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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@jugglingcats
Hi @Gordon, a DMA option sounds good longer term. I read a little about it in the ESP32 docs. You're recommended to allocate the memory for the SPI transfers with
pvPortMallocCaps(size, MALLOC_CAP_DMA). It should automatically use DMA if it can.Where would I find equivalent info for the STM32 / Espruino? I'm keen to do a little hacking and would prefer to start with the Pico.
It occurs to me it would be dangerous to return from the flip method while the transfer is still happening, because then the app might start modifying the memory that's still being written.
Thanks