my development process.Thank you in advance, Alberto

I am using the STM32H5F5 and plan to implement the Secure Manager. I would appreciate clarification on the following questions: Can the user application key be provisioned to the OBKey area during Secure Manager installation? After the Secure Manager is installed, can the user application write a key to the OBKey area? How can an application—secure or non-secure—read a provisioned OBKey?

SummaryOn my STEVAL-VL53L9, the VL53L9CX boots, installs FW patch 0.17, reaches STREAMING with all error bits clear — and then faults on the very first frame. The reference SPAD array reports zero amplitude on every channel, as if the VCSELs never fire.I have reproduced this with two different VL53L9CX parts and three independent host implementations, each of which is known to work on another STEVAL-VL53L9. I have run out of things I can change from software, and I would like to understand what the firmware error codes mean.SetupBoard: STEVAL-VL53L9, VL53L9CX hand-soldered by me Host: ESP32 (DevKit v1) through the J2 header, plain I2C at 400 kHz, address 0x29 Clock: on-board 12 MHz Y1 (R25 removed, R24 fitted, R23 removed); EXT_CLOCK = 12000000 J3 (Host IO) = 3.3 V; VDDA_CFG = 2.8 V, VDDIO_CFG = 1.8 V XSHUT driven by the host, SYNC_IN tied high, INTR not used (FRAME_READY polled) FW patch 0.17 (9,865 bytes, byte-identical to vl53l9_patch.h in STSW-IMG053 / 53L9A1 BSP)SymptomDefault pro

Hello,I’ve run into what appears to be a documentation error or a H/W bug with the GPDMA on the STM32U585. I’ve set up a 512-byte circular DMA buffer with HT and TC interrupts to capture UART Rx data.  I’ve also enbaled DTE and SUSP interupts because I want to handle UART IDLE detection. In the UART IRQ handler (caused by IDLE), I suspend the DMA channel.  The DMA IRQ handler then triggers on SUSPF and I grab the current BNDT value, update an internal index, and then resume the DMA.  The DMA continues until the block is complete (TC), then reloads only the CxDAR from memory (only UDA set in CLLR update bits).  According to documentation, the BNDT value should be reloaded from an internal value stored when the channel was enabled.  This works as expected until the TC after suspend/resume event.  After a suspend/resume, the BNDT appears to reload a different value, and continues to use that new value. The only work around I found was to add UB1 to the CLLR update bit fields and provide a

I configured ADC1 to be triggered by TIM2_CH2 and TIM2 compare channel 2 on STM32F429 with CubeMX, and enabled their interrupt, TIM2 CC2 ISR was run but ADC EOC ISR not run. I tested both by LED and by debug in CubeIDE, both results were the same. When debug in CubeIDE, after TIM2 CC2 ISR was run, STRT=0 and EOC=0 in ADC1 SR, which indicated that ADC1 was not triggered. However, if I configured ADC1 to be triggered by TIM2_TRGO and TIM2 trigger output from Update event, ADC1 was triggered.My settings in CubeMX:CubeMX and CubeIDE project files:

From the manual for the P-NUCLEO-WB55 USB dongleBy default, the embedded STM32WB55RG microcontroller is supplied by 3V3, but the board offers another possibility to supply the device through the extension connector. The 3.3 V can first come from the USB and the LDO (5 to 3.3 V). Moreover, STM32WB55RG can be supplied by an external source, between 1.8 and 3.3 V. If the USB connector cannot supply the MCU, it is necessary to turn SB4 OFF and connect a power supply to the extension connector (pin 6 of the CN1 connector). So when I look at SB4 on the board it looks like it is unbridged, see pic below. Does this mean its off? If so how come I can still power it through the USB-LDO 3V3 route? I would like to power through the connector so I can gauge how much current its drawing without USB connection.  

IssueI am working on an iOS application that uses the ST25SDK for NFC operations.The ST25SDK documentation indicates that the iOS SDK is based on J2ObjC 2.4. I downloaded the J2ObjC 2.4 source and attempted to build it locally on an Apple Silicon Mac.However, I am currently unable to complete the J2ObjC 2.4 build. I have also tested J2ObjC 3.1, which builds successfully in the same environment.QuestionCould you please confirm whether J2ObjC 3.1 is supported/compatible with the ST25SDK iOS version I am using, or whether the application must specifically use J2ObjC 2.4?In particular, I would like to clarify: Is J2ObjC 2.4 a strict requirement for the ST25SDK iOS Objective-C sources? Can J2ObjC 3.1 be used as a drop-in replacement if it successfully builds? If J2ObjC 3.1 is not compatible, are there any required patches or source changes that would allow the ST25SDK to work with J2ObjC 3.1? Is there an official/prebuilt J2ObjC 2.4 distribution recommended for the current ST25SDK, so

Hi ST expert,I am developing a 3P4W Smart power meter C&I class, we are planning to design a multi-rate data sampling! S1 for power metrology by dedicated metering IC ADE9000, S2 for feature-stream acquisition NILM inference at 4 kHz continues sampling rate by internal ADC of STM32H755 and S3 for transient capture at 20kHz triggered capture by ADS131M08. Communication that STM32H775 would handle including Wi-Fi, RS485, 100Mbit ETH, SD card 32GB(eMMC optional) status LED x3 and USB-C for programming and debugging. We also have AI model to build into the MCU for edge inference, time series model! I not sure if STM32H755 series can handle all this tasks or not. Could you please help me evaluate this platform for my design? Additional info, please let me know. Thank you.

