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I have my OCTOSPI1 as QSPI working - in "indirect mode", now using DMA: it generates a very clean waveform (no gaps between words or bytes as in "polling mode", a smooth waveform).I use also OCTOSPI1 as a "regular SPI transmitter" (acting as SPI Tx)....
I use Portenta H7 MCU module. I use it with a STM32CubeIDE project (not Arduino).I do not like the Arduino IDE - LOL, I am missing several features, esp. not possible to use a HW debugger and to step through my code, no support for HW breakpoints etc...
If you need an example, how to use PDM microphones (MICs) on STM32 MCU and how to bring the voice/sound via network to a host computer (PC) - here is my project:https://github.com/tjaekel/PortentaH7_VFR_CubeIDE Here is a YouTube video with a demonstr...
My question might sound "strange" for HW experts.My STM32U5A5 MCU has DCache (16KByte). Datasheet says: used when external memory is connected (e.g. NAND/NOR flash, OCTOSPI).DCache is not used for internal memory (when running from MCU flash or inter...
STM says: OCTOSPI can generate a "regular SPI" transaction. But is not true:A "regular SPI transaction" means actually on OCTOSPI: a half-duplex SPI transaction (using just IO0, but for both directions).I you want to generate a "regular" SPI transact...