STM32 MCUs Products

I'm trying to find the best approach to accomplish the following: Read audio samples from a digital microphone using the ADF1 peripheral and use the LPDMA controller to store those samples in a SRAM4 buffer. An interrupt or event should occur when the buffer is half full and full. I'd like the LPDMA operation to be circular so I don't have to re-initialize it after every buffer write. Performing this task using as little power as possible is important, so the microcontroller should enter STOP2 mode while filling the bufferIt seems there are two ways to configure an LPDMA channel in CubeMX: Linked List and Standard Request Mode. As a side note, there is no mention of Standard Request Mode in the reference manual, but there is something called Direct Programming Mode mentioned. I assume these are different names for the same thingGetting back to my question: Which is the best mode to use for achieving the above goal? Linked-List or Standard Request mode? I initially thou

I am designing a board with an STM32H725ZGT3. I would like to multiplex external Flash and RAM on the same Octospi bus and use the external flash as execute in place memory. Is this a supported configuration? 

I have been trying to configure Nucleo STM32F401RE board as an I2C Slave and Xavier Nx as Master but it is throwing me BUSERR.I am adding some the main.c file below to explain my configurationmain.c/* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include

I am working with the STM32H7A3ZI microcontroller and planning to integrate an external flash memory to run application code. The flash memory I intend to use supports both standard SPI and QSPI interfaces.I would like to confirm the following:Are there any specific bootloader pins required for interfacing with external QSPI flash for code execution?Can I connect the flash to any QSPI-compatible pins, or are there dedicated QSPI pins that must be used for successful boot and execution?Does the STM32H7A3ZI support booting directly from external QSPI flash, and if so, what configuration is required? Your assistance in clarifying these points would be greatly appreciated as I finalize the hardware design. Thank you in advance for your support.

When Pb4 is reset, it is at a high level. Can't this be configured in the hardware? It's too disgusting. The PCB has been designed and encountered this pit.

Hi Guys,I am recently facing a very rare problem on stm32 nucleo h755zi- q i am working with ltc6804ic for a BMS and am facing the following issue:Whenever i upload the code on the stm32 it crashes, and says no debung info available etc, after this i can not upload any code to the board unless i pull the boot0 pin to 3.3 (CubeIde says no stlink connected).Each time this happens i have to put the MCU to boot mode and then connect to it via the cube programmer and then i have to mass erase the chip , after this the board works fine with every other code, except my main code, on top of that , the same was working fine on the same board and randomly works fine like lets say 1 out of 10 times, (same code , no changes made, works sometime , some time it doesn't )This is not a STLINk problem for sure (looks like one when the cube ide says no stlink detected or cant enter debug mode etc etc , i have attached some screenshots to

Hello! I am using Zync SOC with STM 32 G4 series. I am targeting 1Mbps baud rate using CAN protocol. I am able to achieve 1Mbps using external loopback on STM. Can someone help me out with bit timing and prescaler values for STM 32 and Zync SOC

Hi ST Community,I’m working on a CAN FD project using the STM32H753VIT6 and facing a limitation with data phase bitrate while using Bit Rate Switching (BRS).My Setup:Controller: STM32H753VIT6FDCAN clock source: PLL1QPLL1Q output: 40 MHzFrame format: CAN FD with BRS (FDCAN_FRAME_FD_BRS)Nominal (arbitration) bitrate: 1 MbpsTarget data bitrate: 2 Mbps or higher Problem:Despite the configuration, I'm not able to achieve more than ~1.92 Mbps on the data phase. Even when I reduce the number of time quanta or adjust prescalers, the speed does not increase beyond this limit. My Questions:

1. Product DescriptionThe product is an automotive remote controller that uses STM32L412RB as an MCU.The product uses a rechargeable battery and has a power on/off function for storage and delivery. 2. ProblemSome products (0.2%) stop operating due to MCU Latch up during the power-on process when powering on from the power-off state.Some products stop operating after initial abnormal operation under the same conditions.The reason why the operation is judged as MCU Latch up is that when the operation stops, MCU Watchdog reset and external reset do not occur.Only when MCU VDD is turned OFF and then ON, it returns to normal. 3. Self-reviewWhen checking the voltage of the MCU's VDD in the power-off state of the product, it was confirmed that it gradually increased from 0V to 0.35V.In the power-off state, leakage current occurred due to the connection f

