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Hello everyone,I was reviewing the AN4899 Application Note and noticed a potential logic inconsistency that might lead to misunderstanding the GPIO output stage. I have prepared a short analysis and a proposed correction below. I would appreciate it if the technical team could take a look. IntroductionThis report investigates a potential logic inconsistency identified in the STMicroelectronics AN4899 Application Note. The analysis suggests that the logic gates in Figures 15, 16and 17 might be drawn incorrectly, specifically the part controlling the P-MOS transistor. Due to the structural similarities between these figures, the analysis is explained based on Figure 17.Signal Mapping and Logic AnalysisThe following diagram (Figure 1) has been labeled with signal names to track the logic flow from the digital output to the transistor gates:Figure 1Figure 1: Labeled Figure 17 from STMicroelectronics AN4899 Application Note. Red arrows and signal labels (SIGN1-SIGN6) have been added fo

Hello ST community. I am trying to understand the support the otfdec https://wiki.st.com/stm32mpu/wiki/OTFDEC_internal_peripheral internal device has or will have in the OpenSTLinux. Can anyone suggest reading material on supporting the otfdec for mp2?

I am working on Acoustic vehicle alerting system (AVAS). May I know where Can I get Pinout details for all variants of SR5E1E7 MCU ?

Hi, What is the official moisture sensitivity level (MSL) for STM32F072CBT6TR? I found conflicting information showing both MSL 2 and MSL 3.

Hi ST team,We are going to use L6598D PWM controller (Half bridge topology) followed by PFC IC L4985B for our variable power supply design.We need two models for variable (programable) power supply (Model 1 & Model 2) as below specifications. So, can we generate below mentioned wide output voltage from IC L6598D with Half bridge topology?For Model 1 Vout: 3V-63V/5A (80W maximum with auto ranging)For Model 2 Vout: 3V-23V/20A (80W maximum with auto ranging)  RegardsVikram

Hello community,I have this problem. I have a project with the STM32U575RGTx microcontroller.It includes also FreeRTOS (Version 1.3.1) and a TouchGFX project (Version 4.26.0).With this system configuration: Timebase Source TIM17 The TouchGFX project has screens that require more or less CPU, the problem that I have is that when one or other screen is selected the execution frequency of the FreeRTOS tasks and the HAL_TIM_PeriodElapsedCallback change their execution frequency, so I can not have a valid time reference to do other things in my firmware application. Has anyone faced the same problem? Much thanks in advance!  

Hi, I'm working on the STM32H750B-DK discovery board and need to combine two key functionalities:1. Ethernet connectivity based on the LwIP stack (using the example from the `stm32-hotspot/STM32H7-LwIP-Examples` repository).2. A TouchGFX GUI that stores its assets (images, fonts) in the external QSPI flash (`MT25TL01G`) due to the limited internal flash (128KB).I have both components working **individually**: - The **standalone Ethernet example** (STM32H750_Disco_ETH) works perfectly – I can ping the board at `192.168.1.10`.- The **standalone TouchGFX application** works when the external flash is properly initialized via a bootloader, and assets are loaded from `0x90200000`.The challenge is to merge them into a single project where the application code runs from internal flash (the `APP_FLASH` region) and the Ethernet stack functions correctly alongside the TouchGFX GUI. ### **Current Memory Map (Linker Script)** I am using the following memory partition to accommodate both: `MEMORY {

I am new to STM32CubeIDE  2.0.0 environment and I cannot debug my first project. See failure message in attachment.  What do I need to do to debug in this environment?  Is there instructions hidden somewhere that I need to follow? 

Hello, I made a lot of project with Touchgfx . I started a new project with  STM32U599ZI, IAR 9.60.3 , Touchgfx 4.26.1 , CubeMx 6.17.0 , STM32CubeU5 MCU package V1.8.0.  I created project from Cube, than I double clicked touchgfx file under TOUCHGFX folder.I created a dummy project with only a red box and I clicked generate code on TouchGFX as I always do. But when I open IAR project I cannot see TouchGFX folder on IAR workspace window  and when I try to build project, IAR gives a lot of erros about not founded Touchgfx files.  Touchgfx files and folders ara exist in my project folder but not in IAR workspace window.My colluage has same proglem with STM32L4R5A mcu . I tried rebuild all, clean project, creating project from CubeMX from zero, but I could not find a solution.Can you give any solution.

