KMLM List

["balyusuf @iastate.edu" <balyusuf@xxxxxxxxxxx>]

Hello all,

I added the inverter and did the unbound port, that solved the unbound error I was getting. so Thanks for your help.   However I am get wrong results.  I am trying to debug my inverter method and when I print the in/out of the inverter, I always get the input and the output identical (either both 0 or both 1)

here is my code for the inverter:

//FILE: INVERTER.h

#include <systemc.h> 
#include <iostream>

SC_MODULE(inverter) {
   
  sc_in<bool>    A;
  sc_out<bool>    Invert_A;
 

  void invert(void);
  
  SC_CTOR(inverter) {
    SC_THREAD(invert);
    sensitive << A;
  }
};


//FILE:inverter.cpp


#include "inverter.h"
#include <iostream>
void inverter::invert(void) {
    
    bool temp = ! A.read();
    Invert_A.write(temp);
    std::cout << "Time:" << sc_time_stamp()<< endl <<" inverter_Input : " << A << endl << " inverter_Output : " << Invert_A << endl ;
}


I think I am missing something simple but I could not find it. please help!

Thanks

On Mon, Feb 20, 2012 at 2:35 AM, Salvatore Galfano <galfanosalvatore@xxxxxxxxx> wrote:

Hi,

this error message was gave to me when I tried to write on a port in the CTOR. In the "Creation part" port are not still working. I used the .initialize() method of the ports and then everything worked (but this is not your case). In your code I could think that the error comes from this line:

NotSel = !(Mux_2_Sel.read());  //you're trying to read and write a port in CTOR.

Try to move this statement in a separate method like

void inverter_method(){
NotSel = !(Mux_2_Sel.read());
}

and then in the CTOR

SC_METHOD(inverter_method);
sensitive<<Mux_2_Sel;

However, if you're trying to model a mux with basic gates, I can't figure out why did not you write also a module for the simple inverter port (even if very basic it IS a port, and it should be instantiated as well as other ports in your design, in order to be coherent).
Please let me know!

SG

Il 20/02/2012 09:13, 杨庆庆 ha scritto:

balyusuf @iastate.edu，您好！

 

　　Well, I think "unbound" means "unconnected".

I suggest you check the source code carefully. I have met similar errors, and generally it is because of typo error.

 

======== 2012-02-20 11:57:56 您在来信中写道： ========

 

Hi Alan,

the error message is

Error: (E112) get interface failed: port is not bound: port 'my_mux_2.port_2' (sc_in)
In file: c:\systemc-2.2.0\src\sysc\communication\sc_port.cpp:265
Press any key to continue . . .


Would you explain to me what "unbound" exactly means?  I thought I am assigning signals to all the ports, but maybe I am doing that wrong.
In Mux_2.cpp I am assigning (Mux_2_Output = Mux_Out;) would that be sufficient or I have to have it assigned in Mux_2.h ?

Thanks for the help,

On Sun, Feb 19, 2012 at 2:00 PM, <alan.fitch@xxxxxxxxxx> wrote:

Hi,
 it's probably best to post the error message. I would expect it to say port_3, not port_2, as you appear to have left the 4th port of your mux unbound (I put ****s next to the unbound port below),

regards
Alan



-----<systemc-forum@xxxxxxxxxxxxxxxxxxx> wrote: -----
To: "systemc-forum@xxxxxxxxxxxxxxxxxxx" <systemc-forum@xxxxxxxxxxxxxxxxxxx>
From: "balyusuf @iastate.edu"
Sent by:
Date: 19/02/2012 19:47
Subject: [systemc-forum] HELP! "port not bound" error

Hello All,

I was able to get systemc installed on VC++.  and I am working on Mux-2:1 from "and-2" and "or_2" gates.  The code compiles and builds correctly yet I am getting a run-time error.  The error is about (my_mux_2.port_2 not bound).  Could you please help me in this with thanks in advance.


//OR_2.h
#include <systemc.h>
#include <iostream>

SC_MODULE(or_2) {
  
  sc_in<bool>  Or_A;
  sc_in<bool>  Or_B;
  sc_out<bool>  Or_Output;
 

  void do_or(void);
  
  SC_CTOR(or_2) {
    SC_METHOD(do_or);
    sensitive << Or_A << Or_B 
  }
};


//FILE:AND_2.h
#include <systemc.h>
#include <iostream>

SC_MODULE(and_2) {
   sc_in<bool>  And_A;
  sc_in<bool>  And_B;
  sc_out<bool>  And_Output;

  void do_and(void);
 
  SC_CTOR(and_2) {
    SC_METHOD(do_and);
    sensitive << And_A << And_B ;
    
  }
};

//FILE:Mux_2.h
#include <systemc.h>
#include <iostream>
#include "and_2.h"
#include "or_2.h"

