STM32 MCUs Products

Hello,I had two related questions to clarify - 1. Can multiple Op-Amps be used in the differential mode simultaneously and their output fed to ADC for measuring input DC voltage?2. Also, since the Op-Amps inside the STM32G4 MCU are not rail-to-rail, they only output 0-3.3V for the given input. I am only interested in measuring DC input. Connecting the Op-Amp GND to system ground (0V) would give me the full range of output for DC (NOT 1.65-3.3V, but 0-3.3V), right? Thanks.

Hi all,Board: STM32H745I-DISCOIDE: 1.16.1 I am facing some issues with trying to execute code on the SDRAM. I have a 2nd stage bootloader that loads the user application onto QSPI located at 0x9000 0000. After that, I copy the user application code to the SDRAM 0xD0000000. This part works as verified in the debugger. However when I try to jump to the SDRAM address, my program is not executing. And it seems like the SDRAM has lost connection? Attached below is the image(sdram_becomes_unreadable.PNG) where my bootloader jumped to the SDRAM address but unable to read from the SDRAM. There is no hard fault.. Background: I have tried to load the user application onto QSPI and jump to the QSPI address, my program executes successfully. I have checked my MPU configuration to make sure that SDRAM is MPU_INSTRUCTION_ACCESS_ENABLE. Below is my MPU configuration&n

Hi,I am using LPUART and LPDMA on STM32U575. But I am getting Data Transfer Error.I have tried LPUART with GPDMA it works fine but LPUART with LPDMA giving Data Transfer Error.So I have two questions:1. Can we use LPUART & LPDMA together?2. What will be the cause of Data transfer error and how to configure LPDMA ?Can you please guide me on this?

I was going through the reference manual of STM32G4 series MCU. I saw information on using Op-Amps inside the STM32G4 as Inverting and Non-inverting amplifiers. There was no mention of them used as differential amplifiers, can they be used as differential amplifiers?

Heyho,how can I put a constant at the end of the STM32's used flash? (using: STM32CubeIDE)Not at a specific address (that's not a problem), but I'd like to have a constant always at the end of the used internal flash, independent of any other source code changes.I just find that there's some ASCII characters = "ASCII" (twice) and lots of 0x00 at the end of my H7 and F7 bin files - that from my sources or placed by CubeIDE? Thanks!

Hi, I have problem config LTDC for 1280x720 @60Hz. Without caching it works no problem, but slow. We are using 32MB SDRAM 16bit, config at 100MHz. When we use MPU to cache SDRAM, code as below: ``` MPU_Region_InitTypeDef MPU_InitStruct; /* Disable the MPU */ HAL_MPU_Disable(); // Region 0: All 32MB cached MPU_InitStruct.Enable = MPU_REGION_ENABLE; MPU_InitStruct.BaseAddress = 0x60000000; MPU_InitStruct.Size = MPU_REGION_SIZE_32MB; MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS; MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE; MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE; MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE; MPU_InitStruct.Number = MPU_REGION_NUMBER0; MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0; MPU_InitStruct.SubRegionDisable = 0x00; MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE; HAL_MPU_ConfigRegion(&MPU_InitStruct); // Region 1: Last 4MB as non-cacheable f

In this code I want IDs 0x100 and 0x200 should only be accepted but in my code all IDs are accepted. How to resolve this?/* 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" /* Private includes -----------------------------------------------------

Hello STM Community,I am developing a custom board based on the MB997E reference design. In this design, the EMIF02-USB03F2 (USB ESD/EMI protection device) is used, but since this part is now obsolete, I am migrating to the USBDF01W5.I have updated the schematic accordingly (attached). The design also uses:STMPS2141STR (USB power switch)USBDF01W5 (replacing EMIF02-USB03F2)Standard USB connector (475900001)I would like to request the STM experts and community to please review

Do you know the specified values for tr, tf and THSE?

Hey everybody,I was wondering if someone could help me correct my firmware that I've written.I created a custom board using the STM32C011F4P6 MCU. I put an FTDI UART-to-USB converter on the board to be able to view outgoing messages from the custom board on my laptop. While writing the firmware needed to demonstrate this functionality of the board, I referenced the C011 reference manual. There, STM describes the following steps to take when transmitting a character via USART, on page 752. I have tried to follow their advice to the best of my ability, but I notice that my board hangs while waiting for the transmission of a character to complete.My testing code (in my main.c) is shown below:int main(void) { char msg[] = "d"; // initialize debug LED user_led_init(); // initialize the usart usart_init(); while (1) { // transmit string of characters (one character here) usart_write_chars(msg,

