Femtobeacon ESP32: testing the SPI

Hi all,
anyone with experience with Femtobeacon ESP32?

I need to send data through the SPI. Is the implementation of the SPI just a simple SPI interface where I send the data on the MOSI or MISO, depending on my application?

If you want to use the ESP32 SPI API you might be interested in SPI Master Driver - ESP32 - — ESP-IDF Programming Guide latest documentation