APB_VIP/apb_monitor.sv at main · Mujtabadar537/APB_VIP · GitHub

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class apb_monitor extends uvm_monitor;
  `uvm_component_utils(apb_monitor)

  function new(string name = "apb_monitor" , uvm_component parent = null);
    super.new(name , parent);
  endfunction

  virtual apb_interface vif;// virtual interface handle

  uvm_analysis_port #(apb_item) apb_mon_analysis_port;// analysis port for broadcasting packets

  apb_item pkt;

  function void build_phase(uvm_phase phase);
    super.build_phase(phase);

    pkt = apb_item::type_id::create("pkt");

    apb_mon_analysis_port = new("apb_mon_analysis_port" , this);

    if(!uvm_config_db#(virtual apb_interface)::get(this , "" , "apb_vif" , vif)) begin
      `uvm_error(get_type_name(), "Failed to get virtual interface");
    end
    else begin
      `uvm_info(get_type_name(), "Virtual interface recieved successfully", UVM_HIGH);
    end
  endfunction

  virtual task main_phase(uvm_phase phase);
    `uvm_info(get_type_name() , "Starting Main phase" , UVM_MEDIUM)
    forever begin
      sample_apb();
    end
    `uvm_info(get_type_name() , "Ending Main phase" , UVM_MEDIUM)
  endtask

  // sampling logic for APB
  task sample_apb();
    @(posedge vif.clk iff vif.resetn);
    if(vif.PSELx && vif.PENABLE && vif.PREADY) begin
    	pkt.PADDR = vif.PADDR;
  		pkt.PSELx = vif.PSELx;
  		pkt.PENABLE = vif.PENABLE;
  		pkt.PWRITE = vif.PWRITE;
  		pkt.PWDATA = vif.PWDATA;
  		pkt.PSTRB = vif.PSTRB;

  		pkt.PREADY = vif.PREADY;
  		pkt.PRDATA = vif.PRDATA;
  		pkt.PSLVERR = vif.PSLVERR;
        pkt.print_apb_mst("APB_MONITOR" , UVM_MEDIUM);
    	pkt.print_apb_slv("APB_MONITOR" , UVM_MEDIUM);
    	apb_mon_analysis_port.write(pkt);
    end
  endtask
endclass