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aabba.1
aabba.1
Associate III
November 10, 2022
Question

Changing duty cycle via DMA

  • November 10, 2022
  • 1 reply
  • 592 views

Hi,

I want to send via DMA different duty cycle to my TIM12 (I am trying to turn on a rgb led strip by using the method TIM+DMA ), but with CubeMx TIM12 don't have access to any DMA, any idea how I can reproduce?

I am using STM32H7B3 and can't change the pin (this pin don't have other TIM, other TIM have DMA)

Thank you

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1 reply

waclawek.jan
waclawek.jan
Super User
November 10, 2022

TIM12_TRGO is trigger input to DMAMUX1, so you can use the DMAMUX request generator to generate a DMA request to transfer new value into TIM12_CCRx.

Maybe this is not something you can click in CubeMX, I don't use Cube/CubeMX. Read the DMAMUX chapter in RM.

JW

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