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How can I enable HSE on STM32U375K (32pin) in Cube MX?The option to enable HSE does not seem to be available in CubeMX. However, the option to select the HSE startup time is enabled.What am I missing?Does the STM32U375K support HSE? I couldn't find anything in RM0487 that indicates otherwise.   

I cannot get the VCP function of ST-LINK v3 mini working.Windows sees the com port and can open itConnected TX output of UART to pin 14 of ST-LINK 3 mini, but nothing is received on the PC side.Connected some other serial TTL-USB adapter (set to 3.3V), and it works properly.​However, the serial TTL-USB adapter has a ground connection and ST-LINK's VCP has common ground with other functions.The debugger function works properly.Is the TX level of VCP 3.3 or 5 V? Does the VCP function work for anyone?Thanks,-- pa

Hi all,I'm trying to flash a fresh STM32G0x1 MCU (Device ID: 0x466, Revision ID: Rev 1.1) using ST-LINK V2 (FW: V2J48S7) in Hot Plug connect mode with Hardware reset mode, SWD frequency 100 KHz, target voltage reading 3.26V.ST-LINK connects and correctly reads the Device ID and Revision ID, but then fails with:Error: Unable to get core IDError: Unable to get core IDUPLOADING OPTION BYTES DATA...Bank: 0x00Address: 0x40022020Size: 108 BytesError: Uploading Option bytes bank: 0 failedError: Initializing the Option Bytes failedDisconnected from device. Things I've tried: 1. SWD wiring (SWDIO, SWCLK, GND, NRST, 3.3V) checked Target voltage reads 3.26V, stableTried Hot Plug + Hardware reset modeAny guidance on the issue would be appreciated.Thanks!

I created simple project using STMCubeMX2 for MCU STM32C552. I configured the clock by choosing HSIS on System MUX.  When I compile and run generated code it ends in HardFault_Handler. When using PSIS option - the same result. HSISDiv3 clock works well. When I divide HSIS or PSIS clock by 2 on AHB prescaler it also works.   Any idea? Thank you  

I need to view all Cortex-M7 debug and trace/debug subsystem registers during debugging—similar to how peripherals like DAV, RCC, and GPIO are displayed—but they do not appear in the SFRs list; specifically, I need to view the ITM, ETM, WDT, and SWO registers. 

The latest listed is v6.17.x:https://wiki.st.com/stm32mcu/wiki/Category:STM32CubeMX_errata Yes, I know that v6.18.1 errata is available here (via here) - but shouldn’t it be also linked via the wiki ?Or, if the wiki is no longer being maintained, it should point to the new location.

All previous versions listed at https://wiki.st.com/stm32mcu/wiki/Category:STM32CubeMX_errata (viz, v6.17.x back to v6.10.x) had this example under How to improve the wake-up from Stop sequences without relying on the global SystemClock_Config():(note the typo in the comment on checking LSE ready) v6.18.1 still has the exact same erratum - but now there is no example: 

What is LPS22HH conversion time in OneShot mode? I do not use interrupt line and do not want to poll the device until ready. The datasheet doesn’t specify it, it specifies available ODR only.

Mostly, the forum converts a link to a post/thread to a “preview” showing the author’s avatar and post title.But sometimes it doesn’t.Example:Both of those links came from the menu ‘Copy link’ option.Here: In the above case, it was the same both in the editor and after posting.Sometimes, the “preview” doesn’t show in the editor, but does show once posted.

Hi,I am working on CAN FD communication using the STM32C542RCT6. CAN FD is working properly when I use an external clock source. However, when I switch to the internal clock, the controller starts reporting errors such as Error Passive, followed by Bus-Off.My suspicion is that the internal clock may have a slight frequency deviation, which could be affecting CAN FD communication. Since this is a new controller, I would like to understand whether the internal clock can reliably support CAN FD communication or whether an external clock is required.My current CAN FD configuration is: Arbitration bit rate: 500 kbps Data bit rate: 2 Mbps Bit Rate Switching (BRS): Enabled Could you please clarify whether the internal clock can support this configuration and what could cause the controller to enter Error Passive and Bus-Off states when using it?

Hello everyone,I measure a voltage on a STM32L496 using the internal ADC and found the following issue:Setup:The voltage is scaled down via a high-impedance voltage divider (2 x 470kOhm). To avoid distortion by sampling, the voltage divider has a 100nF capacitor. Thus, the capacitive load while sampling is low and the breakdown is 1/20000 → i.e. way lower than the ADC’s resolution. So I do not have to care about source impedance limitations as described in the datasheet (Maximum ADC RAIN).Other data:VREF=VDDA=3.3V (stable) Voltage range of ADC input signal: 0 - 3V (never >3.3V)Effect:I experience a large voltage breakdown when I configure the ADC, via CubeMX generated function MX_ADC3_Init (same happens when I use ADC1). I found, that within MX_ADC3_Init the channel gets configured and the ADC sequencer register ADC_SQR1 is set (I only sample that one channel with the high-impedance voltage divider). As soon as ADC_SQR1 is set, the voltage breaks down, from anything >2.5V to appr

Hi what is the crrent state of agentic programming with cub ide? Like I want Claude code to add an EMMC driver to my existing project. Is this possible? 

