STM32 MCUs Products

Ask questions, find answers, and share insights on STM32 products and their technical features.

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

About half-duplex communication (Rx frame size is 3)-2

Hello,Is it possible to perform half-duplex communication like the attached document? (I understand that the timing to switch to Rx is tricky.)The Rx frame size is 3 instead of 1.After changing to Rx, can I receive 3 bytes continuously as shown in th...

Connecting PWM output to input on the same board

Good day everyone,At the moment I'm trying to connect a PWM output pin to a PWM input pin on the same board. I'm using a dual core MCU, so both of them are on a different core.I set TIM4 to the M7 and TIM15 to the M4. I enabled the interrupt for TIM1...

0693W000008wfRGQAY.png 0693W000008wfRQQAY.png 0693W000008wfRaQAI.png 0693W000008wfRfQAI.png
Jvan .10 by Associate III
  • 556 Views
  • 2 replies
  • 0 kudos

[STM32H7] Why is there no spread spectrum functionality?

Hi,as there is apparently no more spread spectrum functionality in the STM32H7 to reduce EMI, is there some counterpart? I heard that the PLL fractional divider might be used for that purpose, but the amount of processor overhead to change the three ...

MaxMax by Associate II
  • 1486 Views
  • 3 replies
  • 0 kudos

Resolved! STM32H743-EVAL2, why battery-backed RAM doesn't hold data?

I start from any simple Cube example, such as UART_Printf,enable access to the backup RAM and write some data.After reset by the reset button or NVIC_System_Reset data in the backup RAM is retained.But after powering off the data is lost.Do I miss so...

Pavel A. by Super User
  • 1260 Views
  • 6 replies
  • 0 kudos

Resolved! Could anyone help me calculate TIM frequency?

Hello everyone,I'm using TIM3 on my Nucleo H745. If it's correct this TIM gets fed from the CPU clock, so it runs at 480MHz. That's what I thought at least.Using these settings;htim3.Init.Prescaler = 48000;htim3.Init.Period = 10000;To my calculations...

Jvan .10 by Associate III
  • 808 Views
  • 3 replies
  • 0 kudos