SC_MODULE(Mux_2) {
  
  sc_in<bool>  Mux_2_In1;
   sc_in<bool>  Mux_2_In2;
  sc_in<bool>  Mux_2_Sel;

  sc_out<bool>  Mux_2_Output; ********************* UNBOUND!

  and_2 And_Gate1, And_Gate2, And_Gate3;
  or_2 Or_Gate1, Or_Gate2;

  sc_signal<bool> NotSel, A_AND_B, A_AND_NotSel, B_AND_Sel, A_AND_NotSel_OR_A_AND_B, Mux_Out;

  void Mux(void);

  SC_CTOR(Mux_2): And_Gate1("And_Gate1"), And_Gate2("And_Gate2"),
      And_Gate3("And_Gate3"), Or_Gate1("Or_Gate1"), Or_Gate2("Or_Gate2")
   {
      NotSel = !(Mux_2_Sel.read());
      And_Gate1.And_A(Mux_2_In1); And_Gate1.And_B(Mux_2_In2); And_Gate1.And_Output(A_AND_B);
      And_Gate2.And_A(Mux_2_In1); And_Gate2.And_B(NotSel); And_Gate2.And_Output(A_AND_NotSel);
       And_Gate3.And_A(Mux_2_In2); And_Gate3.And_B(NotSel); And_Gate3.And_Output(B_AND_Sel);
     
      Or_Gate1.Or_A(A_AND_B); Or_Gate1.Or_B(A_AND_NotSel); Or_Gate1.Or_Output(A_AND_NotSel_OR_A_AND_B);
      Or_Gate2.Or_A(A_AND_NotSel_OR_A_AND_B); Or_Gate2.Or_B(B_AND_Sel); Or_Gate2.Or_Output(Mux_Out);

      SC_METHOD(Mux);
      sensitive << Mux_2_Sel << Mux_2_In1 << Mux_2_In2;

  }
};

//FILE:tb.h

#include <systemc.h>
#include <iostream>

SC_MODULE(tb) {
   
  sc_out<bool>  A, B, sel;
    //sc_signal<bool> A,B,sel;

  void testcases(void);
 
  SC_CTOR(tb) {
    SC_THREAD(testcases);
   
  }
};



//FILE:or_2.cpp


#include "or_2.h"
#include <iostream>
void or_2::do_or(void) {

    Or_Output.write( Or_A.read() || Or_B.read() );
    std::cout << "Time:" << sc_time_stamp()<< endl <<" Fisrt Input:" << Or_A << endl << " Second Input" << Or_B << endl << " Output : " << Or_Output << endl ;
 }

//FILE:AND_2.cpp


#include "and_2.h"
#include <iostream>
void and_2::do_and(void) {
 
    And_Output.write(And_A.read() && And_B.read());
    std::cout << "Time:" << sc_time_stamp()<< endl <<" Fisrt Input:" << And_A << endl << " Second Input" << And_B << endl << " Output : " << And_Output << endl ;
 }

//FILE:MUX_2.cpp

#include <iostream>
#include "Mux_2.h"

void Mux_2::Mux(void){

    Mux_2_Output = Mux_Out;
    std::cout << "Time:" << sc_time_stamp()<< endl <<" First Input:" << Mux_2_In1 << endl << " Second Input" << Mux_2_In2 << endl << " Select Line" << Mux_2_Sel << endl << " Output : " << Mux_2_Output << endl ;
 }


#include "Mux_2.h"
#include "tb.h"
#include "tstbnsh.h"
#include <iostream>


int sc_main(int argc, char* argv[]) {
 
  sc_signal<bool> in1, in2, sel;
  
  tb my_tb("my_tb");
  Mux_2 my_mux_2("my_mux_2");

  my_mux_2.Mux_2_In1(in1);
  my_mux_2.Mux_2_In2(in2);
  my_mux_2.Mux_2_Sel(sel);

*********** my_mux_2.Mux_2_Output... ************** UNBOUND

  my_tb.A(in1);
  my_tb.B(in2);
  my_tb.sel(sel);
  
  sc_start(10, SC_SEC);
  return 0;
}
//FILE:tb.cpp


#include "tb.h"
void tb::testcases(void) {
 
  while(1)
  {
    A = 0;
    B = 0;
    sel=0;
    wait(1, SC_SEC);
    
 
    A = 0;
    B = 1;
    sel=0;
    wait(1, SC_SEC);
}}

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--
Baraa Alyusuf
Computer Engineering
Iowa State University

= = = = = = = = = = = = = = = = = = = = = =

　　　　　　　　致
礼！

 

　　　　　　　　　　　　　　杨庆庆

　　　　　　　　　 　　　　　yangqingqing@xxxxxxxxxxxx

　　　　　　　　　　　　　　　2012-02-20

 

-- 
Baraa Alyusuf
Computer Engineering
Iowa State University