Summary This article provides a step-by-step guide to developing FreeRTOS™ applications on STM32 microcontrollers using STM32CubeMX2 and Visual Studio Code. It covers configuring FreeRTOS™ within STM32CubeMX2, generating and building the project in VSCode, and setting up debugging with the STM32CubeIDE extension. The tutorial also explains how to debug FreeRTOS™ tasks and synchronization primitives effectively to facilitate real-time troubleshooting and development. SummaryIntroductionPrerequisites1. Create a new STM32CubeMX2 project2. Configure the User LED GPIO3. Configure HAL timebase to use Timer4. Enable and configure FreeRTOS™ middleware5. Generate and import the project code6. Code editing and task implementation7. Create and modify launch.json8. FreeRTOS™ debugging with VS Code9. Troubleshooting tipConclusionRelated links Introduction FreeRTOS™ is a widely used real-time operating system kernel designed for embedded devices, providing multitasking capabilities, task synchroniza

 Hi,I am working on an offline Flyback converter utilizing a UCC28C50 primary side PWM controller. Originally, the converter was configured for Constant Voltage (CV) mode using a standard TL431 and optocoupler circuit, which operated correctly.To convert this design into a Constant Current / Constant Voltage (CC/CV) supply, I replaced the TL431 with an STMicroelectronics SEA05 advanced controller on the secondary side. My implementation strictly follows the secondary-side configuration from STMicroelectronics' application note "10W offline LED driver based on VIPER27" (DN0002/AN4376).10W offline LED driver based on VIPER27 (DN0002)  Circuit Parameters and Component Values: Target Output Specifications: V_OUT = 15 V, I_OUT = 3 A (Test Target) Current Sense Resistor (R_SENSE / R16, R22): 18 mΩSEA05 Pin Configuration Components: R₁₈  = 3.75 kΩ, R₂₀ = 10 Ω,  R₅ = 10 kΩ, C₈ = 100 nF, C₁₀ = 1 nF, R₁₅ = 120 kΩ, R₇ = 10 kΩ,  R₆ = 51 kΩThe Problem: According to the SEA05's internal 50 mV curren

i’m trying to use stm32h735 chip in my custom board , when it comes to flashing or starting new debug session it gives error like   when i’m trying to access it through stm32programmer it gives it work and connect after many times of trying to turn off power, or remove the st link cable and put it again, when it connected, I erase the full chip to access it, then try to flash it in the ide, it works for 3 times, then repeat the error again, and I tried in cube programmer to change the mode to under reset mode and press reset button and press connected, it failed, I need to know permanent solution not every time it gives me this 

I was trying to edit my post here:https://community.st.com/feedback-forum-118/inconsistent-presentation-of-links-167657?postid=747370#post747370 After inserting images and links and stuff, the “Send” button was grayed out. I had to hit “Cancel”, edit the post again, redo everything, and hit send (which was not grayed out this time). No indication as to why it was grayed out. 

Dear ST Team,  We have recently received parts of STM32G474CET6 & STM32F103RBT6 which there are no COO information on Label. Is this normal observation?  Could you please help advise if this is due to label format restriction of tariff issue or other reasons? All the COD and COO info the parts are visible on chip itself. Appreciate your explanation and advise.   

Hello STMicroelectronics Community,We are evaluating the following STM32 microcontrollers for long-term use in our drone flight controller development: STM32G431 STM32G431KBU6 STM32G474VET6 STM32H743VIT6 STM32H723VGT6 We would like to understand the long-term market availability and product lifecycle commitment for these MCUs.Could you please clarify the following points? Product Longevity: For how many years will these MCUs remain available for purchase and production? Lifecycle Status: Are these models active, recommended for new designs, or approaching end-of-life (EOL)? Long-Term Supply: Does STMicroelectronics provide a guaranteed supply period or product longevity commitment for these specific MCUs? EOL Notification: If any model is planned for discontinuation, how much advance notice will be provided? Replacement & Migration: If a model becomes obsolete, will a pin-compatible or functionally compatible replacement be available? Our concern is to avoid selecti

I need the CPU to copy camera frames for tasks like screenshot-based recognition and uploading. However, in the data path (sensor → CSI → DCMIPP → DMA → DDR), the DMA mapping layer marks the memory as uncached, resulting in very slow speeds; the CPU read bandwidth is only ~143 MB/s—just one-eleventh of the speed of standard cached memory (1619 MB/s).Copying a 1280x960 image from DMA takes around 25ms, and the process becomes even slower at higher resolutions, leading to a poor user experience.Is there a way to make the DMA copy speed match that of standard cached memory (1619 MB/s)? 