Hello Team,We have manufactured 500 boards using STM32WBA52CGU6. During testing, we tested 50 boards, out of which 5 boards are not advertising BLE, while the remaining 45 boards are working normally.We have attached the schematic and PCB layout screenshots for your reference.Our PCB is a 2-layer board, and we have not followed a controlled 50 Ω impedance for the RF trace. Could this be contributing to the BLE advertising issue on these 5 boards?Could you please review the attached schematic and layout and help us debug this issue? We would also appreciate your guidance on the key parameters or measurements we should checkon the failed boards compared with the working boards.

Hi ST Community,I am designing a custom board with STM32WLE5CCU6 (UFQFPN48 package) for a LoRa application in the 470–510 MHz band.I will use RFO_LP only, with +14 dBm output power and VDD_MCU = 3.3 V.Could you please provide the ZOPT (optimal impedance) for the PA output matching network at 475 MHz for this configuration?AN5457 Appendix A only covers 868/900/915/923 MHz, so I cannot find the data for 475 MHz. If there is any reference design or application note for this frequency, please point me to it.Thank you very much.

The name of the variable in the Live Expression in dark mode is wrong It should be white instead it’s blackVersion: 2.2.0Build: 29186_20260626_0934 (UTC)

In STM32Cube_FW_H7RS_V1.3.0, file Projects/STM32H7S78-DK/Applications/ROT/OEMiROT_Boot/Inc/flash_layout.h:The macro OEMIROT_LOAD_AND_RUN has 3 possible settings, and we're using the NO_LOAD_AND_RUN to execute code (in external flash) in place.However, we're also using external RAM in our application, and this must be enabled in the bootloader, as the app attempts to initialise values in external RAM at startup.Unfortunately, the external RAM is only initialised if you select LOAD_AND_RUN_EXT_RAM.There is a workaround: in boot_hal.c and low_level_ext_ram.c, replace every instance (3 in each file) of:#if (OEMIROT_LOAD_AND_RUN == LOAD_AND_RUN_EXT_RAM)...with something like:#if 1// (OEMIROT_LOAD_AND_RUN == LOAD_AND_RUN_EXT_RAM)For the future, would you consider having an option to run in place and enable external RAM?Thank you.  

Hi, I find the startup file generated by CubeMX2 for my STM32C551xx MCU doing something weird that I couldn’t understand. /**  * @brief  This function is the Reset Handler called on controller reset.  * @param  None  * @retval None  */__WEAK __NO_RETURN void Reset_Handler(void){  __set_PSP((uint32_t)(&__INITIAL_SP));  __set_MSPLIM((uint32_t)(&__STACK_LIMIT));  __set_PSPLIM((uint32_t)(&__STACK_LIMIT));  SystemInit();         /* CMSIS System Initialization */  __PROGRAM_START();    /* Enter PreMain (C library entry point) */}The code shown above reset the PSP pointer rather than MSP. I’m not sure if I do some misunderstanding about the stack pointer, as PM0264 indicated that MSP should be the one reset to the value retrieved by the reset handler. 

In the STM32CubeIDE project generated by STM32CubeMX for the default configuration on STM32F429I-DISC1 board, I can not find any reference to TIM1 except in the init function, i.e. ITM1 is initialized but not start. What TIM1 is used for?

Greetings,I have finished the schematics of my custom STM32MP13X based PCB, My aim with this PCB is to learn high speed digital circuit design & how the board bring up is done & various other things like loading RAM's timing information from an EEPROM to initialize RAM, etc.I would appreciate if my schematics could be reviewed & any potential issues could be pointed out before I start my PCB design (or worse, produce the PCBs) because I’m a student who’s funding this project from my part time job & I really don’t want to make an expensive mistake.The schematics are majorly based on STM32MP135-DK's reference schematics (MB1635) & I have attached the schematics (PDF) along with BoM file for package size information, etc.I would also like to mention that the schematics have been designed to keep costs low, This is also why most of the components will be sourced via LCSC & This is also why there’s no eMMC on-board. I also omitted the termination resistors on DDR bec

Hi all, i have very simple gpio pushbutton debounce code, but 50% of the time it still gets a double-bounce (led toggles twice), i.e. the debounceCount is double incremented as the interrupt service routine is mysteriously called twice. How can this be if the interrupt is immediately disabled?.  Is the switch bounce sometimes so quick that two presses are queued up before the interrupt is disabled?Within main() , if the button is pressed, there is a while(1) if(butIsPressed) {butIsPressed=FALSE; HAL_Delay(1000); and then HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);}void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){HAL_NVIC_DisableIRQ(EXTI4_15_IRQn);debounceCount++;HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_3); // Toggle The Output (LED) PinbutIsPressed = TRUE;} 

I have a board which is in the STM32V8 family but i cant find anything about its datasheet or anything to work on it how can i work on a board which has no data sheet or any pin out things , even if i create a file using stmcubeide i cant find its ioc file for that particular project 

Hi, I have just installed STM32 Cube IDE 2.0.0 for Mac OS Apple Silicon, and then installed the GCC ARM for STM32 10.3-2021.10 toolchain through the toolchain manager. However when I import a project using this toolchain I get the nullgcc error.I also tried creating a new project and setting the toolchain to 10.3-2021.10 but still get the same error.When I look into the eclipse plugins folder searching for the toolchain binaries, I only see a .jar file but not the actual compiler folder with the binaries ls -l /Applications/STM32CubeIDE.app/Contents/Eclipse/plugins/ | grep gnu-tools-for-stm32Jul  9 11:22 com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.10.3-2021.10_1.2.100.202508251041.jarJun 26 11:52 com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.14.3.rel1.macosaarch64_1.0.0.202602081740un 26 11:52 com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.14.3.rel1_1.0.100.202601091506.jarJun 26 11:52 com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32_2.