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What I want to achieve:During startup all code is verified, starting with SMiRoT (as root-of-trust) then SMuRoT, then SecureManager then non-secure application.If the application has been modified (vberification fails) the startup shall end in system bootloader.Unfortunately, this does not work as our tampered/modified non-secure application is still started/executed instead of jumping into bootloader.Secure manager is installed with the provisioning script. We have modified the BOOT_UBE setting via TrustedPackageCreator from 0xB4 (OEM-iRoT - user flash) to 0xC3 (ST-iRoT - system flash) and re-generated Option_Bytes.csvWhat I see is that when connecting the STM32CubeProgrammer, the value for BOOT_UBE still shows 0xB4.And in the log during SFI flashing (provisioning.py -v --sfi-flash) it shows this:DEBUG - Warning: Option Byte: BOOT_UBE, value: 0xB4, was not modified.DEBUG - Warning: Option Bytes are unchanged, Data won't be downloadedDEBUG - Time elapsed during option Bytes config

I am trying to build the readily given Nx_webserver project , i had selected the given example and just change the tool chain to STMcube IDE inorder to build the project with the cube ide after redirection to the cube IDE i just click on the build , it ends up with the following error: Spoiler (Highlight to read)12:03:20 **** Build of configuration Debug for project Nx_WebServer_FSBL ****make -j8 all arm-none-eabi-gcc "C:/Users/admin/STM32Cube/Example/Nx_WebServer/Middlewares/ST/threadx/common/src/tx_block_pool_performance_info_get.c" -mcpu=cortex-m55 -std=gnu11 -g3 -DRTL8211_INIT_TO=10000 -DETH_PHY_1000MBITS_SUPPORTED -DDEBUG -DUSE_HAL_DRIVER -DSTM32N657xx -DFX_INCLUDE_USER_DEFINE_FILE -DNX_INCLUDE_USER_DEFINE_FILE -DTX_INCLUDE_USER_DEFINE_FILE -DTX_SINGLE_MODE_SECURE=1 -c -I../../../Middlewares/ST/netxduo/ports/cortex_m55/gnu/inc -I../../../Middlewares/ST/threadx/ports/cortex_m55/gnu/inc -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -fcyclomatic-complexity -mcmse -

Hello ST Community,I am working on an industrial combo vending machine controller system and would like to request a design review / best-practice feedback for an architecture based on STM32H563ZIT6.System OverviewMCU: STM32H563ZIT6 @ 200 MHzOperation: Industrial application, 24×7 continuous operationArchitecture:Main / Process ControllerStepper Motor ControllerDC Load ControllerEach controller uses a dedicated STM32 MCU to separate process logic, real-time motor control, and power load handling.1. Main Controller – CPU Load & Memory UtilizationMultiple interrupt sources (flow sensors, actuator pulses, PWM capture)UART RS485 communication @ 115200ADC usage with DMAContinuous vs process-based CPU load classificationWorst-case CPU utilization < 20% (**Please check our attached Doc)RAM usage ~4.4%, Flash usage ~4% (Build Analyzer)Question:From STM best-practice perspective, is this CPU and memory margin considered sufficient for long-term industrial operation?2. Stepper Controller

Hello, I am using STPM34 smart metering chip to read 230 VAC voltages and currents. I am using 3 chips on 1 board:First 2 STPM34 measure 3 phases of 230 VAC voltages and currents, 3 STPM34 measures 16 multiplexed current channels and no voltage.I am communicating with all chips via SPI interface, I use CRC to verify communication. I also use auto Latch function on all chips and 2x current gain on all channels, these are all the settings I change every time it powers on. The problem I face is after long working time, from a few days to a week, I start to get wrong values from some chips. Sometimes I get wrong voltages, sometimes wrong currents. Currently I am getting 428 V on voltage channel that is measuring 250 VAC on a device that runs for 12 days. Previously I was getting 0 A on a current channels of a device that was running for 5 days. It depends on device that I use. I have 5 PCBs with assembled devices, currently testing 2 on long run and both return wrong values after some

