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I am trying to connect the custom board to the mems studio to measure the euler angles and to explore the mems studio? is it possible to connect the custom board?

When we use 3920B to read the M1 card, the data sent to 3920B by MCU is "60 3C 1A 80", but compared with the data sent by 3920B captured by equipment, it is found that there are two more bytes "00 00" behind the data sent by 3920B. The difference is shown in the attached picture. Why does the data sent by 3920B have two more bytes? Will this extra byte affect the total length of bytes sent?Use the rfalNfcDataExchangeStart () function to send data, but only the interruption of sending data is completed, and there is no interruption of receiving data, so it has been circulating in do while. The card did not reply to the data sent by 3920B. Is this phenomenon related to the abnormality of the data sent by 3920B?

Hi,The example for FSBL works as describedhttps://community.st.com/t5/stm32-mcus/how-to-configure-the-linked-list-mode-in-stm32cubemx/ta-p/693779But if the same approach is applied to Appli (Secure) code, the "User Setting Error" raised in DMA IRQ.I use the XIP configuration.Could you please elaborate chages to be made in Secure code? 

Hi,I have a custom developed stm32 project with stm32f411ret6 mcu, i have done my full board and got the pcb printed. I have a 4 pin header on my pcb with vcc,gnd, swdio, swclk for uploading the bootloader for the first time. I have done this several time earlier successfully with stlink/v2 programmer, but now it shows the error(image 3 at bottom): Next I bought a stm32f446 nucleo board and tried with the onboard stlink by removing both the jumpers to program this mcu on the custom pcb, still stlink does not connect.  On my pcb header 3.3v power is also coming successfully I have checked it too.    Also, my boot pin and nrst is connected on custom pcb like this:  under both stlink connection methods i am getting this error, trying to solve these for many days and getting the same connection issue as follows, please help me,  

Installing EGit for Eclipse 6.7.0 in STM32CubeIDE 1.19.0 stops the display of Help Topic contents.I have a clean install of CubeIDE.Opening menu item: Help -> Help Contents opens the Help window OKOpening menu item: Help -> Show Context Help Contents opens Help window OK and Topic content can be selected and viewed.After installing EGit the Help window no longer shows at all and selecting any topic in the Help pane is an empty page. The Git functionality seems to work, staging, commit and compare to a local Git repository, I have not tried with GitHub at this time.There was a warning during EGit installation:I don't know if this is related, but even before installing EGit the log file has this message logged every second:!SESSION 2025-09-21 19:51:02.272 ----------------------------------------------- eclipse.buildId=Version 1.19.0 java.version=21.0.3 java.vendor=Eclipse Adoptium BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_GB Command-line arguments: -os win32 -ws

Hi All, Looking to see if there are any replacements for the VN05NSP. Attached is the datasheet for it.   I found VN5E006ASP-E but am not sure if it could work. Attached is it's datasheet as well.   Thanks for any help. Byron

Hello STM32 Community,I'm having trouble getting UART communication working on my NUCLEO-L4R5ZI-P board and would appreciate any guidance.Board Details:NUCLEO-L4R5ZI-P with STM32L4R5ZIT6PUST-Link firmware updated to the latest versionProgramming/debugging works fineLED control works perfectlyProblem: No UART output appears in any terminal program, despite testing multiple configurations. The virtual COM port is detected by both macOS and Windows, but no TX activity occurs (TX indicator never lights up in terminal programs).What I've Tested:USART2 on PD5/PD6 (as shown in STM32CubeIDE pin configuration)USART3 on PD8/PD9 (based on datasheet D0/D1 assignments)LPUART1 on PG7/PG8 (documented as virtual COM port option)USART2 on PA2/PA3 (standard NUCLEO configuration)Multiple alternate function mappings (AF7, AF8)Different baud rates (9600, 38400, 115200)Tested on both Mac (CoolTerm) and Windows (PuTTY)Hardware Verification:Solder bridges SB130 and SB131 have resistors (closed)GPIO test on PD

Hello,We are working with an STM32F03 and an ECS-320-8-37B-CKY-TR 32 MHz crystal (CL = 8 pF).Our earlier design used an 8 MHz crystal (CL = 8 pF) with 4 pF load capacitors and a 5.1 kΩ series resistor. After switching to the 32 MHz crystal, the HSE no longer starts. This sparked criticism about the correct component values depending on the crystal used.Here are some results from my testing with 32 MHz + 5.1 kΩ:Startup works reliably at ~0 Ω and ~1 kΩMarginal at ~1.5 kΩFails at ≥2 kΩBased on the ECS-320 datasheet (CL = 8 pF, and estimated ~3 pF stray), the correct load capacitors should be ~10 pF each, not 4 pF.Where we are unsure is the interpretation of AN2867:Harmonic suppression (§3.5.3): Formula Rext = 1/(2πfCL²) → ~1.2 kΩ at 32 MHz with 4 pF loads, which matches our *failing* results.Drive level trimming (§3.3): Says to use Rext = 0 Ω unless the drive exceeds the crystal spec. We don’t have low-C probes to measure the drive directly.Empirical: Anything in the hundre

Hi, Dear STM experts:I used MCSDK6.3.2 HSO for BLDC control when porting from stm32Q473 to stm32f405, but when using void IMPEDCORR_setLs_si(IMPEDCORR_Handle pHandle, const float_t Ls_H); A hardware failure occurred during the function, and the possibility of external parameter input has been ruled out. Therefore, I would like to confirm again that the libImpedCorr. a library file must rely on the stm32Q47x chip to run?If necessary, then I can only give up the transplant.Hope to receive a reply。Best Regards.