Hi, Good DayI am Mike, I work for Lenovo Japan, I am currently doing a POC for ML enabled embedded application using STM32N6570-DK. I just got stuck after debugging incremental update to my firmware (add ThreadX). Background / PretextWith the help of https://community.st.com/stm32cubeide-mcus-28/stm32n6570-dk-debug-keeps-failing-error-32-load-failed-not-sure-if-i-should-debug-fsbl-or-appli-168613?tid=168613&fid=28, and STMicro Template_Isolation_XIP project, I was able to setup a project that runs debug from FBLS to AppS to AppNS. I plan to build my target firmware bit by bit, and so I was able to add UART1 for debug log and it was working at that point.My next step was to add ThreadX, so I configured .ioc to add ThreadX and TIM6 as source clock to SYS_NS, then I forgot to turn on the RTOS awareness to ThreadX->CoreM55 and I begun to fail connecting when hitting debug.I kept a copy of basic Template_Isolation_XIP that was perfectly working, and event switching to that project, t

Hi everyone,I'm using UART Receive-to-IDLE with circular linked-list GPDMA on an STM32H7RS and ran into a problem where reception stopped with HAL_DMA_ERROR_DTE.The DMA node and RX buffer are both in DMA-accessible, non-cacheable RAM and aligned to 32 bytes.The DMA handle and queue structure are in normal BSS. Everything is global/static and zero-initialized.I checked the queue/node connection and the source address in LinkRegisters[3], which correctly pointed to UART RDR. The node address reconstructed from CLBAR and CLLR was also correct when checked.However, these were the actual DMA register values in the working and failing cases: Working FailingCBR1 0x00000080 0x0000049BCSAR 0x40007824 0x00000005CDAR 0x24001960 0x200065A0After the DMA error, UART error handling stopped reception and disabled the IDLE interrupt, so I stopped getting HAL_UARTEx_RxEventCallback() calls.What fixed it was adding __DSB() inside HAL_DMAEx_List_Start_IT(), after the CLB

Hello,I am using:- NUCLEO-F401RE- X-NUCLEO-53L4A1- VL53L4CD_GUI (Rev 1.0.17549)The VL53L4CD sensor is working correctly with the X-CUBE-TOF1 example(53L4A1_SimpleRanging). I can read distance measurements through theST-Link Virtual COM Port.However, VL53L4CD_GUI cannot detect the sensor.When the GUI starts, it shows:"Failed To Connect to Nucleo Board: Com Port Not Detected"After pressing "Flash FW", it changes to:"COM9 Connected: Sensor Not Detected.Please ensure sensor connected then Press Black Reset Button on the Nucleo."Additional information:- ST-LINK is detected correctly.- STLink Virtual COM Port (COM9) is available.- STM32CubeProgrammer can connect successfully.- The VL53L4CD sensor is confirmed to be working with the  53L4A1_SimpleRanging example.- The GUI remains in OFFLINE MODE and API Version shows TBC.Has anyone successfully used VL53L4CD_GUI withNUCLEO-F401RE + X-NUCLEO-53L4A1?Is there a specific firmware required for the GUI?Thank you.

Hi ST Community & Support Team,I am working with the NUCLEO-H755ZI-Q (Board MB1363) and I noticed a potential typo in the User Manual UM2408 (Rev 6). 31/57In Section 7.12 - Ethernet, Note 3 states:"On MB1363 Rev.C: Ethernet PHY LAN8742A must be set in the Power-down mode [...] SB13 can also be removed to get the same effect."However, when checking the schematic (mb1363-h755ziq-d01_schematic.pdf), SB13 is actually located in the ST-LINK Virtual COM Port level translator circuit (U1: SN74LVC2T45DCUT) between STLK_VCP_RX and T_VCP_TX, and is already marked as DNF (Do Not Fit).It seems SB13 in Note 3 is a documentation typo pointing to the wrong solder bridge.Based on the schematic, there is no dedicated hardware jumper or solder bridge (SB) to physically disconnect the power or clock lines of the LAN8742A PHY.Furthermore, upon a detailed review of the schematic, there is no dedicated hardware jumper or solder bridge (SB) to physically disconnect the power or clock lines of the LAN8742

STM32CubeMX 6.18.1 + STM32Cube FW_G4 1.28.3Target: STSPIN32G4 / TIM1Asymmetrical Dead Time enabledCubeMX GUI:Dead Time = 50 Falling Dead Time = 50 Asymmetrical Dead Time = EnableGenerated LL code:C  TIM_BDTRInitStruct.DeadTime = 50;No write to TIM1->DTR2 is generated.Runtime observation:DTAE = 1 DTGF = 0Therefore CubeMX appears to generate DTAE but not DTGF.