How to use uvm_config_db method to get object/int values from TB?

[hugemx830202]

Hi,

I defined an integer in TB env(tb_env) called 'test', and in my sequence, I call assert(uvm_config_db#(int)::exists(uvm_top, "tb_env", "test", 1)); to check whether the sequence can obtain 'test' value, but assert failed. I just used `uvm_field_int(test, UVM_ALL_ON) to register to the factory. Could you help? Thanks a lot!

BR

Mike

[janick]

Your environment should not look upward in to the configuration DB, only downward. Otherwise you are breaking the encpasulation principle.

Instead you should use the uvm_resource_db#(int) and store an int under a known name.

[uwes]

hi,

adding to janick's comments. its not that this style breaks encapsulation its also prevents a proper configuration override. so you should make a local field "test" and make an appropriate set_config or ::set from test/env/agent or similar. (keep in mind that there could be more than a single set-config)