I want to use LPTIM1 of the STM32G0x1 to wake up the MCU, if it's not already awake, and start a DMA multichannel single conversion. I think I know how to do the DMA/ADC part after getting the ADC_MultiChannelSingleConversion example running; I'll the code from that project to this one later.. But the most part is waking up. Here's the relevant part of what I have:int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_LPTIM1_Init(); /* USER CODE BEGIN 2 */ /* Enable Power Clock */ __HAL_RCC_PWR_CLK_ENABLE();

Hi,I have two identical flight controllers from BetaFPV:https://betafpv.com/products/f405-4s-20a-toothpick-brushless-flight-controller-v5-blheli_s-icm42688?_pos=11&_sid=55080f3df&_ss=rboth using an STM32F405 MCU. I noticed that the unique device IDs (UIDs) on both are suspiciously similar. Here they are:0025001e3133510c34383739002300283133510c34383739As you can see, the last 64 bits (3133510C34383739) are exactly the same on both chips. Only the first 32 bits differ slightly.Since STM32 MCUs are supposed to have globally unique 96-bit identifiers, this seems strange. Could this be a sign that the chips are counterfeit or cloned? Or is it possible (though unlikely) that chips f

Hi, ı am trying to send some buffered data via SPI but it doesnt work. PA5-6-7 are automatically set by SPI and I also enabled PB6 for CS. Normally my algorithm needs to:1) Send 3 HF pulses to low and start interleaved ADC simultaneously.2) Take 1400 samples by DMA ADC(ADC Buf is 700 but it is interleaved so 1400 samples)3) Buffer this data and when DMA finishes, send it via SPI DMA4) Wait around 40ms and repeat You can find my main.c below.Also in logic analyzer that ı set for spi, I can kind of see the pulses but they and also CS pin are very unstable. 

Hi all,I'm working on the STM32U5G9J-DK development board and trying to enable USBX-based MSC (Mass Storage Class) device functionality.My actual product is a battery-powered device, so USB Power Delivery (PD) is not an option. However, it's critical for my application to detect when a USB host (e.g., PC) connects or disconnects to/from the device, as I need to perform certain app-level tasks on both events.Since the USBX MSC device example was missing in CubeIDE, I updated the USBX CDC ACM device example to function as an MSC device. The device starts and I receive the "USBD_STORAGE_Activate" callback when a host is connected (when I call HAL_PCD_Start directly after initialization), but I do not receive the "USBD_STORAGE_Deactivate" callback when the host disconnects.I also tried enabling the VBUS sensing option, but the example started misbehaving when I selected that. So I had to disable it.

Hi ST Community Team,I am currently working with the STM32U585x SoC family and need assistance with configuring the ADC for multiple channels. My project involves:One differential input signal using PA0 and PA1 (Channel 5)Six single-ended input channels: CH7, CH8, CH9, CH10, CH11, and CH12Could you please guide me on the following:How can I read data with high precision for the differential signal (PA0 and PA1, CH5)?How can I read data from the single-ended channels listed above?I would appreciate your help in configuring both types of signals in a single project, Please share the STM32 Cube configurations and Firmware of it.Thank you in advance for your support.

I am usi the IDLE event functionality of UART with HAL_UARTEx_ReceiveToIdle_IT() on an STM32G473QET6 controller. Is there a way to change the idle timeout using STM32CubeMX, or are there alternative methods to modify this setting?

Hi,I'm currently working on the STM32G491 board and implementing CAN communication. With the system clock configured using PLL at 80 MHz, I have set up the CAN peripheral with the following parameters:   hfdcan1.Init.NominalPrescaler = 10; hfdcan1.Init.NominalSyncJumpWidth = 2; hfdcan1.Init.NominalTimeSeg1 = 13; hfdcan1.Init.NominalTimeSeg2 = 2; hfdcan1.Init.DataPrescaler = 2; hfdcan1.Init.DataSyncJumpWidth = 2; hfdcan1.Init.DataTimeSeg1 = 13; hfdcan1.Init.DataTimeSeg2 = 2; hfdcan1.Init.StdFiltersNbr = 10; hfdcan1.Init.ExtFiltersNbr = 0; With this configuration: The nominal time quantum (TQ) is 125 ns Nominal bit time is 2000 ns Bitrate is 500 kbps

Hello everyone,I develop a project with STM32U575 and I want to use LPUART with LPDMA, normally I use LPUART with normal DMA in my other stm32L4 projects but here I couldnt work with this peripherals. Low power is not a critical issue of this part of project. So I just want to use LPUART with LPDMA in a normal way. First picture is my old settings in L4 series and second picture ise for current U5 mcu. Do I miss something ? Where can I find and example for LPDMA and LPUART for Standart Request Mode. Thanks

