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Forum Posts

[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
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  • 3 replies
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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
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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
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How to implement the TIM_IRQHandler when using other classes

I'm trying to make a scheduler and everything seems to be ready, now the final step is add the proper function to the IRQ_Handler. This is where my problem starts. At default this uses a extern tim object from the main.c. I removed it there and put i...

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