The SPI routines in the ESP32 Arduino port both work just fine ... there is a lot of work for the community to do in getting it up to speed. Suppose that you need to drive a lot of servos ...
[Lewin] wrote in to tell us about a high speed library for Arduino Due ... graphic display , are interfaced with an Arduino board via the SPI or I2C bus. The Adafruit_SSD1306 library written ...
The Arasan High-Speed SPI - AHB IP Core provides a high-speed data communication channel between the AHB and SPI buses. The SPI - AHB bridge enables an AHB host to access a serial device at high speed ...