# External Loader Issue: STM32U5G9ZJT6Q + MX25L12833FZNI-10G (Quad-SPI)## 1. Problem SummaryHello, I'm a novice developer who recently started working with embedded systems. I've been struggling significantly with implementing an external loader for several weeks now...I'm developing an external loader for **MX25L12833F** (16MB Quad-SPI NOR Flash) connected to **STM32U5G9ZJT6Q** via OCTOSPI1, but it continuously fails in STM32CubeProgrammer. The loader compiles successfully and generates a `.stldr` file, but programming operations fail.The problem is sector erase. Writing, reading, verification, and mass erase all function normally, but only sector erase does not work properly. What could be the reason? __attribute__((used)) int SectorErase(uint32_t EraseStartAddress, uint32_t EraseEndAddress) { OSPI_RegularCmdTypeDef sCommand; uint32_t SectorAddr; uint8_t status_before = 0; uint8_t status_after = 0; g_erase_input_start = EraseStartAddress; g_erase_input_end = EraseEndAddre

Hello, ADC_CR_ADCALLIN is described as "rw" . The procedure given in RM0456: 33.4.8 Extended calibration mode does not explicit recommend to reset ADC_CR_ADCALLIN after the procedure. I think it is helpfull to add in RM0456.  

Can multiple versions of a software be installed on one computer or system? The latest version I recently downloaded doesn't include MX. Should I install version 1.19.0, or use the uninstallation method for version 2.0.0?

Hello all,I have been reading other posts with the same problem but I do not get the solution in my case.I'm using the development kit STM32F446RE (Nucleo 64).I have created a new project with STM32CubeMX 6.16.1, and I open the project with STM32CubeIDE 2.0.0. When compiling (in Debug or Release) I get this error: 11:39:26 **** Incremental Build of configuration Debug for project TEST_ST_NUCLEO ****make -j22 all make: stat: ../Core/Startup/startup_stm32f446retx.s: Permission deniedmake: *** No rule to make target '../Core/Startup/startup_stm32f446retx.s', needed by 'Core/Startup/startup_stm32f446retx.o'. Stop."make -j22 all" terminated with exit code 2. Build might be incomplete.11:39:27 Build Failed. 1 errors, 0 warnings. (took 584ms) Any help will be welcome. Thanks in advence.  

I work on a pedometer project, which uses built-in accelerometer and an LCD screen (ILI9341). The screen code works fine, but I struggle to get the pedometer part to work. I suspect there might something wrong with how I initialized the accelerometer, since it outputs weird values.I use an stm32f407g-disc1 board with built-in accelerometer, which I communicate with via SPI. I find the values it returns very weird, since I don't move the device at the moment. Shouldn't they be close to zero since there is no acceleration? Moreover, they don't change when I shake the device slightly, although it may be because the acceleration is not big enough to be detected. Another problem is that mag value changes all the time, although x,y,z don't change.Valuesmain functionint main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. *

Split from this thread as the questions become more generic on embedded systems not related to the STM32. Hello Team, We are currently evaluating STM32H563ZI for a production system and would like your guidance on recommended CPU and RAM margin before moving to large-scale deployment. Based on our current firmware build analysis (STM32CubeIDE Build Analyzer): RAM: Total: 640 KB Used: ~182 KB (≈28.5%) Free: ~458 KB Flash: Total: 1 MB Used: ~282 KB (≈27.6%) Free: ~742 KB From a static memory usage perspective, sufficient margin is available. However, our application is load-dependent, and real CPU utilization varies based on field conditions and communication traffic. We would like clarification and guidance on the following points: What CPU utilization margin (%) is recommended for STM32H5 series devices in production systems (for example, acceptable average and peak CPU load)? What RAM headroom (free heap and stack margin) is considered safe for long-term and

Hi,I am trying to use USART6 on STM32MP257F-DK development board. I have enabled it in the device tree, recompiled it and I now can see the /dev/ttySTM1 node. The problem is, that sometimes, after reboot, any access to the USART (even changing its baudrate using stty -F /dev/ttySTM1 command) causes SERC exception (with ID 36 which corresponds to USART6) to happen.This does not happen all the time, but most of the time. Once and it doesn't happen after boot it won't happen again until next reboot and the UART works just fine.here my device tree change:&usart6 {pinctrl-names = "default", "idle", "sleep";pinctrl-0 = <&usart6_pins_a>;pinctrl-1 = <&usart6_idle_pins_a>;pinctrl-2 = <&usart6_sleep_pins_a>;/delete-property/dmas;/delete-property/dma-names;status = "okay";}; it seemed first that disabling the DMA helps, but I am not so sure nowusart6_pins_a: usart6-0 {pins1 {pinmux = <STM32_PINMUX('F', 13, AF3)>; /* USART6_TX */bias-disable;drive-push-

