STM32 MCUs

During debugging its showing pop_up notification like  Failed to enable live expression, connection failed but when i am click ok, after that its start downloading. what could be the reason for that one.   

HelloI'm developing on the NUCLEO-N657X0-Q board using the STM32N657X0H3Q.I'm trying to trigger the ADC when the CCR value on CH2 of TIM1 meets the up counter of TIM1. This triggers the ADC conversion. Once the ADC conversion is complete, a callback function is triggered to store the ADC value in a variable. To verify the callback function's operation, I'm trying to toggle the GPIO.When I debug and observe the waveforms, I see the waveforms on CH1 and CH2 of TIM as designed. However, the problem is that the GPIO toggles aren't observed. When I check the ADC values ​​in debug mode, the g_adc_raw value is stuck around 1290 and the g_adc_mv value is stuck around 566. Connecting the ADC pin to GND doesn't return 0.The STM32n6 example, ADC_SingleConversion_TriggerTimer_DMA, works normally, so there seems to be nothing wrong with the board itself.I plan to control the DC-DC converter, so I need to read the value for each ADC conversion and run the controller, so I don't think DMA is necessar

Hi everyone,A slightly different topic from the usual embedded discussions, but something many working professionals here might relate to.For those balancing engineering careers and parenting, choosing the right daycare can be a major decision — especially for infants and toddlers (0–3 years old). While researching options for a licensed infant daycare near Edmonton AB, I noticed that many centers now incorporate structured early learning programs, digital communication systems, and real-time parent updates.It made me curious from a tech professional’s perspective:How important is licensing and regulatory compliance compared to reviews?Do you prefer daycare centers that use digital parent apps for daily updates?Does structured early development curriculum matter at the infant stage?Have you seen technology (monitoring systems, check-in/check-out systems, reporting dashboards) influence your decision?Many of us work in fields where safety, reliability, and compliance are non-negotiable.

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Greetings, I am working with the STM32U585RI and a sensor that asserts an interrupt on the MISO line. I would like to know whether this setup is feasible, and if so, how best to implement it. One approach I have considered is to use a separate pin (LPGPIO) to monitor the interrupt condition and then trigger the SPI sequence. However, during ongoing SPI transactions, I would need to temporarily disable the interrupt feature and re‑enable it after each transaction. My question is, how can this be achieved using LPBAM? Is there a recommended way to configure LPBAM so that the interrupt handling and SPI transfers can coexist without conflict? Any suggestions or guidance would be greatly appreciated. Best regards, Rasool

I am unable to successfully run zephyr samples/bluetooth/peripheral on nucleo_wb55rg.  The software appears to enter a fault handler.  The basic blinky project does work (samples/basic/blinky) Wireless stack stm32wb5x_BLE_HCILayer_fw.bin v1.24 is programmed and running (see attachments)  I have also tried v1.23 without success. Is there a known good combination of software and hardware for stm32 BLE and zephyr?  

Hello, We want to use the STMH723ZG with the Motor Control SDK. To do this I cannot find the .json file support for the board in the motor control workbench. Could I use another .json file from one of the fully-supported boards like the H745? Also, we are using custom power electronics + motor setup so to my knowledge our board has sensors it outputs to the stm + it takes a pwm 3-phase input from the stm to spin the motors. What all info do I need and what process do I follow to get a project built for this setup with the motor control SDK.

Вітаю. Створив DC-DC перетворювач на мікроконтролері G4 серії. У я кості регулятора використовую апаратний FMAC, current mode. Моє питання стосується перерегулювання рівня вихідної напруги при старті перетворювача. На борту маю апаратну кнопку вимкнення живлення, а саме фізичне від'єднання акумулятора від перетворювача, а також тактові перемикача для користувача, якими безпосередньо вмикається та вимикається процес перетворення, та налаштування користувачем деяких параметрів. М'який старт програмно не реалізовано. Ситуація наступна, перший пуск перетворювача після увімкнення кнопкою живлення проходить бех перерегулювання, що я можу підтвердити осцилограмами. А ось усі наступні пуски супроводжуються короткотривалим перерегулюванням рівня вихідної напруги. Будьласка, хто має бажання мені допомогти, відгукніться, за запитом надам усю необхідну інформацію. Осцилограми хочу скинути наступним постом.

