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//-----------------------------------------------------------------------------

//

//                             UART2BUS VERIFICATION

//

//-----------------------------------------------------------------------------

// CREATOR    : HANY SALAH

// PROJECT    : UART2BUS UVM TEST BENCH

// UNIT       : SEQUENCE

//-----------------------------------------------------------------------------

// TITLE      : UART Sequence

// DESCRIPTION: This

//-----------------------------------------------------------------------------

// LOG DETAILS

//-------------

// VERSION      NAME        DATE        DESCRIPTION

//    1       HANY SALAH    01012016    FILE CREATION

//    2       HANY SALAH    02012016    ADD REST OF TESTS

//-----------------------------------------------------------------------------

// ALL COPYRIGHTS ARE RESERVED FOR THE PRODUCER ONLY .THIS FILE IS PRODUCED FOR

// OPENCORES MEMBERS ONLY AND IT IS PROHIBTED TO USE THIS MATERIAL WITHOUT THE

// CREATOR'S PERMISSION

//-----------------------------------------------------------------------------

// Base Sequence Class that hold the common attributes to all sequences

class uart_base_sequence extends uvm_sequence #(uart_transaction);

  uart_transaction    trans;

  `uvm_object_utils(uart_base_sequence)

  function new (string name = "uart_base_sequence");

    super.new(name);

    trans = uart_transaction::type_id::create("trans");

  endfunction:new

endclass:uart_base_sequence

//-------------------------------------------------------

//

//      WRITE IN TEXT MODE

//

//-------------------------------------------------------

  // 1.1 Apply UART write request using capital W

  class seq_1p1 extends uart_base_sequence;

    `uvm_object_utils(seq_1p1)

    function new (string name = "seq_1p1");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

        _chartype   == cap;

      };

      finish_item(trans);

    endtask:body

  endclass:seq_1p1

  // 1.2 Apply UART write request using small w

  class seq_1p2 extends uart_base_sequence;

    `uvm_object_utils(seq_1p2)

    function new (string name = "seq_1p2");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

        _chartype   == smal;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_1p2

  // 1.3 Apply UART write request using single space only

  class seq_1p3 extends uart_base_sequence;

    `uvm_object_utils(seq_1p3)

    function new (string name = "seq_1p3");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 == single;

        _spacetype2 == single;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_1p3

  // 1.4 Apply UART write request using tab only.

  class seq_1p4 extends uart_base_sequence;

    `uvm_object_utils(seq_1p4)

    function new (string name = "seq_1p4");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 == tab;

        _spacetype2 == tab;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_1p4

  // 1.5 Apply UART write request using both single space and tab.

  class seq_1p5 extends uart_base_sequence;

    `uvm_object_utils(seq_1p5)

    function new (string name = "seq_1p5");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        _spacetype2 != _spacetype1;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_1p5

  // 1.6 Apply UART write request using one wrong space.

  class seq_1p6 extends uart_base_sequence;

    `uvm_object_utils(seq_1p6)

    function new (string name = "seq_1p6");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        (_spacetype1 == wrong_space) -> (_spacetype2 inside {tab, single});

        (_spacetype1 != wrong_space) -> (_spacetype2 == wrong_space);

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

      };

      finish_item(trans);

    endtask:body

  endclass:seq_1p6

  // 1.7 Apply UART write request using two wrong spaces

  class seq_1p7 extends uart_base_sequence;

    `uvm_object_utils(seq_1p7)

    function new (string name = "seq_1p7");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 == wrong_space;

        _spacetype2 == wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _reqinc     == no;

        _arbit      == accept;

      };

      finish_item(trans);

    endtask:body

  endclass:seq_1p7

  // 1.8 Apply UART write request to address 0

  class seq_1p8 extends uart_base_sequence;

    `uvm_object_utils(seq_1p8)

    function new (string name = "seq_1p8");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        address     == 16'b0;

        _reqinc     == no;

        _arbit      == accept;

      };

      finish_item(trans);

    endtask:body

  endclass:seq_1p8

  // 1.9 Apply UART write request to full range address

  class seq_1p9 extends uart_base_sequence;

    `uvm_object_utils(seq_1p9)

    function new (string name = "seq_1p9");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        address     == 4'hFFFF;

        _reqinc     == no;

        _arbit      == accept;

      };

      finish_item(trans);

    endtask:body

  endclass:seq_1p9

  // 1.10 Apply UART write request with data equal 0.

  class seq_1p10 extends uart_base_sequence;

    `uvm_object_utils(seq_1p10)

    function new (string name = "seq_1p10");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _data [0]   == 8'b0;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_1p10

  // 1.11 Apply UART write request with full range data.

  class seq_1p11 extends uart_base_sequence;

    `uvm_object_utils(seq_1p11)

    function new (string name = "seq_1p11");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == write;

