How to poll for a DUT register field for 1 so that i can call my task

UVM
,
1

Hi. I have 2 DUT registers(R1,R2) of 16 bit size. If 16th bit of r1 is high then i should read from R2

I have written a task as below


virtual task poll();
  read_the_register(R1,r1_data); //assume the task that reads from DUT register
  if(r1_data[15]) begin
    read_the_register(R2,r2_data);
  end
  else begin
    while(~r1_data[15]) begin
      read_the_register(R1,r1_data);
      if(r1_data[15]) begin
        read_the_register(R2,r2_data);
        return;
      end
    end
  end
endtask

The above task is working good but its hanging sometimes. could you please help me in this context

2

Hi Prashanth,

Please try the below lines of code in your sequence.

virtual task body();
   bit temp;
   while (temp != 1)
     begin
       // --- Reading the Register 1 --- //
       `uvm_do(req,{req.<register1_address> = <value>;
                    req.<write_signal>      = <value>;});
       get_response(req);
       req.print();
       // --- Driver will send the information from DUT to Sequence --- //
       temp = req.<register1_data>[15];
     end
   // --- Then Reading the Register 2 --- //
   `uvm_do(req,{req.<register2_address> = <value>;
                req.<write_signal>      = <value>;});
    get_response(req);
    req.print();
endtask : body

Thanks,
Furry_Panda