You require three pieces of code to use an AI Engine:
Kernel code: C/C++ code that runs on the AI engine.
ADF graph code: C++ code that describes how the kernel communicates with the outside world. This code sets the connections in the AXI-S interconnect on the AIE tile.
Testbench/Control code: C/C++ code to load, initialize, run and terminate kernel code. In a practical application, this runs on an APU (application processing unit) in the processing system.