STM32 MCUs

Hello We are working on a new project with STM32H723ZGT6. I want to control S70KL1283DPBHI020 DRAM with HYPERBUS communication using OSPI1. If you access 0X900000 memory to write and read data during the current operation, the data will not be read accurately. It seems necessary to check if there is a problem in the circuit diagram. I'm using PC2_C pin and PC3_C pin for IO5,6, is it not a problem? Is it not a problem to use the RESET PIN as a GPIO OUT PIN to give a HIGH signal I gave the data a value of 0xff up to 100 bytes, but there is another value in the 4th address. I would like to ask you to check the problem. Thank you.

For context,  I am new to both USB programming and the STM products (and tools), so I apologize in advance for my ignorance. I am working with an old, existing system, which utilized a USB connection to a processor/EEPROM to store information (a dongle).  As some of the parts have gone end-of-life, we are looking to move to new hardware.   The hope is to mimic the software running on the old hardware so that the new part will work with existing systems in the field, as well as new products. Our existing system runs on Linux with a custom driver communicating with the dongle, and from what I can tell has been coded up as a "vendor device" instead of a "class device". Anyhow, the engineering department selected the STM32C071RBT6 as an appropriate part and have provided a prototype which I am using for development along with the following:STM32CubeIDE   v2.0.0STM32CubeMX    v6.16.1STM32C0 series  v1.4.0 To get started w

I have a STM32H732 processor connected to a ethernet switch with port based VLAN support.I use the processor to connect to two different interfaces which are separated in the switch.I wanted to be able to access the same two TCP ports in the processor from both interfaces.So I configured ETH_L3_FILTER_0 and ETH_L3_FILTER_1 with the two different IP-addresses used on the two interfacesAnd the ETH_L4_FILTER_0 and ETH_L4_FILTER_1 with the two different ports.But that did not work as I hoped.It looks like the L3_FILTER_0 and L4_FILTER_0 are used as one filter. and FILTER_1 as another.And maybe that is as intented but it is not super clear in the documentation.I may have to add that I have found and read...Is this correct or is there perhaps a way to use the L3 and L4 as separate filters so that I can get four different filters allowing two IPs and two Ports in any combination of ports and IP?Best regards 

I see only one other answer to this question, here: Solved: TrustZone Enable afterwards - STMicroelectronics CommunityHowever, others are not answered. Can you confirm that there is a solid reason why the TrustZone cannot be enabled after the project has been created? Does it scramble to ioc file? Was this an issue with previous versions of CubeMX and perhaps no longer an issue? Core: M33

This is to NUCLEO-H723ZG/NUH723ZG$AT2 eval board. When set VDD=3.3V by JP5, the ethernet (lwip + no os) DHCP is working fine and stable. When switch to VDD=1.8V by JP5, the STM32 is working fine but the ethernet DHCP is working randomly, most of time failed. Checking the board schematic of ethernet section, it looks fine for LAN8724 VDDIO=VDD=1.8V and 3.3V to transformer section.  Using this eval board for 1.8V environment project, enthusiastic hope to make it works stable.  Any helps are welcome. Thanks. JYI      

Hello, I have a custom board with a STM32WB55CEU6 and I am trying to programm it through a Nucleo STLink with SWD. The onboard Nucleo CPU is detected and works fine if I add the jumpers, and I can program a different STM32 board with the jumpers removed as well, so the STLink is functional.It fails when trying to connect to the STM32 saying it's unable to detect the Device ID, so no SWD communication happens at all. I have connected SWCLK, SWIO, NRST and GND and checked the polarity multiple times. I also checked with a multimeter, and there is connectivity between the pins. I used a 10cm Dupont Jumper and the traces on the board are around 3cm long. Boot0 is tied to GND. Supply voltage is a clean 3V3 and I am using the internal SMPS, where VDDSMPS is at 0.97V if I plug it in. So I think the STM32 is powered and operational, just not able to connect. I don't really know what else could be going wrong on the board, so I came here to ask for help. 

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?

Dear all, I have a custom PCB with the STM32WBA5MMG module. I missed the keepout requirement in the reference design and pads 2 - 5 and pads 56 / 59. These pads are connected to GND in my design. I did some signal tests, and I have a feeling the antenna is not performing well (I configured +10dbm). Can somebody confirm these pads connected to ground influence the antenna performance? Below is a snippet of the PCB design:   Thanks, Robin

