STM32 MCUs Products

Please go and visit our wiki pages Basics of power supply design for MCU. This article covers general aspects about designing power supplies for STM32 based applications. It provides general guidelines on important characteristics, how to choose components, and optional features related to power supplies.The first part is about power supplies in general.Define the main characteristics of power supplies and their impacts on applications.Talk about types switched-mode power supply (SMPS) and low dropout regulator (LDO) and compare them.Provide important power management considerations.The second part specifies STM32 requirements regarding power supplies.Power architecture of STM32.STM32 specific requirements regarding power supplies.

Hello everyone,I have a stm32h573. I want to get 24 bit resolution. There were those who said I could do it in dual mode. Can I get 24 bit adc resolution using dual mode? There is a 36 bit CDR register. But I really want to know if it will give 24 bit resolution. Can you help? Thank you.

I'm trying to build a server using STM32F207 processor and LAN8742A I have used CubeIDE to generate the configuration code and modified as follows: 1) ETH -> Auto negotiation Enabled             -> PHY Address = 0             -> PHY SR Offset = 1F             -> PHY Speed Mask = 0x0004              -> PHY Duplex Mask = 0x0010              -> PHY Interrupt Source Flag register Offset = 0x001D              -> PHY Link Down Interrupt = 0x0010 Rest of the settings are default. Since I found these to be wrongly auto generated. 2) LWIP ->  LWIP_DHCP = Disabled                -> IP Address = 192.168.001.111             &nb

I am working on ble MS in B l4s5i iot kit. while searching the blog I got know how to connect it, and the connection is now happened, the connection is showing as led is blinking in the board of iot kit and the bluenrg name showing in the ble stm sensor app while scanning .But the realtime data of each sensors like accerometer is not changing as we see it in teraterm logs. Please help in this ,which all functions we need to use.

Hi St-community I'm having variations in temperature readings from the internal sensor on my STM32F103 MCU. The readings seem to differ at different time when , I restart power supply. I'm using the following code to measure temperature: //code   void measureTemperature(void){ Measured.temperature = (V31 - VSENSE * Measured.rawADCValues[3]) / AVG_SLOPE + 31.0f; if (Measured.temperature >= 90) { ProtectionVals.faults.overTemperature = 1; } } #define VREFINT 3.289f #define ADCMAX 4095.0f #define VSENSE (3.3f / 4095.0f) #define V31 1.57f #define AVG_SLOPE 0.0043f   I've verified that the code is functioning correctly, but I'm unsure why the temperature readings fluctuate after power supply restart. Any insights or suggestions to ensure consistent temperature readings across power cycles would be greatly appreciated.

Hello Team,Request for STM32H735-DK example codes for all peripherals with .ioc fileRegards,Sachin N@dee1  

I'm using STM32L4 nucleo board, before it was working fine but suddenly it started giving error while flashing the codeI have attached screenshots please help me out. I don't know what is the issue exactly.

Hello Friends I load mdk540.exe to my computer  5 times. But gives me an error like below.I could not resolve this. anybody can help me as soon as possible please.Many many thanks for nice and kind helping.Sincerely".../AppData/Local/Arm/Packs/Keil/STM32F1xx_DFP/2.4.1/Device/StdPeriph_Driver/src/misc.c(131): error: no member named 'IP' in 'NVIC_Type'131 | NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel] = tmppriority;"

Hello. I have STM32F767ZI nucleo board. I have created a new project and used default setup for the nucleo board. It have automatically set up some peripherals for me In my code, I want to print the debug messages to the console: while (1)   {   /* USER CODE END WHILE */   HAL_Delay(1000);   printf("hello");   /* USER CODE BEGIN 3 */   }   /* USER CODE END 3 */   }But the printf is not working. I remember doing simmilar excersise in the class and it did not require any additional setup. Can someone help me understand how printf works and how to set it up? Do I need to dedicate USART port for it?