I read UM3451 (STM32N6xx security guidance for SESIP level 3 certification) chapter 3.2.2 Secure installation and I wonder why aren't the FSBL signature public keys not written into OTP fuses? Only the 8 words (32 bytes) of hashes of all 8 public keys are written by the instructions.Chapter 2.1. Secure boot here in wiki explains that one of 8 active public key hashes in FSBL binary header is compared to the one in OTP and if they match, then "that" public key is trusted. But it doesn't explicitly say where does "that" public key come from.From UM3234 concept drawings (Figure 12-13.) I begin to understand that public key (in some changed form) is provided with the FSBL authentication extension header. So does it mean the MCU does not know the public key and it trusts the provided public key based on the hash table match only?Am I missing something here, but it appears to me that uniqueness of public keys have been heavily reduced. Since each public key hash is individuall

Hello,Is it possible to power this board with an external 3.3 volt supply while still having the st-link active for debugging purposes? If not, how else can I debug my firmware? I've looked through the UM2592 for the dev board, but can't seem to nail down my answer. Any advice is appreciated. Thank you.

Hi,I am testing the ECC on DTCM on the STM32H7A3ZI.  At start of day I initialize all of DTCM apart from a single test location.  I have a test which reads from that uninitialized location and successfully provokes the SRAM ECC interrupt, correctly reporting the address for the uninitialized location.  (I am following application note AN5342).However, I am finding that the same ECC error is raised in other circumstances, when I am confident that my code is not reading the test location.  This happens when the IDE is not connected, so it is not the IDE which is reading that location.I have another test that provokes flash ECC errors, and it is currently the code of this test that somehow provokes the SRAM ECC error as well as the flash ECC error.  However I don't think this code is reading the uninitialized location (and I have also seen other code provoke the problem).  The address reported in the FAR register is always that of my uninitialized test locati

Hello, In my STM32WBA65 project using FreeRTOS, I tried to create a hot-attach debug configuration.It works OK except for one problem : the RTOS proxy does not know what it is working on, as it seems to rely on the parameter imageFileName in imagesAndSymbols. Since replacing imageFileName with symbolFileName is necessary to get a hot-attach configuration (along with "serverReset": "None"), this is a problem. The problem seems to be that imageFileName has two roles : 1) providing the binary used by the RTOS Proxy and by the loading mechanism and 2) telling the system that we want to load said binary into the target. Is there a way to hot-attach the debugger with RTOS awareness that I missed ?  Below, my launch configuration in launch.json:{ "type": "stlinkgdbtarget", "request": "launch", "name": "Hot Attach", "origin": "snippet", "cwd": "${workspaceFolder}", "serverReset": "None", "imagesAndSymbols": [ { "symbolFileName": "${command:

Hello everyoneI am using a Nucleo H7S3L8 evaluation module am I am trying to get some GPIOs and peripherals to work. I have generated a demo project that toggles a few LEDs and that works. Then I started replacing the GPIO ports (A, B, etc.) and pin numbers in order to get other GPIOs to toggle (I left the rest of the code as-is, really just replaced the letters and numbers). However, I didn't manage to get an output on any of the GPIOs belonging to ports O and P. I tried GPIOO 0 and 4 as well as GPIOP 0-3 and attached the analyzer at CN10 13, 15, 19, 21, 23, 25 with GND at CN10 17 (always one at a time). All these signals do not toggle. Other GPIO banks such as GPIOB and GPIOM work.Are the O and P ports different than the others? Do I miss some special settings? I will later be using the XSPI there, so I will need exactly these pins.I appreciate any help!PS Here are my jumper settings:JP1: not connectedJP2: connectedJP3: only STLK connectedJP5: connected to 3.3 VJP6: not connected