I am using NUCLEO-WL55JC1 to use LoRa communication. And I add acceleration sensor of LSM6DSOX to this board and I want to get  acceleration data while communicating LoRa. But I could not get correct acceleration value. And I could get correct acceleration value when I comment out  MX_LoRaWAN_Process() in main.c. So It seems that acceleration sensor doesn't work when LoRa is enable. Do you know why and could you give me advices of this issue.    

 Hello Community, I am using 2 function calls __LL_ADC_CALC_VREFANALOG_VOLTAGE();__LL_ADC_CALC_TEMPERATURE_FLOAT();My implementation:uhADCxConvertedData_VrefAnalog_mVolt = __LL_ADC_CALC_VREFANALOG_VOLTAGE(aADCxConvertedData[1], LL_ADC_RESOLUTION_12B);temperature = __LL_ADC_CALC_TEMPERATURE_FLOAT(uhADCxConvertedData_VrefAnalog_mVolt, aADCxConvertedData[2], LL_ADC_RESOLUTION_12B); I am seeing the above macros not respond and there is a hard-fault whenever I call the above functions. Any help would be appreciated.  Thank you

Hello,I am trying to use the GPDMA linked list on an STM32U5 to toggle seven chip-select GPIOs before and after SPI transfers.Setup:MCU: STM32U575ZITXI build a linked list of nodes:Write CSx_Pin to GPIOx->BRR (drive CS low)Dummy delay node (memory→memory)Write CSx_Pin to GPIOx->BSRR (drive CS high)word width, DataSize = 4, SrcInc = FIXED, DstInc = FIXED.Destination addresses are the GPIO BSRR/BRR registers.Problem:Only 3 out of 7 chip-select pins actually toggle when the DMA queue runs. The working pins are:PE3PE1PB6The non-working ones are on GPIOG (PG9, PG11, PG13) and PB8.If I write to these pins directly from the CPU with HAL_GPIO_WritePin, they work correctly. Only DMA writes fail.Questions:Are all GPIO ports on STM32U5 supposed to be reachable by the GPDMA?Is there a known limitation where certain GPIO ports (e.g. GPIOG) cannot be written by DMA?Any clarification on which GPIO ports are DMA-accessible would be appreciated.Thank you.Linked List Setup Code :#define ADC_COUNT

Hi all, I'm using Nucleo H755 I have configured UART with 115200 baud rate and the Rx in Interrupt mode issue: While the STM is configured with 115200 baud rates, when I transmit some data with the same baud rate either the data is corrupted or data is not read/ transmitted, if I reduce the baud rate of the other device by 3 times the baud rate set in ST the Data is read properly. if anyone have any solution regarding this issue, please let me know in this thread I have checked with different STM ide versions, different H755 boards I'm facing this same issue also, I have checked with H723 which is working fine for the same setup. there are different issues with the H755 boards. also, if anyone from STM team finds this message I'm also facing a issue while reconfiguring the ioc file from cube ide some pins get reset every time If any other details required, please feel free to ping me

I have a custom stm32f746 project.  Touchgfx main app is working.  LCD is 800x480I developed a bootloader that is also working.Now just want minimum necessary peripherals to allow simple TEXT output to LCD to show bootloader status.  Trying to keep bootloader to ~64k, so no TouchGFX.But, I have setup FMC, MPU, and LTDC similar to the main TouchGFX app.I am able to print 3 colored bars to the screen:    uint16_t *fb = (uint16_t*)0xC0000000; // RGB565 view const int W = 800, H = 480; for (int y = 0; y < H; ++y) { uint16_t color = (y < H/3) ? 0xF800 : // Red (y < 2*H/3) ? 0x07E0 : // Green 0x001F; // Blue for (int x = 0; x < W; ++x) fb[y*W + x] = color; }Then when I try to print a smaller green box, it still fills across the width of the screen, distorted, and does not go from 40,320?:  for (int y = 40; y < 120; ++y) for (int x = 40; x < 320; ++x) fb[y*800 + x] = 0x07E0;Then when I try to write text I get a thin fluctuating li

Hello everybody,in our application, we want to avoid using the ADC software calibration procedure (not even once).We hence think about writing a fixed value to the Calibration register CALFACT as we saw that most of the times the calib value is very close to 64 (half of the 7-bit range).We can accept a comparably high offset error of the ADC (+-12LSB at 12 bit) and from our measurements so far we think we can work without calibration, however we cannot find any worst-case offset values for the uncalibrated ADC anywhere. So our questions are:Can you confirm that 64 is the somewhat "neutral" value for CALFACT?Where can I find the worst case offset error of the ADC without calibration? Best regards and thank you very much in advanceSamuel

