I plan to use TWR-K60F120M demo tower system to develop my SPI code. I have checked TWR-K60F120 User's Manual and its schematics. It seems SPI2 port is connected to one of TWRPI connectors. I have also checked MQX example code. It access an external flash memory through SPI2. Could anybody tell me which TWRPI card I should have? Or any other suggestion about SPI program development with this demo system? Thanks!