STM32 MCUs Boards and hardware tools

Hello!!! Is about VBAT pin of the STM32L4R5. I bounded this pin to the system VDD (3V3). When I run the program using the STM32CubeIDE+STLINK-V2 it seems to be OK. But, when I try to run alone, it seems to lost the reset entry point. What can I do?

STLink CLI utility can't program option bytes

Hi, I'm trying to use the STLink CLI to reprogram option bytes on an STM32L4 MCU. The command is accepted, but doesn't reprogram the designed option:'C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeProgrammer\bin\STM32_Programmer_CLI.exe' -c p...

Trouble connecting MPU-9250 breakout to STM32 Nucleo F411RE

Hi everyone,I'm really new to the whole concept of STM32, and I'm having trouble interfacing with my MPU-9250, which looks like: The Breakout board does not actually do much to the Invensense MPU-9250 chip, only provides some basic power regulation a...

What are the BOR levels for STM32G030 ?

Hello!When I connect to STM32G030 with the ST-Link programmer in the Options bytes tab, I can adjust the BOR levels (level 1-4 F and R). These levels are not described in the datasheet (DS12991 Rev 3). What are these levels and where can I find their...

Also, I heard "Pull-up resistors are not require because STM32F already have one." is that true? Please help me about it. I will be really appriciated.

 Hi everyone, I am confuse about I2C pull-up resistors. I use 4 I2C sensors. I am not sure is it true that pull-up resistors count. I use every sensors for pull-up resistors. If I use just one I2C port (I mean one port for all sensors) is it enough? 

STM32L073RZT6 hardly booting the firmware

Hello ST Community,I have a PCB designed according to the attached schematic.Recently, I have been struggling with the following awkward issues:1) The flashed firmware (via UART) doest not always start (2/10 attempts lead to successful code execution...

Short circuit on STM32H750

Hello!It's been a while since I'm working with STM32H7 MCUs and now, some of the products using it are returning from my customers, not working at all. Analyzing the board, I get a short circuit between 3V3 and GND and after removing the MCU, the sho...

How to measure power consumption of Nucleo-L010RB?

It says we can measure power consumption of mcu by putting a ammeter at JP6 in page 23(https://www.st.com/resource/en/user_manual/um1724-stm32-nucleo64-boards-mb1136-stmicroelectronics.pdf).​I write a program just detecting button, if button pressed ...