apb_write_read_sequence.sv

class apb_write_read_sequence extends uvm_sequence#(apb_transaction);
  `uvm_object_utils(apb_write_read_sequence)
  
   int last_addr;
  
  //constructor
  function new(string name = "apb_write_read_sequence");
    super.new(name);
  endfunction 
  
  virtual task body();
    apb_transaction write_trans;
    apb_transaction read_trans;
    
    //generate the write transaction 
    write_trans = apb_transaction::type_id::create("write_trans");
    write_trans.PSEL = 1;
    write_trans.PWRITE = 1;
    write_trans.PENABLE = 1;
    //write_trans.PADDR = $urandom_range(0,25);
    //write_trans.PWDATA = $urandom_range(5,50); 
    start_item(write_trans);
    assert(write_trans.randomize());
    last_addr = write_trans.PADDR;
  `uvm_info("WRITE SEQUENCE",$sformatf("Write Transaction Generated: PRESET =%0d, PSEL =%0d, PWRITE =%0d, PENABLE =%0d, ADDR =%0d, PWDATA =%0d ", write_trans.PRESET,write_trans.PSEL,write_trans.PWRITE,write_trans.PENABLE,write_trans.PADDR,write_trans.PWDATA),UVM_LOW)
    finish_item(write_trans);
    #5;

    //generate read transaction 
    read_trans = apb_transaction::type_id::create("read_trans");
    read_trans.PSEL = 1;
    read_trans.PWRITE = 0;
    read_trans.PENABLE = 1;
    read_trans.PADDR = last_addr;
    
    start_item(read_trans);
    `uvm_info("READ SEQUENCE",$sformatf("Read Transaction Generated: PRESET =%0d, PSEL =%0d, PWRITE =%0d, PENABLE =%0d, ADDR =%0d ", read_trans.PRESET,read_trans.PSEL,read_trans.PWRITE,read_trans.PENABLE,read_trans.PADDR),UVM_LOW)
    finish_item(read_trans);

  endtask
endclass