Thread split from this post. I am using STM32CubeIDE version 2.1.0. CubeMX generates a project for STM32F769I-DISCO without BSP, but the BSP for this board clearly exists in STM32CubeF7 and is used in official examples. Is there a way to add BSP directly from CubeIDE? If not, what is the correct way to integrate BSP into the project? Thank you.

Hi, I have two questions regarding ST-Link V2 programming: 1. For connecting and programming via SWD, is it safe to connect only NRST, GND, SWCLK, SWDIO without the Target VDD pin? We might “fake” the voltage for space reasons. Could this cause any issues?   2. I assume ST-Link flashes the MCU memory directly via SWD, not through the bootloader like USB DFU. Can anyone explain in detail how each pin behaves during programming, and if NRST can be omitted in some cases?   It would be helpful if there is an official ST document explaining this. Thanks!  

Hi everyone,I'm trying to use OTG in FS Mode with DMA enabled (I know it's not a consistent use case, as FS datarate is pretty low)But still, I changed the code in Drivers\STM32F4xx_HAL_Driver\Src\stm32f4xx_hal_pcd.c :...#if defined (USB_OTG_FS)/* Disable DMA mode for FS instance */if (USBx == USB_OTG_FS){    hpcd->Init.dma_enable = ENABLE; //FGE: try to use OTG FS with DMA enabled}#endif /* defined (USB_OTG_FS) */...But it does not enumerate. This is the only change I brought to the CubeMX generated code Any hints ?ThanksFabrice

Hoping someone can assist.I have a 2 x 8 segment numerical glass LCD that I want to drive from the MCU.See two images below & uploaded files with this request.snippet from LCD data sheet.snippet from CubeMX pin out view.This display is Static with total of 16 segments.Is there a convention when connecting LCD segments to the MCU pins?I cannot seem to find any guidance to show which physical pin on the glass segment LCD module needs to connect to which LCD_SEGxx pin on the MCU. If anybody has trialed this, could they provide any related information please.  Thank you.      

Hi, I am using the STM32U5G9 and trying to control a QSPI Flash (MX25L51245GXDI) using the HSPI peripheral. I am confused about which official HAL library and functions I should use for this specific configuration. Since the hardware is named HSPI but the Flash is QSPI, it is unclear which driver is the intended one. Could you please clarify which of the following should be used? HAL_SPI_... (Standard SPI functions) HAL_XSPI_... (Expanded SPI functions) HAL_QSPI_... (Quad SPI functions) HAL_OSPI_... (Octo-SPI functions) There is no stm32u5xx_hal_hspi.c provided in the firmware package, and using HAL_QSPI_... or HAL_SPI_... functions with the HSPI1 instance results in type-casting errors and compilation failures. Please provide the official recommendation on which HAL driver is mandatory for driving a 4-line Quad SPI Flash through the HSPI interface on the STM32U5G9 series. Best regards,

Post edited by ST moderator: title and post edited to translate the content. 我在stm32F412RGT6的数据手册的6.1.6部分看到关于滤波电容的描述，2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pin.从图中来看是以144PIN的芯片为例，但我使用的是64PIN的封装，是否也需要在其中一个VDD引脚放置4.7uf的电容，如果需要，是单独放置一个4.7uf还是与一个0.1uf并联放置 Translation: "In section 6.1.6 of the STM32F412RGT6 datasheet, regarding filter capacitors, it states: "2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pins." The diagram shows this for a 144-pin chip, but I'm using a 64-pin package. Do I also need to place a 4.7 µF capacitor on one of the VDD pins? If so, should I place a single 4.7 µF capacitor or connect it in parallel with a 0.1 µF capacitor?"

Please confirm the origin country​ of the STSPIN9P15TR&STSPIN9P23TR.I ordered the STSPIN9P15TR&STSPIN9P23TR from ST.com. Customs is requesting confirmation of the product's origin. 

