overriding a registered local variable in a sequence from test

[sathyakiran.p]

Following is the example

 

class my_sequence extends uvm_sequence...

 

string file_name;

`uvm_object_utils_begin(mysequence)

`uvm_field_string(file_name,UVM_DEFAULT)

`uvm_object_utils_end

 

endclass

 

 

class basic_test extends from uvm_test

 

function build_phase(..)

set_config_string("*", "file_name", abc.txt);

endfunction

 

endclass..

 

 

I am passing file_name(abc.txt) from test with set_config_string, but, it is not taking effect.

 

I did the same thing in driver. it worked well. does UVM supports, overriding local variables in sequence.

 

Please let me know...

 

Thanks,

Satya

[David Black]

Sequences are uvm_object's; whereas, the driver is a uvm_component. The field automation macros automatic configuration fetching works due to super.build_phase automation. You will need to do two things:

 

1. Add the following in your sequence: 

   `declare_p_sequencer(SEQR_TYPE)

2. In function pre_start add: 

   uvm_config_db#(string)::get(p_sequencer,"","file_name",file_name);

Notice that the information is tied to the sequencer that the sequence is running on.

[sathyakiran.p]

Thanks alot david. It is working fine.. one small correction `declare_p_sequencer(SEQR_TYPE) => `uvm_declare_p_sequencer(SEQR_TYPE), SEQR_TYPE is sequencer name.

 

Regards,

Satya