Hey, we have purchased the Nucleo board H7S3L8-B02. We always run in a timeout during USB core reset. This problem seems quite popular with multiple forum posts. However we still didn't manage to get it to run. I will give a set by step explanation of what we've done. Maybe someone catches the mistake. We made all of our settings in "Application", none in "Boot".USB_OTG_FS settings:USB_OTG_FSMiddleware CDC settings:  

Hi,I am trying to set up bootloader on my STM32G030, via usart. When I enter it and send start command (0x7F) I do get ACK response(0x79). I cna read ID and protocol verions, but when I try do use "Go" command to start my application, it gets stuck.What I am sending and responses I get from bootlaoder:Send:  0x7F    (start)Response: 0x79Send:  0x21    0xDE    (go command)Response: 0x79Send:  0x0800004 0x04 (my application program is at address 0x08000000) (0x04 is length of address in bytes for checksum)Response: nothing I assume I am doing something wrong with checksum value, but I cant figure out what.

Hey all,I’m trying to squeeze the lowest possible STOP1 current out of an STM32U031F8P6 (TSSOP-20), no external crystals. The board itself looks fine: in the deepest mode (Shutdown/Standby) I see < 0.5 µA, so I don’t think it’s a hardware leak.Goal (later): run ADC at 1 kHz triggered by LPTIM1 from LSI, push to DMA (circular), and only wake after 1000 samples (DMA TC). While that runs, the core should sit in STOP1 (low-power regulator).Problem (now, with everything stripped):Even with a minimal firmware that goes straight to STOP1 and (supposedly) nothing enabled, I measure ~5–6 µA average at room temp. The current trace shows a baseline of ~4.2–5 µA with short spikes to ~10–12 µA every ~100 ms. That really looks like something waking up periodically.What I see on the analyzer (≈3 V supply):Baseline settles around 4.2–5 µASpikes to ~10–12 µA every ~100 msAverage ≈ 5.2 µAIf I switch t

Hello, I am using the STM32F407VGT6 microcontroller for a project involving GPIO interrupts, but the interrupt is not triggering reliably. Despite configuring the interrupt settings, it occasionally works, but other times it misses the edge completely.Here’s my setup:GPIO Pin: PA0Interrupt Mode: Rising edgeInterrupt Priority: Low (priority 5)NVIC Configuration: Enabled for this pinDebouncing: Software debouncing appliedI’ve attached the STM32F407VGT6 Datasheet for this model if that helps in troubleshooting.Has anyone experienced similar issues with the STM32F407VGT6? Any tips on debugging or configuration would be appreciated.Thanks in advance for your help!

I am developping STM32F469 with TouchGFX to display with LTDC in RGB888. I can display an image in the internal SRAM. However, when trying with SDRAM, the screen truns black, and the debugger can only read 0s. But when I tried with the framebuffer reader offered by ST, I can still read the image which seems to be already loaded into the SDRAM. Is there any suggestions to figure out the issue to give a final solution?

Hi @Amel NASRI ,Does STM32H755xI support OTP (One Time Programmable) memory in it's flash like STM32BH7B3x?Muthukrishnan

Hi, On the STM32F303, the TIM1 timer is running in input capture, slave mode – reset, with the trigger source set to TI1FP1 (CH1 direct rising, CH2 indirect falling) to record the incoming stream. It operates with DMA in circular mode using two buffers (separately storing the duration of the high and low states). I want to further develop the project, and I have two use cases: 1) I want to forward this signal unchanged with minimal (or no) delay using TIM15. 2) In the DMA interrupts TIM_DMACaptureHalfCplt and TIM_DMACaptureCplt, I want to modify the original waveform and then output it through TIM15. In general, I want the processor to act like a “repeater.”Any hints would be greatly appreciated — maybe the solution is trivial, but advanced timers are still a bit of a mystery to me ;)   regards  

HeyI work with the eval-board Nucleo h743ZI. I implemented sine wave playback using the DAC and DMA, and everything worked very well.After that, I designed my own board with the same microcontroller and added an external 25 MHz crystal.I couldn’t get the 25 MHz clock to work.This is the cofiguration:I try to debug my code and I saw that I get error at SystemClock_Config:...if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}

Hello,I'm using STM32G0B1RCT6 use cubemx generate cdc project works okbut when I edit  endpoint to 0x03 it Not working properly USB packet capture  endpoint 0x03   returns stall ny Idea about this is