        _data [0]   == 2'hff;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_1p11

//-------------------------------------------------------

//

//      READ IN TEXT MODE

//

//-------------------------------------------------------

  // 2.1 Apply UART read request using capital R

  class seq_2p1 extends uart_base_sequence;

    `uvm_object_utils(seq_2p1)

    function new (string name = "seq_2p1");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

        _chartype   == cap;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p1

  // 2.2 Apply UART read request using small r

  class seq_2p2 extends uart_base_sequence;

    `uvm_object_utils(seq_2p2)

    function new (string name = "seq_2p2");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

        _chartype   == smal;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p2

  // 2.3 Apply UART read request using single space only

  class seq_2p3 extends uart_base_sequence;

    `uvm_object_utils(seq_2p3)

    function new (string name = "seq_2p3");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 == single;

        _spacetype2 == single;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p3

  // 2.4 Apply UART read request using tab only.

  class seq_2p4 extends uart_base_sequence;

    `uvm_object_utils(seq_2p4)

    function new (string name = "seq_2p4");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 == tab;

        _spacetype2 == tab;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p4

  // 2.5 Apply UART read request using both single space and tab.

  class seq_2p5 extends uart_base_sequence;

    `uvm_object_utils(seq_2p5)

    function new (string name = "seq_2p5");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        _spacetype2 != _spacetype1;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p5

  // 2.6 Apply UART read request using one wrong space.

  class seq_2p6 extends uart_base_sequence;

    `uvm_object_utils(seq_2p6)

    function new (string name = "seq_2p6");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        (_spacetype1 == wrong_space) -> (_spacetype2 inside {tab, single});

        (_spacetype1 != wrong_space) -> (_spacetype2 == wrong_space);

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p6

  // 2.7 Apply UART read request using two wrong spaces

  class seq_2p7 extends uart_base_sequence;

    `uvm_object_utils(seq_2p7)

    function new (string name = "seq_2p7");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 == wrong_space;

        _spacetype2 == wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p7

  // 2.8 Apply UART read request to address 0

  class seq_2p8 extends uart_base_sequence;

    `uvm_object_utils(seq_2p8)

    function new (string name = "seq_2p8");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        address     == 16'b0;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p8

  // 2.9 Apply UART read request to full range address

  class seq_2p9 extends uart_base_sequence;

    `uvm_object_utils(seq_2p9)

    function new (string name = "seq_2p9");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        address     == 4'hFFFF;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p9

  // 2.10 Apply UART read request with data equal 0.

  class seq_2p10 extends uart_base_sequence;

    `uvm_object_utils(seq_2p10)

    function new (string name = "seq_2p10");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _data [0]   == 8'b0;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p10

  // 2.11 Apply UART read request with full range data.

  class seq_2p11 extends uart_base_sequence;

    `uvm_object_utils(seq_2p11)

    function new (string name = "seq_2p11");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == text;

        _spacetype1 != wrong_space;

        _spacetype2 != wrong_space;

        length_data == 1;

        _eoltype    != wrong_eol;

        _command    == read;

        _data [0]   == 2'hff;

        _reqinc     == no;

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_2p11

//-------------------------------------------------------

//

//      NOP IN COMMAND MODE

//

//-------------------------------------------------------

  // 3.1 Apply UART NOP command with acknowledge request and right command

  //     mode prefix

  class seq_3p1 extends uart_base_sequence;

    `uvm_object_utils(seq_3p1)

    function new (string name = "seq_3p1");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == binary;

        _command    == nop;

        (length_data > 1) -> (_reqinc == yes);

        _arbit      == accept;

        _reqack     == yes;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_3p1

  // 3.2 Apply UART NOP command with acknowledge request and wrong command

  //     mode prefix

  class seq_3p2 extends uart_base_sequence;

    `uvm_object_utils(seq_3p2)

    function new (string name = "seq_3p2");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == wrong_mode;

        _command    == nop;

        address[15:7] != 2'h00;

        (length_data > 1) -> (_reqinc == yes);

        _arbit      == accept;

        _reqack     == yes;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_3p2

  // 3.3 Apply several UART NOP command to different locations with different

  //     data lengths

  class seq_3p3 extends uart_base_sequence;

    rand int unsigned num_of_comands;

    `uvm_object_utils(seq_3p3)

    function new (string name = "seq_3p3");

      super.new(name);

    endfunction:new

    constraint num_iter {

      num_of_comands inside {[1:5]};

    }

    virtual task body ();

      randomize();

      start_item(trans);

      repeat (num_of_comands)

        begin

        trans.randomize() with {

          _mode       == binary;

          _command    == nop;

          (length_data > 1) -> (_reqinc == yes);

          _arbit      == accept;

          _reqack     == yes;

