Code Documentation (GHDL Side)

This documentation will help you to know about the code written for communication between server and Digital logic written in VHDL

Files generated automatically for GHDL side

modelname_tb.vhdl
Note: where modelname will be the name of your model

modelname_tb.vhdl

This is a testbench created to send and receive values from server and gives the input values to the digital design.
It uses VHPI library of VHDL, by including this library we can use functions written in C program, in VHDL.
In this test bench there are two processes used.
First process is used to initialize, listen server and sending the output to server.
Second process is used to giving inputs from server to digital design and taking the values to send through the server.

C functions used in modelname_tb.vhdl

Vhpi_Initialize

This function is used to create the port and initialize the server.

Vhpi_Listen

This function is used to start communication between client and server.

Vhpi_Send

This function is used to send the values to client.

Pack_String_To_Vhpi_String

As we are sending values along with there variable name, we are using this function which convert the vhdl string to VHPI string.

Vhpi_Get_Port_Value

This function takes input values from server, when Vhpi_Listen called, and give it to digital design.

Vhpi_Set_Port_Value

This function is used to takes output values from digital design and send it through server when Vhpi_Send called.