Hello ST team,I am using the EVSPIN32G4 evaluation board with sensorless 6-step control.Hardware Setup:Board: EVSPIN32G4Motor: BLDC motor (24 pole pairs)Control mode: Sensorless 6-step (BEMF zero-cross detection)Current sensing: 1 mΩ shunt + external amplifier (Gain = 7.33)PWM frequency: 60 kHzDC bus voltage: 48 VProblem Description:When observing the three phase voltages (U, V, W) on the oscilloscope, I noticed that three phase voltage occasionally becomes flat or loses switching activity during commutation.This issue becomes much more obvious at high speed operation.At low speed:Waveforms are mostly trapezoidal and continuous.as show.At high speed:The floating phase voltage becomes unstable.The BEMF signal appears distorted.In some sectors, one phase seems to lose signal briefly.Ringing and high-frequency oscillation increase significantly.as show. The higher the electrical frequency, the more severe the signal loss.It seems that the floating phase is being clamped or not properly re

Dear. AllI'm asking how to use STemWin on stm32h743 mcu.How to add STemWin on STM32CubeIDE? (Current Use Version. 1.13.0)?How can I run a project with the development board I bought? (STM32H743I-EVAL)?In particular, I want to run the STemWin_SampleDemo project.I`m use IAR EWARM ver 9.xx but in stm32cubeh7-v1-12-1 andSTM32Cube_FW_H7_V1.11.0\Repository\STM32Cube_FW_H7_V1.11.0\Projects\STM32H743I-EVAL\Demonstrations\STemWini find STemWin.ewp project which use OGLastSavedByProductVersion 8.20.2.14834.It mean`s STemWin.ewp should compile on EWARM 8.20 or late.Is it possible to use example on later version EWARM ?Best regards.

Hi,Is underline of text supported by TGFX or will that be part of the ttf-files in Typographies?The goal is a text like this: "Press SETTINGS now." 

Hello,In our application there is a STM32L073CZT3 component, we use timers and DMA to generate PWM that simulates a sine wave to start a motor.We encounter a problem with the microcontroller at high temperatures (about 80 degrees Celsius and above).The microcontroller stuck in all sorts of different states, sometimes the DMA and timers continue to work but the communication and control(PID) stop running in the background, sometimes everything stops (the external clock continues to work at 24MHz), and sometimes the DMA interrupts stop working for a few milliseconds (1-7msec)  and then start working again (which produces a reset in our case as a result of a return current from the motor, and a protection component that disconnects power to the circuit). Can you help with ideas why this is happening to us? Thanks,Oren Shoef.

Hello.   I'm having a problem with an STM32H503. I need to use the RTC, which is running on the internal 32kHz LSI clock. The clock configuration was created with CubeMX.   When I check the RTC, I see that it has only advanced by 21 seconds in 60 seconds. That's a deviation of 285%. The processor is running on the HSI clock, which is divided by 2, so 32MHz. Does anyone know why the RTC is running 3 times too slow?   Init of the RCC: RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV2; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.LSIState = RCC_LSI_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // RCC_PLL_OFF; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } /** Initializes the CPU, AHB and APB buses clocks */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLO

Hello,Where can i find the sources for MX66UW1G45G_STM32N6570-DK-OBL.bin and MX66UW1G45G_STM32N6570-DK.bin? The stm32-external-loader repository does not seem to have these?Thanks!

 It's across 'U5, 'H5, 'H7 RMs, maybe more.How did I spot that? I was text-searching for 'NMI' ... :)JW

I am using CubeCLT v1.18.0 on an Ubuntu host. I recently got a new J-Trace and ran into warnings about the firmware version not being recognized. I traced the root of the problem being the version of `libjlinkarm.so.7` that ships with this version of CubeCLT.  I need to upgrade to a newer version of the library to resolve the warning. I am already using J-Link v8.48 elsewhere, so I plan to follow this guidance from SEGGER to upgrade the so file. Should it be safe to do this upgrade from v7 to v8? I also noticed that SEGGER release v9.20 of J-Link and was considering going to that. I assume that would include a v9 so. Would that be safe to go to as well? I have a logistical question regarding how ST manages the shipped version of libjlinkarm. It looks like CubeProgrammer specifically expects `libjlinkarm.so.7`. Is there a particular reason for expecting that fixed version name? For me, it would be preferable to expected `libjlinkarm.so` so that I could symlink i

Heyho,I have an application with an STM32H7x3, which might be talking to some other STM32 (type TBD, probably something <= G4) on another stacked PCB.This is only a control interface, so no data streaming with a minimum data rate.I am looking for the "best" interface, with that I mean "highest speed at lowest complexity".  Hardware limits:trace length max 30 cm, probably over 1 or 2 connectors max. 4 pins (+1 chip select for each participant also okay)max. 4 STM32x + STM32H7x3 on the "lines"So, I2C or SPI - or anything else ?For reliability I like the I2C's acknowledge, SPI is surely faster and has no address "overhead".Thanks in advance for your input!  

