Difference between revisions of "Simple port modification"

Revision as of 14:59, 11 October 2024

This example converts module with struct ports into flat ports.

from invio import *

set_preference("invio_insert_ports_with_newline", 1)
add_sv_file("test.sv")
analyze()
elaborate("top")

# Convert top module with struct ports into flat ports 
top_module_obj = get_modules("top").first
for p in get_ports(top_module_obj):
    #report_attributes(p) # for debugging purposes you can print the attributes and see what is going on
    p_type = p.data_type
    # Filter the user type ports
    if (p_type.is_named_user_type):
        # Create new ports for each memeber and add them to the module
        for m in p_type.members:
            dims = []
            for d in m.dimensions:
                dims.append( (d.left_index, d.right_index) )
            # Create a port with the same attributes as struct memebers
            new_port = create_port(m.base_name, p.direction, datatype_name=m.data_type_name, dimensions=dims);
            # Insert them into top module
            insert_into(new_port, top_module_obj)

        # Delete the old struct port
        delete_object(p)

# Write out the modifications
write_modified_file("test.sv", "test_mod.sv")
 

"test.sv"

typedef struct {
    logic clk;
    logic rst;
    logic [1:0] addr;
    int data;
} bus_t;


// Convert the struct port into flat ports
module top #(WIDTH = 4)(
   input bus_t in_bus, // this one
   output [0:WIDTH-1] d,
   input [0:WIDTH-1] a
) ;

endmodule
 

Testcase after modification, "test_mod.sv":

typedef struct {
    logic clk;
    logic rst;
    logic [1:0] addr;
    int data;
} bus_t;


// Convert the struct port into flat ports
module top #(WIDTH = 4)(
   output [0:WIDTH-1] d,
   input [0:WIDTH-1] a,
input logic clk,
input logic rst,
input logic [1:0] addr,
input int data
) ;

endmodule