I have a simple STM32H753VIT6 board with simple power circuitry and USB connection also 25Mhz xtal.I can program the board in DFU mode and verifies fine. I do not have the LSE xtal. not sure if it is needed for the USB operation. Complete circuit diagram attached. Can any one help me why am I failing with such a simple board. Thanks

Dear community, I have faced with the problem in our developed boards with STM32F407 MCU. The firmware is based on FreeRTOS, vector table is located as usually in the beginning of 0x08000000 (see part of list file below).   Idx Name Size VMA LMA File off Algn0 .isr_vector 00000188 08000000 08000000 00010000 2**0CONTENTS, ALLOC, LOAD, READONLY, DATABoards with MCU are flashed with USB-UART adapter and STM32 Flash loader demonstrator https://www.st.com/en/development-tools/flasher-stm32.htmlBoards have some parameters (configuration of sensors), stored in the Flash memory, so we used sector 7 for these data, and customer can update the information about these sensor parameters. Mainly boards works well, but some of them were returned from the customer as "works well, but now don't works at all".

HelloI am using 2 boards with SPI communication between them: STM32F412G-DISCO as the master, NUCLEO-G071RB as the slave. The MOSI direction works well, but the MISO direction doesn't works. Monitoring the MISO line via. oscilloscope shows that there is no communication in this line, also it is expected to be.The boards configuration:

Has anyone successfully used STM32f407 for reading and writing SD card using SDIO? I tried creating a project with SDIO using stm32f407 with a bit of code from the sample project of FatFS_uSD using (stm32F413). And I keep getting a timeout error from the function SDMMC_GetCmdResp1.Here's my main code:  /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2024 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. * **************************************************************************

Hi,I'm using STM32H563 and managed to set FLASH_EDATA1R_CUR as needed (EDATA1_EN="1", EDATA1_STRT="111"). Then I tried to read 64-Bit at once from Address 0x09000000. Unfortunately I get a hard fault. Is it intended to read more than 16 bit from the high cycle memory?Even with the debugger and Cube IDE 1.13.0 I have problems accessing the memory from high cycle data. It keeps saying, that the memory content cannot be obtained.Please give advice how to work with the high cycle data!Thanks,Johannes 

Hello.I buy board STM32F401Development Board V3.0 STM32F401CCU6  .Board workin and work usb, but me need can bus.I replase  SMM32F401 MCU on STM32F105RCT6.Board work and programming bun not work USB ((. DFU mode not work.I searching difference USB between SMM32F401 and  STM32F105. Not found ((.Please help do work USB on STM32F105.

I am currently designing a program using ST32G070 chip.As a question, I would like to create a program that will change what I was using as a PWM without using Cube Mx into a digital signal LOW or HIGH signal.I'd like to know how to change it.

Hi everyone,I'm currently working on developing a bootloader for the STM32L071 microcontroller and could use some guidance. I've outlined the basic structure of the bootloader code, but I'm looking for insights and best practices from those who have experience in this area.Specifically, I'm interested in:Recommended communication interfaces for bootloader implementation on the STM32L071 (UART, USB, SPI, etc.).Tips for memory layout and partitioning for both the bootloader and application firmware.Security considerations and techniques to prevent unauthorized firmware updates.Any example code or resources available for reference.Any advice, code snippets, or pointers to relevant documentation would be greatly appreciated!Thank you in advance for your help.Best regards,Manu

Hello everyone, I have designed my own card and used F103 uC on it. I want to measure battery voltage with DMA method. I hope to drive BLDC motor with this card one day :) So i need to measure phase voltages and BUS battery voltage. Due to speed issues, i thought DMA would be much better option.  So, forget about the phase voltages first. I just want to sense battey voltage.  I have defined some variables. I have voltage driver on the same line so i need to multiply every array value with multiplier. I eant to write buffer values to data array for true measurement of the voltage. Then i want to send this scaled values to my computer. #define Buffer_Size 5uint16_t V_BATT_ADC_Buffer[Buffer_Size]={0};uint16_t V_BATT_ADC_Data[Buffer_Size]={0};float V_BATT_ADC = 0.0;float V_BATT = 0.0;uint8_t V_BATT_Sense_Conv_End = 0;float multiplier_V_BATT = (3.3/4095)*(100+5.6)/5.6;&nbs

Hi, We are using STM32L010C6 Microcontroller, we need to recive the a fixed size of strings (10 charecters ) using interrupted method. But we are not able to receive the charecters completely and its get stuck on the cpltcallback function also. What could be the issue and please gibe me some auggestion to resolve this issue. Iam attaching the main file for the referanc.

