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My STM32U031R8T6U (CPU: UID=0x20353953_39365013_0030007C Lot#=59S96P Wafer#=19 X=48 Y=124 FLASH=64KB) has 0xFFFF under VREFINT_CAL_ADDR - the Vrefint calibration data are absent.C code:printf("\r\n *VREFINT_CAL_ADDR=%u", *VREFINT_CAL_ADDR);Output:*VREFINT_CAL_ADDR=65535This issue seems to be similar to the one described in:https://community.st.com/t5/stm32-mcus-products/stm32u073cc-vrefint-calibration-data-missing-value-wrong/m-p/716948#M259968but hasn't been mentioned in the STM32U031 Errata Sheets.    

I am using NUCLEO-U031R8 board and MCU is STM32UO31R8while reding reference voltage by using below code #define VREFINT_CAL_ADDR ((uint16_t*) (0x1FFF6EA4UL)) ADC1_COMMON->CCR |= ADC_CCR_VREFEN; uint16_t Internal_voltage_reference = (uint16_t)*VREFINT_CAL_ADDR; I am always getting 0xFFFF what could be the issue?Code formatting applied - please see How to insert source code for future reference.

Hi guys,Can someone explain to me why there is no ESD protection for this circuit?Or is it not necessary?Thank you

We had been evaluating with STM32U5G9J-DK2 board and have generated GUI code. We do not use Video or JPEG. For our production board we are using STM32U599VJ MCU which does not have JPEG module. So I am stuck with this code that has JPEG DMA usage. How do I tell touch GFX not to use JPEG peripheral and generate code for STM32U599VJ MCU? ThanksSansh

Good morning,I am using an STM32G4 Nucleo-32 board (MB1430) and want to drive Relays with its GPIO; I need to know the maximum current that can give a GPIO. I searched on the datasheet of the STM32G431x6 , the maximum power that can be delivered, but found no values. Could someone tell me where to find that info?

Having issues generating random numbers while being connected via BLE.In general use, HAL RNG works fine, and I get a random number without timeouts.BUT,Upon finishing the connection flow,connection mtu exchange pairing ,I start to get timeouts when trying to generate a new random number.Increasing the timeout , initializing,  did not resolve the issue.I am currently trying to use HCI_RND command instead in the hopes it will get me my random number.If it helps, I am on one of the latest BLE stacks 1.20 or 1.21Cheers,and let us all have random numbers when connected!

I'm trying to graft an SD card onto the U5G round display development board.  CN9 brings out all of the control and data lines for SDMMC2.The problem that I am seeing is that the SD device will not initialize (MX_SDMMC2_Init) due to a timeout in HAL_SD_Init -> HAL_SD_InitCard -> SD_powerON -> SDMMC_CmdGoIdleStateCurrently I have VCC to the card plugged into 3V3, ground, clock, and 47K pull-ups to VCC on CMD and the 4 data lines.I've tried using level shifters to use the 1V8 signalling on the processor side and 3V3 signalling on the SD card side, 4-bit SD, 4-bit SDIO, 1-bit SD, and 1-bit SD with the signals simply pulled up to 3V3. All give the same result, timeout on Go-Idle-State.The card is formatted and works properly on a PC. I've got test programs on a F479 Discovery board working with SD cards under FileX, and I tried making the hookup as close as possible to a U575 EV or the 429 Disco, but this U5 is not cooperating.Given that this board uses 1V8 levels and SD card

Hello everyone,Based on the screenshots attached, I couldn't understand the formula obtained for the OCP feature of this inverter board.3 phase currents are read through the shunt resistors, got offset, and amplified by the op-amp ICs. So far so good!But PC1, PC2, and PC3 are tied together using 3 one kilo ohm resistors, then the common node is fed to the comparator pin of the MCU to do the OCP task.I am wondering how the Equation 2 is obtained for implementing over current protection, and why it is like this. Why is the G.Rs.Ioc term divided by 3? If you could guide me, it'd be awesome, thanks. 

How to set the gain of GAIN0/GAIN1 pins 30/31 of TDA7491HV?  

I am working on a project with the STM32G0 series microcontroller. There is a requirement in my project to identify a BOR (Brown-Out Reset) independently. In the previous version of the project, we used the STM32L4 series, where there is a reset flag bit (BORRSTF) in the RCC_CSR register to specifically identify the occurrence of a BOR.In the STM32G0 series, there is a reset flag bit (PWRRSTF) available in the RCC_CSR register to indicate a power-related reset, which can be due to a BOR, POR (Power-On Reset), or PDR (Power-Down Reset). However, there is no dedicated reset flag for identifying a BOR alone.Is there any other method available in the STM32G0 series to specifically identify a BOR? 

Hello everyone, I am currently using a 64-bit Windows 7 operating system and I am interested in using STM32CubeIDE for my development projects. Before proceeding with the installation, I would like to confirm whether STM32CubeIDE supports a 64-bit Windows 7 operating system. Could anyone please provide information or share their experiences regarding the compatibility of STM32CubeIDE with a 64-bit Windows 7 OS? Thank you in advance for your assistance!Best regards

Currently, I'm running the M4 core by loading it through the A7 core.Is there any way to make these two cores start independently, without interfering with each other, and only perform communication?