We are interfacing a Chafon MU910-M UHF RFID reader module with an STM32F103C8T6 (Blue Pill) board using UART communication. During loopback testing, we observed that individual UART ports are functional and can transmit single byte, but when attempting to transmit an entire byte/frame, the transmitted data is not received back.We have verified the following:External connections are correct (Tx ↔ Rx, common GND).Code implementation is correct based on STM32 HAL/LL libraries.UART peripheral initialization works when tested with single-byte transmission.However, the issue arises when transmitting multiple bytes (frames), where the data is either not looped back correctly or is lost.Have anyone faced this kind of issues? We are looking for guidance on the next debugging steps, specifically why the UART works for single-bit/byte transmission but fails for multi-byte frames during loopback testing.

Hi,We are using the LSM6DSO in our project to find the euler angles.we are new to this motionfx in stm32. please tell us from where we have to start to find the euler angles.Do we need to add any of the files in the stm32?please tell us from the beginning.

Hi, I am evaluating the STM32H7R7Z8J6, intended to working with a TFT-LCD which is working in parallel RGB interface with DE mode only. The HSYNC and VSYNC signals are not connected. Both AN4861 (Introduction to LCD-TFT display controller (LTDC) on STM32 MCUs) and RM0477 (STM32H7Rx/7Sx Arm®-based 32-bit MCUs) documents only SYNC+DE mode, but the does not mention if the DE-mode-only is supported or not? Could you help to point out the documentation where explains how the LTDC working for DE mode in detail?  Thanks! Leo    

Hi,Im analyzing the circuit of the STGAP3SXS in EVLSTGAP3SXS-.I want to ask what's the purpose of this capacitance in the soft off pin, I thought it was filtering by why does it go to the VL instead of GND_ISOThank you.

Hi everyone,I am working on an STM32H7A3ZI and I'm trying to to exchange audio data with an SGTL5000 audio codec. Because i want to both send and receive data from the codec i configured the I2S peripheral on the STM32 to Full-Duplex Master mode in Cube MX.My problem:Transmitting data using the HAL I2S functions (HAL_I2S_Transmit, or HAL_I2S_Transmit_DMA) works fine, but when i try to receive data (also using the HAL functions) the bit- and word-select-clock won't start. If i first transmit data and then try to receive everything works fine, because the clocks stay on. If i change the I2S config to Half-Duplex Master Receive mode, just receiving also starts the clocks.So in Full-Duplex Master mode i have to transmit data first (or at least write some data into the transmit data register, which starts the clocks), before i can receive data.My question:This seems to be intended behavior, but i couldn't find any documentation on it. Why is this implemented like that?

Sorry, I'm very new to microcontrollers in general and was wondering if I would need more SRAM or if I could successfully just write to the display driver's memory and not worry about a big frame buffer. I hope to use LVGL to control a 320x240 16 bit colour depth display using this method, any help on this topic would be greatly appreciated, thank you.For reference, the reason I'm interested in doing this is because I'm using the STM32 F4VE Black board and I can see it has a TFT interface.

Hello everyone,I tried to create an STM project using existing .ioc files from my friend. They suggested choosing the Migrate option, but unfortunately, it didn’t work for me. For context:I’m using Windows.The same migration process works perfectly on Mac.When I open the main code, I only see the basic template code that appears when starting a new project—all the code from my friend has disappeared.I’ve already tried reinstalling the STM software, but that didn’t help either.Has anyone encountered this issue or can suggest a workaround?Thanks in advance for your help! 

Hi,I am trying to get the USBX CDC working on a NUCLEO-U083RC, but with no luck.I have tested that the USB port (PA11 and PA12) works, because I can do firmware upgrade using the STM32CubeProgrammer.But I cannot find any example on how to get the USB CDC (Virtual Comport) working.I have spend most of a day trying different examples, but nothing seems to work for me.Do anyone have any help to offer regarding a working example ? Best RegardsJakob

We sincerely appreciate your continued support. We have been able to resolve many questions.In the CTRL1_XL register of the ASM330LHH, when setting ODR_XL[3:0] from 0000 (OFF) to 0011 (52Hz) and then to 1001 (3333Hz), does ODR_XL[3:0] need to be set back to 0000 (OFF) once ?

Hello, I installed X-CUBE-AI 10.2.0 from STM32CubeMX in STM32CubeIDE 1.18.1. After enabling X-CUBE-AI in the ioc file and performing code generation, the folders /Middlewares/ST/X-CUBE-AI/Inc and /Middlewares/ST/X-CUBE-AI/Lib are created, but no code is generated in those folders. Therefore, when building the project, I get an error such as:fatal error: ai_platform.h: No such file or directoryIn Project Manager → Code Generator → Generated files panel, I unchecked the option “Delete the previously generated files when not regenerated” and regenerated the code, but the problem was not solved. Please help me.If there is any necessary information that I have not provided, please let me know.This message was translated into English using generative AI. I apologize for any awkward sentences or expressions.Thank you.