无法编译我的UVM类

我有两个文件sequence_item.sv和sequencer.sv分别与下面的内容。我无法编译sequencer.sv，错误为无法编译我的UVM类

** Error: /afs/asu.edu/users/s/m/u/smukerji/UVM_practice/sequencer.sv(6): (vlog-2730) Undefined variable: 'Packet'.

可能这是一个简单的错误。我的两个类是作为

//Sequence item 
import uvm_pkg::*; 
`include "uvm_macros.svh" 

    class Packet extends uvm_sequence_item; 

     typedef enum bit [1:0] {NO_ERROR, SINGLE_ERROR, DOUBLE_ERROR, MULTIPLE_ERROR} err_type; 

     rand logic [127:0] correct_data_in; 
     rand logic valid_in; 
     logic [136:0] corrupted_data_in; 
     rand logic corrupt_valid_in; 
     rand bit error; 
     rand bit [127:0] err_pos; 
     randc err_type error_type; 
     logic [136:0] corrupt_data; 

     constraint type_of_error   { (error == 0) -> error_type == NO_ERROR; } 

     constraint error_sequence { 
      if (error_type == SINGLE_ERROR)   $countones(err_pos) inside {0,1}; 
      else if (error_type == DOUBLE_ERROR) $countones(err_pos) inside {1,2}; 
      else if (error_type == MULTIPLE_ERROR) $countones(err_pos) inside {2,127}; 
      else err_pos inside {0, 0}; 
         } 


     `uvm_object_utils_begin(Packet) 
      `uvm_field_enum(err_type, error_type, UVM_ALL_ON) 
      `uvm_field_int(correct_data_in, UVM_ALL_ON|UVM_NOPACK) 
      `uvm_field_int(valid_in, UVM_ALL_ON|UVM_NOPACK) 
      `uvm_field_int(corrupted_data_in, UVM_ALL_ON|UVM_NOPACK) 
      `uvm_field_int(corrupt_valid_in, UVM_ALL_ON|UVM_NOPACK) 
      `uvm_field_int(error, UVM_ALL_ON) 
      `uvm_field_int(err_pos, UVM_ALL_ON) 
     `uvm_object_utils_end 

     function new(string name="Packet"); 
      super.new(name); 
     endfunction 

     function logic [136:0] create_corrupt_data; 
      logic [136:0] corrupt_data; 
      corrupt_data = err_pos^correct_data_in; 
      return corrupt_data; 
     endfunction 

     //virtual function void do_pack (uvm_packer packer); 
      //super.do_pack(packer); 
      //`uvm_pack_int(correct_data_in); 
      //`uvm_pack_int(valid_in); 
      //`uvm_pack_int(corrupted_data_in); 
      //`uvm_pack_int(corrupt_valid_in); 
      //packer.pack_field_int(correct_data_in,$bits(correct_data_in)); 
      //packer.pack_field_int(valid_in,$bits(valid_in)); 
      //packer.pack_field_int(corrupted_data_in,$bits(corrupted_data_in)); 
      //packer.pack_field_int(corrupt_valid_in,$bits(corrupt_valid_in)); 
     //endfunction 

     //virtual function void do_unpack (uvm_packer packer); 
       //super.do_unpack(packer); 
       //correct_data_in = packer.unpack_field_int($bits(correct_data_in)); 
      //valid_in = packer.unpack_field_int($bits(valid_in)); 
      //corrupted_data_in = packer.unpack_field_int($bits(corrupted_data_in)); 
      //corrupt_valid_in = packer.unpack_field_int($bits(corrupt_valid_in)); 
      //endfunction 


    endclass

而且，我的sequencer.sv作为

//Sequencer 
import uvm_pkg::*; 
`include "uvm_macros.svh" 


typedef uvm_sequencer #(Packet) packet_sequencer;

来源

2017-03-10 Shankhadeep Mukerji

你最有可能在不同的文件中单独编译这两个代码类。在一个编译单元中编译的代码对另一个编译单元不可见。你应该将类编译成一个包。

package my_stuff; 
    `include "Packet.svh" 
    `include "packet_sequencer.svh" 
endpackage

来源

2017-03-10 07:59:01

所以你说要在包中包含所有类作为class_name.svh，然后在所有文件中包含并导入包？另外，对于我来说，音序器不是一个类 –

是的，ou将包导入使用这些类的文件中。你可以把'typedef'直接放在定义包的文件中，你可以从另一个文件中包含它们。请参阅http://go.mentor.com/package-import-versus-include –

无法编译我的UVM类

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