Hi ST Engineers: Is the audio amplifier demo board STEVAL-CCA044V1 still active for ordering, or is the board STEVAL-CCA044V1 obsolete?   Best Regards Simon Peng

hello,now I am using stm32f030cct6 to design a simple program. i used all the 6 uarts of this chip. it works fine, but the interrupt code generated by STM32CubeMX has a simple bug. the code as below.for the uart6, there is a useless （&huart6);  i think it is no effect to the function, but when building, there is a warning.stm32f0xx_it.c:172:33: warning: statement with no effect [-Wunused-value][build]   172 |   HAL_UART_IRQHandler(&huart6);(&huart6);[build]       |                                ~^~~~~~~~ I dont like the warning. so i think you can simplly fix this bug. thanks.

I want to make a pedometer app that would count steps and display the number of steps on an LCD screen. I have tested my functions for the screen (ILI9341 SPI), and they work successfully. I tested the LCD code by initializing a timer that incremented the value to display every second and sets the flag update_lcd_flag.But when I add the pedometer code, which uses SPI1, the value on the screen never gets updated past zero. Is it because I launch a DMA interrupt from the timer interrupt, or do I need to look for problems somehwere else, e.g. in my pedometer logic or SPI1 configuration? The pedometer relies on the accelometer, which is built into STM32F4O7G-DISC1, which is my board, by defaultP.S. The LCD functions don't use interrupts or DMA, they only use polling.The timer callbackvoid HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef* htim) { if (htim->Instance == TIM2) { if (draw_ready == 1) { HAL_GPIO_WritePin(ACC_GPIO_PORT, ACC_GPIO_PIN, GPIO_PIN_RESET); HAL_SPI_T

I'm currently using Touchgfx after updating from version 4.25 to 4.26.When I build and run the code generated by Touchgfx 4.26, Display color doesn't match the design in Touchgfx 4.26.But When I do the same thing through Touchgfx 4.25, Display color matched very well. 

I am migrating from STM32L431 to STM32L471. After migration, the function relating to internal flash writing does not work any more. The problem is when I programmed internal flash with HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, address, data), following errors occurred, including FLASH_SR_PROGERR, FLASH_FLAG_PGAERR, and FLASH_FLAG_PGSERR.I searched on the web, and found problem may relate to timer initialization and watchdog usage. I added HAL_TIM_Base_DeInit before HAL_TIM_Base_Init, and watchdog is disabled completely in the system including wathdog initialization and update.. But the problem is still there.By the way, the development environment is MDK5.36, ARM::CMSIS IS 5.8.0 (5.6.0 is also tested), ARM::CMSIS-Driver is 2.6.1, Keil::STM32L4xx_DFP is 2.6.1.So, what the problem it might be, and how can I solve this problem?Thanks

I have a STM32MP257 custom board and I'm listening on UART6.When I boot, I get nothing. No messages or other text. I have not yet implemented any Linux onto my SD-card.The issue is that I have my USART6 boot pins on PF13 and PF14, instead of PF4 and PF5. Are there any way to change this in ROM?Or do I need to load TF-A from my SD-card so TF-A can change USART6 pins?

Hello, I am planning out a project that uses new BLE 5.4 feature periodic advertising with response and I wanted to use STM32WBA as a broadcaster and STM32WB0s as observers. There seems to be a great software support for this on WB0 but when it comes to WBA I can't find much documentation or any examples even on periodic advertising. Do you plan to add this in the future? Or is STM3WBA more focused on audio and will not get these features? Thank you

 Hello,I am using an ST7701S LCD over 3-wire SPI (CS, SCK, SDA) with my STM32.When I send the initialization commands from my ESP, I noticed the following:The first command of the sequence is not sent.The program seems to stop at the second stage, around the 100th command.SPI is configured in master mode, polling (no DMA, no interrupts).Example of the write function:void ST7701_Write(uint8_t dc, uint8_t data) { uint16_t value = ((dc & 0x01) << 8) | data; HAL_GPIO_WritePin(LCD_CS_GPIO_Port, LCD_CS_Pin, GPIO_PIN_RESET); HAL_SPI_Transmit(&hspi2, (uint8_t *)&value, 1, HAL_MAX_DELAY); HAL_GPIO_WritePin(LCD_CS_GPIO_Port, LCD_CS_Pin, GPIO_PIN_SET); }Questions:Could the first command being skipped be due to HAL/SPI initialization or state?What is the recommended method to ensure all commands are reliably sent over 3-wire SPI to ST7701S?Thank you for your help.

