How to start task (it is in sequence ) from testcase.? how to solve uvm_fatal (neither the item's sequencer nor dedicated sequencer has been supplied to start item in wr_seq)

UVM
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7

In reply to Rao.Bee:

You can add tasks to your sequence which can be called from the test to accomplish what you want to do. The only additional requirement is that you pass a sequencer to your task so that it knows where to run.


class abc extends uvm_sequence #(pkt)
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  task write(bit [15:0] addr, bit [15:0] data, uvm_sequencer sqr);
    req = pkt::type_id::create("pkt");
    start_item(req, -1, sqr);
    req.m_hwrite = 1;
    req.m_hburst = SINGLE;
    req.m_haddr = addr;
    req.m_hwdata == data;
    finish_item(req);
  endtask
endclass

class base_test extends uvm_test;
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task run_phase(uvm_phase phase);
		abc wr_seq;		// single register write, read
		super.run_phase(phase);
		wr_seq = abc::type_id::create("wr_seq");
		phase.raise_objection(this);
                wr_seq.write(16'hEA,16'hAABB,env.ahb_env.m_st1_ahb_agent.m_st1_sqr);
                phase.drop_objection(this);
 
endtask
endclass