I am trying to flash a STM32H735IGK6U using st-flash: st-flash --debug --reset write $(RSLT).bin 0x8000000I get below error here and there, What causes this? If I do st-flash reset and then st-flash erase it works fine again. Programmer/board type: Stlink-V3 Operating system: Ubuntu 22.04 stlink version: v1.8.0 stlink commandline tool name: st-flash2024-06-06T13:19:02 DEBUG common.c: *** stlink_write_debug32 0x00000031 to 0x5200200c2024-06-06T13:19:02 DEBUG common.c: *** stlink_read_debug32 0x00050000 at 0x520020102024-06-06T13:19:02 ERROR common.c: Flash programming error: 0x000400002024-06-06T13:19:02 ERROR common.c: Failed to erase_flash_page(0x8000000) == -12024-06-06T13:19:02 DEBUG common.c: *** stlink_read_debug

Hello, I would like to configure the DMA option for the SDMMC1 peripheral inside my STM32H747 microcontroller in order to communicate with an external SD in 4 bit wide bus mode using CubeMX, but the configuration setting doesn't appear among the configuration slots on the SDMMC1 panel. I was reading this link as reference. I also attached an image. 

Hi, I have and STM32F042 and an LCD with an ST7066U from NewHeaven Displays, it is a 3V3 specific version . I am trying to use 4-bit mode to save pins (I have enough pins for this project to use 8-bit but for future projects too it would be better for me to have 4-bit working). I've followed the data sheet exactly for initialising the display and then I simply type an 'A'. The display does nothing. I have been struggling with this for many days now. I have managed to get characters on the display but never from power up of the MCU and display. With other code I have that I was just trying anything and everything if I kept the display running and reset the STM32 multiple times I could get it to work somehow. This leads me to believe that I have missed something in the initialisation. But as far as i can tell i followed it exactly. I also attached a logic analyser to see that the information is being sent correctly (Results attached) and it shows that the data is being s

I need to interface my board using USB type C.I know there's an API for USB type C. Is there a way to download this API, or the SDK that has this API?  

Hi,I'm trying to setup this new RAM chips on STM32H735 in OSPI/HyperRAM mode. The HW connection is the same as on ST STM32H735 devkit. I found a driver for similar chip S70KL1281 but there are some differences, e.g. in latencies, but generally S70KL1282 is faster. The used driver file identification from header:******************************************************************************* @file s70kl1281.c* @modify MCD Application Team* @brief This file provides the S70KL1281 OSPI drivers....* Copyright (c) 2020 STMicroelectronics.******************************************************************************I configured the Hyperbus in STM32CubeMX but there are no hints how to setup all the options for this memory. So after some messing and trial-error I ended with this partially working init code:  static void MX_OCTOSPI2_Init(void) { OSPIM_CfgTypeD

Hello,We have interfaced a NOR flash (S26KL512SDABHN020) with STM32L562 over OctoSPI in Hyperbus mode. The Low level drivers were found from one of the forums of ST community and were ported in our code. We are unable to read/write data at the base address (0x90000000). We are also unsure about the offset to be provided in the below API. Should this offset be Sector/Page size ?OctoSPI configuration settings in Hyperbus mode are also provided below for your reference. Clock frequency for OctoSPI is set to 60MHz. (1) OctoSPI Initialization:static void MX_OCTOSPI1_Init(void){ /* USER CODE BEGIN OCTOSPI1_Init 0 */ /* USER CODE END OCTOSPI1_Init 0 */