Dear ST trams,I am using STM32H750 for a project. In the STM32CubeMX, I configured two ADCs in Dual regular simultaneous mode only. Also I am using DMA and a timer for trigger. I have activated 6 channel for each ADC. The sequencing of channels is as below:ADC1: ch18 -> ch16 -> ch2 -> ch14 -> ch15 -> ch3ADC2: ch10 -> ch4 -> ch2 -> ch5 -> ch9-> ch7In the Keil debugging mode, when I am checking the ADC_BUFFER, I see that the sequence of channels is different. It seems that ADC2 sequence is shifted by one (like this: ADC2: ch7 -> ch10 -> ch4 -> ch2 -> ch5-> ch9 ). Could you please help me in this issue?Could the problem is the clock prescaler?Best regards,Davood.

Hi everyone,I'm having trouble flashing my STM32 microcontroller using an ST-Link V2. STM32CubeProgrammer detects the target voltage, but it fails to connect to the MCU. Here's a summary of my setup and what I've tried:Setup:Microcontroller: STM32H723ZGT6ST-Link Version: ST-Link V2Flashing Tool: STM32CubeProgrammer (latest version)Connection Interface: SWDTarget Voltage Detected: 3.12 VWhat I’ve Tried:Verified SWD wiring (SWDIO, SWCLK, GND, VCC)BOOT0 set to 0 (boot from flash)Checked for power on the boardQuestion:What else should I try to get the MCU detected? Could this be a clone ST-Link V2 issue, or something else with my MC

How do I configure the DFDSM peripheral using CubeMX?I do know about the application note AN4990 and have read it. I also saw this threadhttps://community.st.com/t5/stm32cubemx-mcus/stm32h753-stpms2l-dfsdm-pt100-example-using-stm32cubemx/td-p/172652and have looked at the example in the stm32cubeh7 firmware repository, but I does not contain the CubeMX .iocIs there any example or tutorial?

Hi,I am trying to establish a successful transfer using SPI in master full duplex DMA mode using a NUCLEO-H7S3L8 board (STM32H7RSxx family)..The runs and SPI data can be seen from the MOSI pins, but with one problem: data is not successfully sent.In the following photo:504B @50MHz are being transmitted (CH1 trace - yellow one - is SCK, CH2 trace is CS):total time of transmission is:20us * 3.1 = 62usvs(504*8/50e6) = 80.64uswhich is the time required for such a full transmission, meaning that approx. 116 B (

I'm designing a custom PCB with STM32U545NEY6Q and I don't need to use the SMPS, only the LDO. I'm not sure how to connect the SMPS, I found a post about the STM32H745IIT6, and followed the same procedure, but should I do that? I followed the datasheet recommendations and connected the pins as shown in the image below.I didn't find a similar version of the MCU without the SMPS, and the MCU dimensions fit my design perfectly. Can you tell me if th

So i'm working on a way to generate pulses with both Timer 1 and 8 (advanced motor control timer) independently in OPM PWM mode 2 with the Slave Gated mode to control a each a stepper motor driver. I want to use as much as possible the hardware because sometimes the frequency of the steps are really high and the interruptions are slowing down the process.Both are using the TI2FP2 on their channels 2 (to stop the timer when raised) for some home sensors (only enabled when going on the home sensor direction by changing the slave mode) and generating the pulse (pwm) on the channel 3 with use of the RCR register to trigger the amount i want thanks to the OPM mode, and sometimes i change the ARR register to modulate the frequency of the steps and then reload the RCR register to be updated on the next UEV.I'm also counting the number of pulses done by each timer with a secondary timer using the TRGO OC1 (and that's works perfectly) to see if my motor loose steps when doing a m

I've setup the FMC peripheral of an STM32H7 to read registers from an FPGA by creating a faux SRAM interface on the FPGA.  This works just fine so long as the FPGA has no issues but if, say, the FPGA is unprogrammed or the FPGA data bus gets hung, this forces the STM32 to hang.  It doesn't seem to be able to recover in this event.Is there a way to timeout the memory bus/FMC peripheral to recover from this?

In the STM32F407 DS, ADC characteristics table has the following footnotes:IMO 2. follows from 3. (which is a more stringent requirement); thus 2. is redundant and confusing.JW