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Sleep
Associate II
May 29, 2021
Question

How to DMA transfer ADC value to D-cache of STM32H7?

Regarding the title, please show me the initialization code. I have a NUCLEO-H723 and a Discovery H735G-DK. Thank you.

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2 replies

Piranha
Principal III
May 29, 2021

STM32 is an MCU, not MPU.

L1 cache is internal to CPU core and is not accessible by DMA or any other peripheral. Also it cannot be operated directly by addresses even by user code. Read the AN4839 and AN4891.

Sleep
SleepAuthor
Associate II
May 29, 2021

Thank you. Is there an indirect method?