        } ;

        end

      finish_item(trans);

    endtask:body

  endclass:seq_3p3

  // 4.1 Apply UART NOP command with non-acknowledge request and right command

  //     mode prefix

  class seq_4p1 extends uart_base_sequence;

    `uvm_object_utils(seq_4p1)

    function new (string name = "seq_4p1");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == binary;

        _command    == nop;

        (length_data > 1) -> (_reqinc == yes);

        _arbit      == accept;

        _reqack     == no;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_4p1

  // 4.2 Apply UART NOP command with non-acknowledge request and wrong command

  //     mode prefix

  class seq_4p2 extends uart_base_sequence;

    `uvm_object_utils(seq_4p2)

    function new (string name = "seq_4p2");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == wrong_mode;

        _command    == nop;

        address[15:7] != 2'h00;

        (length_data > 1) -> (_reqinc == yes);

        _arbit      == accept;

        _reqack     == no;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_4p2

  // 4.3 Apply several UART NOP command to different locations with different

  //     data lengths and non-acknowledge request

  class seq_4p3 extends uart_base_sequence;

    rand int unsigned num_of_comands;

    `uvm_object_utils(seq_4p3)

    function new (string name = "seq_4p3");

      super.new(name);

    endfunction:new

    constraint num_iter {

      num_of_comands inside {[1:5]};

    }

    virtual task body ();

      randomize();

      start_item(trans);

      repeat (num_of_comands)

        begin

        trans.randomize() with {

          _mode       == binary;

          _command    == nop;

          (length_data > 1) -> (_reqinc == yes);

          _arbit      == accept;

          _reqack     == no;

        } ;

        end

      finish_item(trans);

    endtask:body

  endclass:seq_4p3

//-------------------------------------------------------

//

//      WRITE IN COMMAND MODE

//

//-------------------------------------------------------

  // 5.1 Apply UART write command with wrong prefix.

  class seq_5p1 extends uart_base_sequence;

    `uvm_object_utils(seq_5p1)

    function new (string name="seq_5p1");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

        _mode       == wrong_mode;

        _command    == write;

        address[15:7] != 2'h00;

        (length_data > 1) -> (_reqinc == yes);

        _arbit      == accept;

      } ;

      finish_item(trans);

    endtask:body

  endclass:seq_5p1

  // 5.2 Apply UART write commands to different addresses.

  class seq_5p2 extends uart_base_sequence;

    rand int unsigned num_of_comands;

    `uvm_object_utils(seq_5p2)

    function new (string name="seq_5p2");

      super.new(name);

    endfunction:new

    constraint num_iter {

      num_of_comands inside {[1:5]};

    }

    virtual task body ();

      randomize();

      start_item(trans);

      repeat (num_of_comands)

        begin

        trans.randomize() with {

                _mode       == binary;

                _command    == write;

                (length_data > 1) -> (_reqinc == yes);

                _arbit      == accept;

              };

        end

      finish_item(trans);

    endtask:body

  endclass:seq_5p2

  // 5.3 Apply UART write commands with several data lengths

  class seq_5p3 extends uart_base_sequence;

    rand int unsigned num_of_comands;

    `uvm_object_utils(seq_5p3)

    function new (string name="seq_5p3");

      super.new(name);

    endfunction:new

    constraint num_iter {

      num_of_comands inside {[1:5]};

    }

    virtual task body ();

      randomize();

      start_item(trans);

      repeat (num_of_comands)

        begin

        trans.randomize() with {

                _mode       == binary;

                _command    == write;

                (length_data > 1) -> (_reqinc == yes);

                _arbit      == accept;

              } ;

        end

      finish_item(trans);

    endtask:body

  endclass:seq_5p3

  // 5.4 Apply UART write command to address 0 with random data.

  class seq_5p4 extends uart_base_sequence;

    `uvm_object_utils(seq_5p4)

    function new (string name="seq_5p4");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

              _mode       == binary;

              _command    == write;

              address     == 16'b0;

              (length_data > 1) -> (_reqinc == yes);

              _arbit      == accept;

            } ;

      finish_item(trans);

    endtask:body

  endclass:seq_5p4

  // 5.5 Apply UART write command to address 0xFFFF with random data.

  class seq_5p5 extends uart_base_sequence;

    `uvm_object_utils(seq_5p5)

    function new (string name="seq_5p5");

      super.new(name);

    endfunction:new

    virtual task body ();

      start_item(trans);

      trans.randomize() with {

              _mode       == binary;

              _command    == write;

              address     == 4'hffff;

              (length_data > 1) -> (_reqinc == yes);

              _arbit      == accept;

            } ;

      finish_item(trans);

    endtask:body

  endclass:seq_5p5

  // 5.6 Apply UART write command with acknowledge request.

  class seq_5p6 extends uart_base_sequence;

    `uvm_object_utils(seq_5p6)