bind multi ports to other port.

[DS1701]

Hi all,

I have 2 models, model A and model B

Model A has an output port out_A (bool)

Model B has an input port in_B (bool)

when integrate, I will instance 3 objects of Model A, 1 object of Model B

//file @connection.cpp
...
void initializeENV(){
...
objA_1 = new ModelA("objA_1");
objA_2 = new ModelA("objA_2");
objA_3 = new ModelA("objA_3");

objB = new ModelB("objB");
...
}

the value of in_B = objA_1->out_A or objA_2->out_A or objA_3->out_A

I think that, if I bind as below . It is wrong. Because of when objA_1->out_A is change then affect to obj_2->out_A and objA_3->out_A. Is my understand correct?

//file @connection.cpp
...
sc_signal<bool> sig_1;
sc_signal<bool> sig_2;
sc_signal<bool> sig_3;
void initializeENV(){
...
objA_1 = new ModelA("objA_1");
objA_2 = new ModelA("objA_2");
objA_3 = new ModelA("objA_3");
  
objB = new ModelB("objB");

  objA_1->out_A(sig_1);
  objA_2->out_A(sig_2);
  objA_3->out_A(sig_3);
  objB->in_B(sig_1);
  objB->in_B(sig_2);
  objB->in_B(sig_3);
  
...
}

How to resolve it? How to bind 3 out_A ports to in_B port? .I can't use SC_METHOD in this case.

Thank all.

 

[maehne]

sc_core::sc_in<T> only allows binding of a single sc_core::sc_signal<T> (cf. to IEEE Std 1666-2011, clause 6.8). However, you may use for in_B a sc_core::sc_port<sc_core::sc_signal_in_if<T>, 3, SC_ONE_OR_MORE_BOUND> (cf. to IEEE Std 1666-2011, clause 5.12) that will accept binding of exactly three signals. The implementation of the OR relation of the three signals can be then handled inside an SC_METHOD of objB. To access the three different signal from in_B, you can use the operator[] implemented by the sc_port. By the way, you may also specify a different number of channels to be bound and also a different port binding policy.

[Eyck]

Another option would be to use a resolved signal and connect all output ports to it.

But this is already about techincal implementation options. The question to me is: what would you like to model? Is this the right way to model the intend?

Best regards