// Learn with Examples, 2020, MIT license
#include <systemc>
using namespace sc_core;
int poprzedni = 5;

SC_MODULE(SUBMODULE1) { // a submodule that writes to channel
  sc_port<sc_signal_out_if<char>> p;

  SC_CTOR(SUBMODULE1) {
    SC_THREAD(writer);

    SC_THREAD(stan2);


    sensitive << p; // triggered by value change on the channel
//    dont_initialize();
  }
  void writer() {
    char init; // init value
    while (true) {
    	wait(SC_ZERO_TIME);
    	std::cout << "Podaj stan: ";
    	std::cin >> init;
    	 if (init == 'q'){
			  sc_stop();
		  }
      p->write(init); // write to channel through port

      wait(1, SC_SEC);
    }
  }



  void stan2() {
        while (true) {

          if (p->read() == '2' && (poprzedni==1)){
          	std::cout  << "Sygnalizator 1: czerw pomaranczowy | Sygnalizator 2: pomaranczowy | Tramwaj 1 Czerwony | Tramwaj 2 Zielony \n";
          	poprzedni=2;
          }
          wait(1, SC_SEC); // receives from channel through port
        }
     }





};
SC_MODULE(SUBMODULE2) { // a submodule that reads from channel
  sc_port<sc_signal_in_if<char>> p;
  SC_CTOR(SUBMODULE2) {
    SC_THREAD(stan5);

    sensitive << p; // triggered by value change on the channel

  }

  void stan5() {
	  while (true) {

		if (p->read() >= '5'){
			std::cout  << "Sygnalizator: Pomaranczowy awaryjny \n";
			poprzedni = 5;
		}
		wait(1, SC_SEC); // receives from channel through port
	  }
   }
};


SC_MODULE(MODULE1) { // top-level module
  sc_port<sc_signal_out_if<char>> p; // port
  SUBMODULE1 sub1; // declares submodule
  SC_CTOR(MODULE1): sub1("sub1") { // instantiate submodule
    sub1.p(p); // bind submodule's port directly to parent's port
    SC_THREAD(stan1);
    SC_THREAD(stan3);
    SC_THREAD(stan4);
  }

  void stan1() {
      while (true) {
        if (p->read() == '1' && poprzedni == 5){
        	std::cout  << "Sygnalizator 1: Czerwony | Sygnalizator 2: Zielony | Tramwaj 1 Czerwony | Tramwaj 2 Zielony \n";
        	poprzedni=1;
        }
        wait(1, SC_SEC); // receives from channel through port
      }
   }


  void stan3() {
          while (true) {

            if (p->read() == '3' && (poprzedni==2)){
            	std::cout  << "Sygnalizator 1: zielony | Sygnalizator 2: czerwony | Tramwaj 1 Zielony | Tramwaj 2 Czerwony \n";
            	poprzedni=3;
            }
            wait(1, SC_SEC); // receives from channel through port
          }
       }

  void stan4() {
            while (true) {

              if (p->read() == '4' && (poprzedni==3)){
              	std::cout  << "Sygnalizator 1: pomaranczowy | Sygnalizator 2: Czerwony + pomaranczowy | Tramwaj 1 Zielony | Tramwaj 2 Czerwony \n";
              	poprzedni=4;
              }
              wait(1, SC_SEC); // receives from channel through port
            }
         }

};
SC_MODULE(MODULE2) {
  sc_port<sc_signal_in_if<char>> p;
  SUBMODULE2 sub2;
  SC_CTOR(MODULE2): sub2("sub2") {
    sub2.p(p); // bind submodule's port directly to parent's port
  }
};


int sc_main(int, char*[]) {
  MODULE1 module1("module1"); // instantiate module1
  MODULE2 module2("module2"); // instantiate module2

  sc_signal<char> s; // define channel outside module1 and module2
  module1.p(s); // bind module1's port to channel, for writing purpose
  module2.p(s); // bind module2's port to channel, for reading purpose
  sc_start();
  return 0;
}
                                
                            

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