Hi STM Devs!I would like to introduce a thread scheduling library - SuperTinyKernel (STK).Its GitHub repo: https://github.com/dmitrykos/stkYou can check capabilities in detail on GitHub but briefly STK can:Soft and hard real-time support: STK supports cooperative scheduling for “soft real-time” tasks, you can also enable hard real-time mode (KERNEL_HRT) for periodic tasks with guaranteed deadlines.Static and dynamic tasks: Define all tasks at startup (KERNEL_STATIC) or allow tasks to be created and destroyed at runtime (KERNEL_DYNAMIC).Low-power friendliness: STK puts MCU into a low-power mode when there are no runnable tasks (task calls Sleep).Tiny footprint: Minimal C++ abstractions (no STL, no heavy namespaces) keep the kernel small and simple.Portability: Supports ARM Cortex-M and RISC-V RV32 MCUs.Multi-core support: Fully implemented for Cortex-M and RISC-V.x86 development mode: Compile & debug your code on a PC before flashing to the MCU, which helps with early

the best I achieve so far using DWT as well as PMU is 'few cycles' accuracy. My question is, how I measure execution time such that I get 1 cycle difference when I insert a nop in the measured code ? (assuming interrupts and caches are disabled).Both functions below return 1!.global test_pmu0 .type test_pmu0, %function .align 2 test_pmu0: isb sy dsb sy ldr r3, .test_pmu0.pmu_base ldr r0, [r3, #0x7C] //read PMU->CCNTR ldr r1, [r3, #0x7C] //read PMU->CCNTR sub r0,r1,r0 bx lr .align 2 .test_pmu0.pmu_base: .word 0xE0003000 //PMU base address .global test_pmu1 .type test_pmu1, %function .align 2 test_pmu1: isb sy dsb sy ldr r3, .test_pmu1.pmu_base ldr r0, [r3, #0x7C] //read PMU->CCNTR nop ldr r1, [r3, #0x7C] //read PMU->CCNTR sub r0,r1,r0 bx lr .align 2 .test_pmu1.pmu_base: .word 0xE0003000 //PMU base address 

Hi everyone,I am encountering an issue with the "Access to MCU Selector" feature.The Problem: After installing X-CUBE-AI packages version 10.2 (or any version later than 10.0), the MCU Selector fails to open. It gets stuck in an infinite loading loop. Additionally, the "Output" view remains empty, showing no error logs.Troubleshooting: I found that if I uninstall the versions newer than 10.0 and revert to X-CUBE-AI version 9.0.0, the MCU Selector works perfectly fine.Has anyone faced this issue? Is there a known workaround or solution to use the 10.2 version without breaking the MCU Selector?Thanks in advance. 

I have a custom PCB with an STM32H563VGT6 microcontroller and an external Winbond W25Q16JVUXIQ NOR flash memory connected to the octoSPI's (XSPI) upper four pins. The problem is I can only write data to the flash memory after an erase, if I reset my board between the two operation. Everything the erasing, writing, indirect reading, memory mapped reading work on their own, but not after erase without reset. I read out all 3 status registers, they are the same before and after the chip erase. (Of course I set the write enable bit before trying to write into the memory) Any idea what could be the problem?

I want to design a baord with stm32h7b0zbt6 with extranal sdram chip W9825G6KH-6. I get PG15 with FMC_SDNCAS alt func in datasheet as below:But when I looked the PG15 alt func config I get as below info, I could not found an alternate function number for FMC_SDNCAS here ?? why they are not consistent ? 

NUCLEO-F411REI have ADC1 to DMA in a circular buffer 4 samples long (ADC_VAL). I then use a TIM1 interrupt to send the contents via UART to a PC. int16_t ADC_VAL[4]; ... HAL_ADC_STart_DMA(&hadc1, (uint32_t *)ADC_VAL, 4); /* TIM1 callback */ void HAL_TIM_periodElapsedCallback(TIM_HandleTypeDef *htim) { HAL_UART_Transmit(&huart2, (uint8_t *)ADC_VAL, 16, 10); }   Should I have declared ADC_VAL as a uint32_t ?