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Forum Posts

Boot STM32H7Rx using SPI?

Hi, I want to design a board using a STM32H7Rx device that has only one Octo-SPI. I need this Octo-SPI to connect to an on board FPGA, so I can not use it for booting. Therefore I have some questions:Can I boot from standard SPI? I do not need to run...

CJans.1 by Associate III
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  • 1 replies
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BOOT0 sampling timing

Posting mostly to record some data on a pretty data-free topic. How long after reset is released does the state of the BOOT0 pin get sampled? On the STM32F413 in particular, but it would be good to know how consistent the spec is. The official docs a...

24.png Screenshot 2025-10-09 at 3.19.23 pm.png 26.png
liteyear by Associate III
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  • 1 replies
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Resolved! RXP bit not being after SPI transfer

Hello all, I have been struggling with DMA transfers from SPI transactions and would love a second opinion on what I could be doing wrong. I have confirmed that polling works and I can corroborate the data I see in the RX registers with a scope. I do...

JCori by Associate II
  • 205 Views
  • 8 replies
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Both OCTOSPI ports memory mapped on STM32H7A3?

Hello,I am having trouble memory mapping both OSPI ports at the same time. Can I run a QSPI Flash on OSPI1 and a OSPI Hyperbus RAM on OSPI2 and have both be memory mapped or do both OSPI ports need to be running in the same mode to be memory mapped?T...

DWWelch by Associate III
  • 350 Views
  • 5 replies
  • 3 kudos