Hello we try to use the backup sram on 0x3880 0000 .We have build the software :#define BKPSRAM_BASE 0x38800000UL #define BKPSRAM_SIZE 0x1000UL typedef enum { BkpSram_Init = 0 , BkpSram_Wait = 1 , BkpSram_WriteStr = 2 , BkpSram_ReadStr = 3 , BkpSram_Read8 = 4 , BkpSram_Write8 = 5 , BkpSram_Read16 = 6 , BkpSram_Write16 = 7 , BkpSram_Read32 = 8 , BkpSram_Write32 = 9 , BkpSram_Reset = 10 , }En_BackupSramCmd; typedef struct { uint32_t counter; float temperature; char name[16]; } Bkp_StrTest; Bkp_StrTest BkpStr_Test = { 42, 25.5f, "STM32H735" }; Bkp_StrTest BkpStr_Read = { 0}; typedef struct { En_BackupSramCmd Cmd; Bkp_StrTest *StrTest; Bkp_StrTest *StrRead; }Str_BackupTest; Str_BackupTest BackupTest; void BackupSRAM_Test(void) { Str_BackupTest* this =&BackupTest; switch(this->Cmd) { default: HAL_PWR_EnableBkUpAccess(); HAL_PWREx_EnableBkUpReg(); while ((PWR->CR2 & PWR_CR2_BRRDY) == 0) {}

Hi,I'm working on a design containing a STM32U535. I need to connect it to a SDHC interface (µSDHC connector). The STM32U5 documentation talks about a SDMMC1_CKIN signal. It is not clear to me if this signal is always required or not. I think the documentation is not clear on this.I do not use external transceiver and I don't need UHS-1 speed (1.8V mode).Is there a reference design with a STM32U5 and a (µ)SDHC connector ? I have not been able to find one.Nicolas

Hello,I want to use the TW9992 NTSC/PAL Video Decoder for STM32N6 to transfer an NTSC camera (720x480 resolution) to the MCU via MIPI-CSI and display it on the screen. I have attached the code below.static void MX_DCMIPP_Init(void) { /* USER CODE BEGIN DCMIPP_Init 0 */ /* USER CODE END DCMIPP_Init 0 */ DCMIPP_CSI_PIPE_ConfTypeDef pCSI_PipeConfig = {0}; DCMIPP_CSI_ConfTypeDef pCSI_Config = {0}; DCMIPP_PipeConfTypeDef pPipeConfig = {0}; /* USER CODE BEGIN DCMIPP_Init 1 */ /* USER CODE END DCMIPP_Init 1 */ hdcmipp.Instance = DCMIPP; if (HAL_DCMIPP_Init(&hdcmipp) != HAL_OK) { Error_Handler(); } /** Pipe 0 Config */ pCSI_PipeConfig.DataTypeMode = DCMIPP_DTMODE_DTIDA; pCSI_PipeConfig.DataTypeIDA = DCMIPP_DT_RGB565; pCSI_PipeConfig.DataTypeIDB = DCMIPP_DT_RGB565; if (HAL_DCMIPP_CSI_PIPE_SetConfig(&hdcmipp, DCMIPP_PIPE0, &pCSI_PipeConfig) != HAL_OK) { Error_Handler(); } pCSI_Config.PHYBitr

Hello,Can someone please point me to a template proejct with the AI engine, ethernet, UART and graphics library correctly configured? Also, can we also get FreeRTOS + micro-ROS running on this? Any help would be much appreciated. Best Regards

Dear ForumIm using the SPI of STM32 H7 43ZI.-In master mode,full duplex, not problem: Transmit and receive data precisely, up to 2Mbit/sec (limits come from cable lenght) .Each pack is 24 bytes.-In slave mode, this is what i do  (master at 200Kbit/sec):  a)FIFO LEVEL=2 BYTES  b)Master send 2 bytes . The STM32 Slave Receive this 2 byte , and INT roudine is activate   c) save in a buffer , and load 2 byte to be TX.And repeat,  up to 24 bytes. Problem is:     *  I get 24bytes ok     *no data are trasmitted.. MISO is fix to low The simplified version of code is this:   //SPI3 Slave uint8_t *p_TXDR_SPI3= &(SPI3->TXDR); uint8_t *p_RXDR_SPI3= &(SPI3->RXDR); void INT_SPI_3_RXTX_8BIT(SPI_HandleTypeDef *hspi3) { if ( ( (SPI3->SR ) & ( SPI_

Greetings,   I am using STM32-L073RZ nucleo board for the testing of ADC watchdog and sleep mode. I want to keep my instrument in sleep mode and when ADC readings increased by few counts then I want to wake-up my controller.    I have written below mentioned code but it seems like my controller is not getting into sleep mode. "uwTick" keeps increasing and ADC watchdog interrupt is not getting triggered. Also, there are no other interrupts in use.    I have referred this other post and my settings are same as him but I am not using DMA.  (Link)   Code:  /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @br