For the DPI library to be able to trigger the
axi_lite_wr and axi_lite_rd tasks, the DPI
library must be provided with the location of those tasks in the hierarchy of the
simulation. This is accomplished by calling a utility function named XilVitisNetP4DpiCreateEnv(). This function accepts a string
parameter that specifies the hierarchical path to the module that implements these
tasks. In the case of the example designs, this path is specified in:
/<proj_location>/vitis_net_p4_0_ex/vitis_net_p4_0_ex/imports/example_control.sv
as example_top.example_control