Can the DMA memory generated by the DAC be accessed/read?

Can the memory generated by DMA be accessed and used as data? And how?

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mƎALLEmBest answer

ST Technical Moderator

Hello @macam1 ,

If you mean data transfer from memory to DAC with DMA, yes it's possible.

You didn't mention the exact STM32F4 part number.

This is for STM32F4x7 using DMA1:

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mƎALLEmBest answer

ST Technical Moderator

Hello @macam1 ,

If you mean data transfer from memory to DAC with DMA, yes it's possible.

You didn't mention the exact STM32F4 part number.

This is for STM32F4x7 using DMA1:

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

Associate III

thank you for your response, yes using stm32f405. can you give an explanation about this dma memory access, I'm so blind.

ST Technical Moderator

What explanation you need?

You need to configure DMA and DAC especially to choose the correct DMA stream and DMA channel (see the figure I shared above).

Please refer to this example. It's using DMA and DAC for signal generation:

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.

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