// To regenerate crash, follow these steps // In simulator mode // 1. Rotate screen if (touchgfx::HAL::getInstance()->getDisplayOrientation() == touchgfx::ORIENTATION_PORTRAIT) { touchgfx::HAL::getInstance()->setDisplayOrientation(touchgfx::ORIENTATION_LANDSCAPE); } else { touchgfx::HAL::getInstance()->setDisplayOrientation(touchgfx::ORIENTATION_PORTRAIT); } // 2. Go to other screen application().gotoScreen2ScreenCoverTransitionEast(); // CrashThere is probably a bug after rotating screen in simulator mode. Additionally, in debug mode (on hardware) when I apply screen rotation, it is not validated. If I change screen to another one, rotation is applied but with glitches in pixels.

Hi,I was wondering if there's any reference application or if you have any advice on drivers to capture video from a MIPI CSI-2 image sensor (perhaps Sony or the ST BrightSense image sensors (VB1940 (active) or VD1940 (preview) match the 5.1 MP dimensioning of the STM32N6) with STM32N6x7 or STM32N6x5 μCs?The aim would be to waken up the STM32N6 in response to an external digital input, record video from a MIPI CSI-2 image sensor to SD or eMMC then return to sleep mode.I'd be happy to consider bare metal, Zephyr or FreeRTOS - whatever you recommend.Thank you very much for your help and all the best for 2025!Will

Hello,I am attempting to run a Brushless DC-Flat motor using the STEVAL-PTOOL4A board. However, the system fails right after entering the RUN state, returning an ERROR MC_DP_FAULT (via MC_GetOccurredFaultsMotor1).To resolve this, I tried using the Motor Profiler to identify the exact motor characteristics, but I am unable to establish a connection with the board (see attached screenshot).Motor Characteristics:Nominal Voltage: 12 VDCRated Speed: 10,000 rpmStarting torque: 225 mNmRated Current: 2.18 AWinding Resistance (phase-phase): 0.88 ΩWinding Inductance (phase-phase): 0.331 mHPole Pairs: 7Could you please help me identify the cause of the MC_DP_FAULT error and why the Profiler fails to connect?Best regards,JulesEdit 05/02: I have managed to get the motor running; however, I am still unable to establish a connection to the board via Motor Pilot.

IssueHigher ambient temperatures cause communication malfunctions with XSPI memories.DetailsOur design is heavily adopted from STM32H7S78-DK which also has the same issue described below.The application uses memory-mapped mode for both Flash and RAM as the main operational units. These memories are configured in the bootloader and everything generated using CubeMX. According to the datasheets, all three components (CPU, Flash, and RAM) are specified to operate reliably under the given conditions, and they do function correctly under normal temperatures.The problem arises when the ambient temperature increases from 25°C to 60°C. These temperatures are within the acceptable operating range for all components, as stated in their specifications. Upon reaching higher temperatures, the memories start to exhibit failures. However, further investigation revealed that the issue is not with the memories themselves. When the memories alone are heated, they continue to operate reliably, even at el

Hello,  I am currently looking at the reference designs for STM32WLEx and am interested in board reference STDES-WL5I4IHH. (high band, high power with optimized BOM target for 915MHz/22dBm). As seen on page 6 of:  Data brief - STDES-WL5xxxxx - Reference designs for STM32WL5x and STM32WLEx microcontrollers   When looking at the BOM, the only difference I see between STDES-WL5I4IHH and STDES-WL5I4IHL is the IPD with designator U4. But when looking at the schematics, inductor L3 has no value attached. The BOM states it is 47nH and recommends LQW15AN47NG00. I also checked for STDES-WL5I4ILH which also has 47nH for L3. Is this correct?Do all 3 of these use an L3 inductor with value 47nH?  STDES-WL5I4IHH | Product - STMicroelectronics STDES-WL5I4IHL | Product - STMicroelectronics STDES-WL5I4ILH | Product - STMicroelectronics I am mainly asking this question because when looking at the eval board NUCLEO-WL55JC, there is a switch that changes that i

Hello ST Community,I am currently testing the PWR_DEEPSTOP_RTC example on the STM32WL33CC and I am observing a higher current consumption than expected in Deepstop RTC mode.According to the documentation, the expected current in Deepstop mode with RTC (LSI) enabled should be around 1–2 µA. However, I am consistently measuring approximately 50 µA. The application appears to be entering Deepstop correctly (according to the consumption behaviour). I'm measuring with the following configuration:1. Set the JP2 jumper to OFF.2. Insert the external supply on pin 2.3. Connect GND to CN12.4. Change the position of SW1 (not the default position).Could you please advise what might be causing this discrepancy?Thanks.

