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STM32H7S7 PSRAM Configuration from "XSPI_PSRAM_MemoryMapped" Example

Nicklesworth
Visitor

A couple questions on using the PSRAM on the STM32H7S7 DK.

 

The "XSPI_PSRAM_MemoryMapped" example configures the XSPI module to have a max transfer length of 0, indicating continuous streaming without wrap can be used. However, the datasheet for APS256XNN only lists wrapping burst modes, no continuous streaming. Shouldn't the configuration be:

hxspi1.Init.MaxTran = 32;​

to match the default burst wrap of the part?

 

As an cleaner alternative to manual register writes, I tried using the "External Memory Manager" Middleware to correctly work with the on-board PSRAM. Is the APS256XNN PSRAM not supported by this middleware?

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