A video showing how to use the library over I2C in Python on the Raspberry Pi is available here: A video showing how to use the library over UART with the Serial Wombat 18AB chip is available here: ...
The FT4232H and FT232H methods use the MPSSE Interface of the devices to communicate over SPI to the BT82x. The FT4222H Interface has built-in SPI hardware and controller. The D2XX method sends ...