I have an ESP32S3 project that requires a high bandwidth between the MCU and an external device. The only feature blocking the use of micropython is its lack of support for ESP32's multi-line SPI (Quad and Octal). I looked over the SPI code in ports/esp32 and it looks pretty doable. I'm considering adding it and sending a PR. Before I do so, though, I'm wondering how I should expose it in a module. I think the most sensible thing would be to create a separate esp32.QSPI class (and perhaps an esp32.OctalSPI class).

I'd be interested in hearing what people think.

Thanks!