using uvm_config_db::get inside a module

[assafgedalia]

Hi,

 

can i use uvm_config_db::get function from inside a module?

i want to create a configuration object in the test, set it at the config_db and get it in a VIP written as a module.

something like this:

 

module vip();

initial begin

    // Wait for first clock - this means we are in the main phase

    @(posedge if.clk);

 

    if (!uvm_config_db#(vip_config)::get(null, "uvm_test_top","cfg", cfg)) begin

        `uvm_fatal("CFGERR", "%m vip cfg not set")

    end

    ...

end

endmodule

 

i tried this and got the fatal error, meaning the cfg wasn't found.

 

i tried instead to create a typedef struct and pass it from the test to the module using set and get but the simulation crashed - "--- Stack trace follows".

 

Any help would be much appreciated.

 

Thx,

Assaf

[uwes]

hi,

 

of course you can use the config_db from within a module. if the element cannot be found it means

 

- it has never been put into the config_db (code not executed, module missing, set-after-get or similar)

- the combination of scope,path,field,type during ::get doesn't match the one used during ::set

 

switch on +UVM_CONFIG_DB_TRACE and see what is being stored and retrieved 

 

/uwe