Hi Engineer， Based on the data sheet, the marking of STH145N8F7-2AG should be "145N8F7 ", but the parts I purchased were with marking of "145N8F7-2". Could you help suggest whether I purchased correct parts? Thanks, Haddy

I am developing firmware with a Boot region and Application region split for OTA firmware update on STM32F469AIHX.[Environment]- MCU: STM32F469AIHX (Max core clock: 180MHz)- IDE: STM32CubeIDE- HAL Library: STM32CubeF4- Flash layout: Bootloader (Sector 0~N) / Application (Sector N+1~)[Problem]When the flash is split into Boot and App regions, the system does not operate correctly at 180MHz.However, setting the core clock to 128MHz works fine.Also, the Application running alone from address 0x08000000 works fine at 180MHz.[What I have already tried]- Reset CubeMX configuration to default, only changed flash memory layout- Verified VTOR is correctly set to APPLICATION_ADDRESS- Verified SysTick_Handler calls HAL_IncTick()- Confirmed uwTick does not increment when running at 180MHz after jump- Removed HAL_RCC_DeInit() / HAL_DeInit() before jump in bootloader- Tried setting SCB->VTOR before HAL_Init() in application main()[Bootloader jump code]__disable_irq(); SysTick->CTRL = 0; SysTic

Hi,I'm getting info on playing mp3 files with my custom Nucleo-U5A9 (originally a NUcleo-U575, I replaced the MCU and added xtal). I'll be using the audio codec TLV320AIC3110 with I2C and SAI from the U5A9. I'll be using ThreadX, FileX an a uSD card. The mp3 files would be in the uSD.I read here about X-CUBE-AUDIO. But the decode spirit mp3 libraries seem to be for the core M3, M4 and M7. Will any of these work with the U5A9 (core M33)? If not, what other options are there?Thanks

I'm using the STM32G474 at 170MHz. Is it possible to simulate hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV512; since the G474  only recognizes up to ADC_CLOCK_ASYNC_DIV256; I need very slow readings from the ADC. Thank you Valter

I am unable to inspect the device registers for my STM32U545 project. I can see the Cortex core Registers, and see them update as I step through the initialization.The tooltip mentions an svd file, how can I check if it's set up correctly?

Hi,How do I generate a project for STM32CubeIDE using STM32cubeMX2? Apparently, the only options are cmake, IAR, and open-cmsis (Keil). And is it possible to open examples from STM32CubeC5 using STM32CubeIDE?Ari

Hello,I am using STM32U575RGT6 with CubeMX 6.17 and the bundled X-CUBE-FREERTOS v1.4.0. After enabling USE_TICKLESS_IDLE, I observed that the tick period becomes inaccurate.Specifically, the delay appears to be consistently shortened to about 0.875× of the expected value.void StartDefaultTask(void const *argument) { while (1) { HAL_GPIO_TogglePin(LED_RED_GPIO_Port, LED_RED_Pin); vTaskDelay(400); } }With USE_TICKLESS_IDLE disabled, the delay is approximately 400 ms as expected.After enabling it, the delay is reduced to about 350 ms.I have created a minimal project to reproduce the issue, and it shows the same behavior consistently. The project is attached.Could anyone help explain the cause or suggest a fix?Thank you.

Dear Community, I am researching how to use a 50Mpx MIPI CSI-2 2 LANE RAW 10 sensor with stm32N647.The idea is not to use the full sensor, instead using analogue/digital crop and windowing on the sensor to capture a specific part of the image and downsize it to a smaller size before entering the ISP of the MCU. The sensor doesn't have scaling.So after all steps I am left with a frame size that varies from 11.4 to 2.4 Mpx depending on cases.From there the image needs to be downsized to a buffer with a maximum size of 1024x768 px for the display.The question is whether the scaling of the ISP of the STM32N647 can handle downsizing and at what cost. The ISP is rated at 5Mpx 30fps but specifies it is possible above, the datasheet is vague about this.Thanks for the help.

Hello, I am experiencing an issue with my STM32U5G9J-DK2 board. Description: Board powered through STLINK USB LED LD7 is ON LED LD6 is ON LED LD1 is OFF I measured about 0.8 Ω between 3V3 and GND Component U16 overheats a few seconds after power-up No external circuit is connected I already tried: Another USB cable and power source Disconnecting all external peripherals My question:Could someone help identify where the problem might come from?Could U16 be defective or indicate a short circuit on the 3.3V rail? Thank you for your help.