STM32 MCUs Products

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Resolved! Enter low power run mode directly at boot

Hello community, I have this difficult task of powering an STM32G0B1 from a pin that was really not tasked for that (because the connector I have to plug onto provides no supply pin). In short, I can't draw more than 500µA current at any time or I ri...

WhatsApp Image 2025-01-28 à 11.17.07_4025050e.jpg
Kemsa by Associate II
  • 199 Views
  • 9 replies
  • 2 kudos

I2C communication between STM32L4R5 and esp32

I tried creating I2C connection between my stm32 board and esp32. I assume it is not working because of my code, due to the wiring being so simple in I2C communication, the pull up resistor is connected externally. Do you guys see any mistake in my c...

ejeee by Associate
  • 451 Views
  • 9 replies
  • 4 kudos

Resolved! STM32H745 input fast read

Hi, I have problem. I have idea: my STM32H745 must read GPIO state as quickly as possible. FCPU = ~400MHzI wrote the program in assembler for M7LED_ON()ldr r2, [r3, #IDR]ldr r2, [r3, #IDR]... ~650xLED_OFF()...only read, IDR, no write (no record yet)A...

EsKi by Associate II
  • 185 Views
  • 4 replies
  • 0 kudos

Resolved! STM32f411 crystal

Hi,I am new with stm32F411 mcu, and i have a question. if i want to use RTC features, do i need to add an external 32.768kHz xtal ?Thanks.

HL1 by Associate
  • 90 Views
  • 1 replies
  • 2 kudos

STM32WB55RG USART/LPUART unavailable?

Hello, I am trying to set up this is STM to connect it to another microcontroller via LPUART. To my understanding USART1 is unusable since it is connected to J-Link. I have attempted with LPUART setting up both PA3 and PA2 pins as the respective TX a...

Resolved! STM32H7R3. SMPS and VCORE.

HelloCan anybody explain how it is possible to power VCORE directly from SMPS output? I see that SMPS have only two possible output voltages, 1.8V and 2.5V:But VCORE accepts absolute maximum of 1.4V.So how it is possible with LDO bypassed?Best Regard...

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STM32F4 with an ADAFRUIT BLE SPI

Hello st community,I'm trying to set up a bleutooth communication between my phone and my stm32 with the Adafruit module in SPI communication, but I'm having a problem.When I use my arduino and the demo code it works perfectly but when I connect to m...

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Paulo971 by Associate III
  • 808 Views
  • 21 replies
  • 2 kudos