Accessing test's properties from top_module

UVM
,
1

Hi all ,

For some reason I want to access/change the test’s ( Run from Command Line OR run_test Argument ) properties .



module top_module();
  
    class t1 extends uvm_component;
      `uvm_component_utils(t1)
      uvm_blocking_put_imp #(int,t1) a1;
       int BB ; // Want to Change this from top_module
    
    function new(string name = "test",uvm_component parent = null);
      super.new(name,parent);
    endfunction
    
    function void build_phase(uvm_phase phase);
      super.build_phase(phase);
      a1 = new("aa1",this);  
    endfunction
    
    function void connect_phase(uvm_phase phase);
      super.connect_phase(phase);
    endfunction
       
  endclass

   class t12 extends uvm_component;
      `uvm_component_utils(t12)
      uvm_blocking_put_imp #(int,t12) a12;
       int BB ; // Want to Change this from top_module
    
    function new(string name = "test",uvm_component parent = null);
      super.new(name,parent);
    endfunction
    
    function void build_phase(uvm_phase phase);
      super.build_phase(phase);
      a1 = new("aa1",this);  
    endfunction
    
    function void connect_phase(uvm_phase phase);
      super.connect_phase(phase);
    endfunction
       
  endclass

  class Default_test extends uvm_test;
    `uvm_component_utils(Default_test)
    
    t1  t;  
    t12 r; 
    uvm_blocking_put_port #(int) a;
    
    function new(string name = "Default_test",uvm_component parent = null); // Argument Names will be Overridden during create() 
      super.new(name,parent);
    endfunction
    
    function void build_phase(uvm_phase phase);
      super.build_phase(phase);
      
      t  =  t1::type_id::create("t",this);   // Change names to "a" , "aa"
      r  = t12::type_id::create("r",this);
      a  = new("a",this,1,2);                
      
    endfunction
     
    function void connect_phase(uvm_phase phase);
      //super.connect_phase(phase);
      
      a.connect(t.a1);  // Make Both Connections
      a.connect(r.a12); // Make Both Connections
    endfunction


        task run_phase(uvm_phase phase);
           #2 ;
     
        endtask
    
  endclass
   
  initial begin

    fork 
      run_test("Default_test");
      begin
            #1 ;
            uvm_pkg::uvm_top.top_levels[0].t.BB = 10; // Gives an Error on 't'

       end
      join
    end
 endmodule

Any Suggestions ?

2

In reply to himanshu valecha:

top_levels is an array of umm_components. You need to $cast top_levels[0] to a variable to a Default_test class variable before you can reference t.

3

In reply to dave_59:

Hi Dave ,

I modified the code as follows but I still get an Error .



 Default_test Test ;

  initial
   begin:RUNN // Will this contribute in %m
    fork 
      run_test("Default_test");
       begin 
       #1 ;
       $cast(Test,uvm_pkg::uvm_top.top_levels[0]);
       Test.t.BB = 10; // Error :: Could not find field/method name (t) in 'Test' of 'Test.t.BB'.
       
        end
    join
  end
4

In reply to himanshu valecha:

The code you posted has a number of other problems. Please edit your post ro correct them before tacking this issue.