Dear ST Community,I'm experiencing an issue with USBX Host implementation on STM32H573RIT6 where disconnect events stop working after enabling Host Controllers FS in CubeMX.Problem DescriptionEnvironment:MCU: STM32H573RIT6 (Custom board)Middleware: Azure RTOS USBX + FileX (MSC Host)VBUS: External constant 5V supply (no USBPD/VBUS sensing used)Connection detection: DP pin basedCubeMX: UX Host FS + Host Controllers FS enabledHAL setting: hhcd_USB_DRD_FS.Init.vbus_sensing_enable = DISABLEBehavior:Before USBX activation: Both HAL_HCD_Connect_Callback() and HAL_HCD_Disconnect_Callback() work perfectly with USB memory stick connect/disconnectAfter USBX Host Controllers FS activation:Initial USB memory connection: HAL_HCD_Connect_Callback() works fineUSB memory removal/reconnection: No HAL_HCD_Connect_Callback() and HAL_HCD_Disconnect_Callback() calledQuestions/RequestsHow to maintain HAL HCD callbacks when using USBX Host Controller

Hi,I'd like to know if execution jumps to the interrupt handler of Timer x only when the CCxIF flag changes state from 0 to 1. What happens if the flag is already set and an event occurs that would have caused the flag to switch from 0 to 1 had the flag been in the 0 state? Would the ISR be called or would it be ignored?I'm using the STM32G473VCH3 controller. Thank you.

STM32WL55 BPSK modulation bitrate for transmission and reception. Transmission is mentioned in data sheet is 600 bit/sec, but need to know reception max bit/sec. Is that same 600 bit/sec?

In the documentation on STM32N657X0, it says that the memory must be connected with match length track on the boards.It says:Match length (including BGA package length)- DQS0 with IO0..7 (Byte0), all in 50 mils,- DQS1 with IO8..15 (Byte1), all in 50 mils,- CLK is100 mils from any signal of Byte0 or Byte1- NCS can be CLK +/-700 milsBut I can't find any documentation on "BGA package length".It seems reasonable that the BGA package should be taken into account, since it is 12.8 mm.and a precision of 1.27mm (50 mils) is specified.I hope someone can help me find that documentation.Keld

Hello,I am working with a custom PCB using STM32H745XI6 (dual core CM7 + CM4).I wanted to boot only the CM4 core.So, in STM32CubeProgrammer --> Option Bytes --> User Configuration:I unchecked BCM7 (CM7 boot disabled)BCM4 remained enabledI clicked ApplyThe operation completed successfullyNo mass erase warningNo security warningNo RDP Level 2 warningRDP was never changed manually.Problem After ApplyingAfter applying the option bytes, I can no longer connect via ST-LINK.STM32CubeProgrammer shows:Error: Unable to read device id from ROM tableError: ST-LINK error (DEV_CONNECT_ERR)Error: Cannot identify the deviceEven in:Under Reset modeHardware reset modeHot Plug mode50 kHz SWD frequencyConnection always fails.What I Have Already TriedConnect under reset (holding NRST manually)BOOT0 high and lowVery low SWD frequency (50 kHz)Hot Plug modeHardware reset modeDifferent USB cableST-LINK V3SET firmware is detected correctlyI also even tried with J-link  Target voltage is ~3.2Vacc

With HPDMA configured for SAI1A, no DMA setup code is generated with CubeMX 6.17.0. See attached IOC file as an example. Possible that I'm missing a required setting, but I can't find anything.Edit: Fully deleting and re-creating project seems to have fixed it :shrug:.