Hello ,I want to Access QSPI drivers in STM32H7A3VIH6. However in Cubemx there is only option of OCTOSPI1 and OCTASPI. My question is there way to use QSPI api directly like HAL_QSPI_Init instead of OSPi init?Or we have use OSPI only?Secondly i am using 2 external flash to be used in each QUAD SPI.

stm32使用串口空闲中断，仿真过程中打断或者程序停止运行时串口要是外部有数据geistm32发送，运行后不在进串口空闲中断这种情况谁遇到过， Translation with google: When using a serial port idle interrupt in STM32, if the simulation is interrupted or the program stops running, and there is external data being sent via the serial port, the STM32 stops sending data after the program resumes running. Has anyone encountered this situation?

Hi,Recently I have purchased ELSERVO1 board to drive BLDC Motors with 20A rated current. I dont have a ST Flasher, instead, I am using Nucleo g071rb board and removed the jumper pins in the board to flash the external ST controllers.I have connected exact, pins in both the boards like, SWDIO, SWCLK, VDD and GND but, I am not able to flash the firmware saying ""Target no device found, Error in initializing ST-Link device" Reason: No device found on target"What will be the issue in flashing the firmware?? I was able to flash to other boards.I am suspecting that the ELSERVO1 board has dead..please provide the solution.  

Same issue reported in 2020: https://community.st.com/t5/stm32-mcus-products/stm32g473-fdcan-pinout-contradicting/td-p/224770.As of DS12712 Rev 5, Table 13 Alternate Functions has PB10 and PB11 mis-labeled as FDCAN3_RX and FDCAN3_TX respectively.Under AF11, PB10 and PB11 are not available as FDCAN3_RX and FDCAN3_TX.

Our own non-secure application is based on "SMAK_Appli" in the STM32TRUSTEE-SM example and in principle, it works, but debugging is giving me issues. This is with STM32CubeIDE latest version and all tools software and firmware updated to their latest versions, too.Issue 1: Using STLINK-V3 to start debugging, whenever there has been a code change, the first attempt results in a verification error (see log below) and the second attempt then works. This is 100% consistent and terribly annoying since starting the non-secure debugging session is very slow to begin with.Issue 2: Using J-Link to start debugging, it claims flash was programmed (very fast) and debugging seems to work at first, but I found that flash programming was not effective. The flash content is always what it was programmed with using STLINK. So if I want to use J-Link, I have to program with STLINK (twice), then switch to J-Link but I cannot successfully program changed flash content with J-Link.Are these issues know and

Hi ST team,I’m using X-CUBE-SBSFU v2.8.0 on STM32H753 (2_Images configuration), and I need guidance to move firmware transfer from UART YMODEM to USB protocol.Current setupPlatform: NUCLEO-H753ZI (also testing H753 EVAL migration)Project: 2_Images (SECoreBin + SBSFU + UserApp)Toolchain: STM32CubeIDECurrent transfer path works: YMODEM over UARTGoal: Transfer .sfb image over USB (preferably CDC), store in download slot, request install, reset, then let SBSFU verify/swap/launch ObservationLocal loader is UART-based (SFU_LL_UART_* in sfu_com_loader.c)USB PCD appears not enabled by default in stm32h7xx_hal_conf.hIn UserApp, install-at-next-reset flow is already working in fw_update_app.cSo i need some clarification What is ST-recommended architecture for USB transfer with SBSFU?USB in UserApp (receive file, write to DWL slot, call install-at-next-reset), orUSB directly in SBSFU local loader, orStandalone loader approach?Do you have any official reference/example for

STM32CubeIDE an error was ocurred. See log file. Steps i have did: Delete Java x86 Reboot PC Install Java x64 STM32CubeIDE installed. Nothing helps... Any idea?     !SESSION 2026-02-27 14:50:10.495 ----------------------------------------------- eclipse.buildId=Version 2.1.0 java.version=21.0.9 java.vendor=Eclipse Adoptium BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=ru_RU Command-line arguments: -os win32 -ws win32 -arch x86_64 !ENTRY org.eclipse.osgi 4 0 2026-02-27 14:50:14.890 !MESSAGE Application error !STACK 1 java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: C:\Program Files\STM32CubeIDE_2.1.0\STM32CubeIDE\configuration\org.eclipse.osgi\366\0\.cp\swt-win32-4966r5.dll: Не найдена указанная процедура no swt-win32 in java.library.path: C:\Program Files\STM32CubeIDE_2.1.0\STM32CubeIDE;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/STM32CubeIDE_2.1.0/STM32CubeIDE//plugins/com.st.stm32cube.ide.jre.win64_3.4.200.2026

I want to generate an SBOM (Software Bill of Materials) for my STM32 firmware project, specifically targeting the STM32H733 microcontroller. I have tried searching for guides or examples of how others have done this for similar projects, but I haven’t been able to find any detailed resources. Any guidance or references on generating an SBOM for my firmware project would be greatly appreciated.