 MacOS 15.3.1.  CubeIDE 1.18.0. Firmware STM32Cube FW_U5 V1.7.0.I  was tracking down an issue with SD cards on SDMMC2 on an STM32U5G9N not wanting to start.I found that HAL_SD_MspInit calls:__HAL_RCC_SDMMC1_CLK_ENABLE();instead of:__HAL_RCC_SDMMC2_CLK_ENABLE(); 

Hello,i have a question concerning the SD-Card functionality and the licensee fee of the SDMMC implementation of the STM32H723ZG.My goal is to log some data on the card. According to the documentation, the FatFs-Filesystem can be used under a BSD-style license. How About the SDMMC Protocol? The SD Association states that a licensee fee must be paid if you plan to develop a host device. Has this fee already been paid with the purchase of the STM32?  

Hello,According to the documentation, the FatFs-Filesystem can be used under a BSD-style license. How About the exFAT licence fee. Has this fee already been paid with the purchase of the STM32?

Hi,I have a component (TVS diode I think) with marking MEPY Z805. Please see the attached image.Anyone can help me to get the P.N.?Thanks in advanceBest RegardsJonata

STM32CubeG0 git repository points to temporary branch in submodules.Here the repository cbtl08gp053 is on tag v1.0.1 which is not part of main branch. 

Hi community,I'm encountering a "network connection failed" error in my Cube IDE. Despite reinstalling the IDE multiple times, the issue persists. As a result, I'm unable to generate the code. Any suggestions on how to resolve this?

Hi there,There are a few projects where having a 16bit DAC instead of a 12bit DAC would be extremely useful.I am currently using the G4 series as analog synthesizer controllers and it would be fantastic to be able to use the 1MHz DAC as a 16bit audio output. I am using the 12bit DAC right now and it's actually surprisingly good when used carefully as an audio output, even when manually multiplexed externally. Having more precision here would be very useful.Are there any such plans?Thanks.

Can I use "STM32 ST-Link Utility" or "STM32CubeProgrammer" to program STM8MCU flash?If using "STVP", can it automatically detect the STM8MCU type? or require to configure "STVP" for the MCU type to be programmed.

Hello All, I am trying to use STM32H757I-Eval board for one of Development project and need to get one clarification regarding it.I am using Touch GFX Designer Version- 4.24.2, while creating a new project I can see STM32H747l Eval for Board Setup in Touch GFX, but not STM32H757I-Eval. Though I can run the sample code on STM32H757I-Eval  using STM32H747l Eval base setup, Will this cause any major problem in my future development, or I can use STM32H747l for any  STM32H7 Series Eval Board ? BR 

Hello Everybody, MCSDK:6.3.0 CubeMX: 6.3.0 Workbench : 6.3.0 Motor Pilot : 1.2.9 Power Board : IHM08M1(Rshunt=0.01Ω) Control Board : NUCLEO-G431RB Motor : BLDC 26w 24v/8 pole pairs / rpm=4k / rated current=1.8A/hall sensor   I would like to ask, in SPEED MODE under SMO + PLL, which API can be used to limit the Iq current? For example, if the rated motor current is 2A and the peak current is 6A,I want to limit the motor's current to not exceed 1.8A during normal operation. Which API or parameter should I use to enforce this current limit?Or is there no callable API, and I need to write my own condition checks?But since I am in SPEED MODE, is it still possible to impose a current limit? Thank you in advance to any expert who replies to my question  

Hi,  I followed the steps to install the Model Zoo, giving all attention to the Proxy settings. there is no chance i was able to install the requitements. issues with proxy.  Are the username and password in those settings should be my developer account? if yes what is the proxy address to continue? and the port?  if this is not the case, I am not behind a proxy and this should work. any idea could be wrong?  I tried the Miniconda, the anaconda shell, Windows power shell, Cmd, no luck.  Please advise!   Thank you.

Posted on October 17, 2017 at 12:08When using CubeMX, with STM32L476, for setting LSE drive capability other than 'Low Drive' the setting will not be implemented. This is due to the fact that the write access using bit DBP in PWR->CR1 is not set prior to setting RCC->BDCR value.The code generated in SystemClock_Config is:void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInit;/**Configure LSE Drive Capability */ __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);/**Initializes the CPU, AHB and APB busses clocks */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI; RCC_OscInitStruct.LSEState = RCC_LSE_ON; RCC_OscInitStruct.MSIState = RCC_MSI_ON;....}where HAL_PWR_EnableBkUpAccess must be executed prior to __HAL_RCC_LSEDRIVE_CONFIG#cubemx #lse

Hello,I’m trying to create a simple program to test BLE functionality of my board. The board does not have HSE but it has LSE. I'm not sure if that is a problem. I'm using PlatformIO for the programming, configurations and building/flashing. When I upload the program to board it goes to infinite loop on if (!BLE.begin()) { while (1); } more specific on __WEAK void shci_cmd_resp_wait(uint32_t timeout) { for (unsigned long start = millis(); (millis() - start) < timeout;) { if (CmdRspStatusFlag == SHCI_TL_CMD_RESP_RELEASE) // <---- looping here { break; } } return; } This could be result of multiple reasons. Some things I have tested are:1. Use STM32CubeProgrammer to flash stm32wb5x_FUS_fw.bin to address 0x080EC000 stm32wb5x_BLE_HCILayer_fw.bin to address 0x080E0000and set application code target address to 0x08000000as per release notesCubeProgrammer is able to read FUS infos and also start wireless stack2. Generate linker scri