trafficlight.cc

一个用system C来实现的交通灯控制算法

#include "TrafficLight.h"

TrafficLight::TrafficLight(sc_module_name name)
  :sc_module(name)
{

  SC_THREAD(event_trigger_thread);
  SC_METHOD(control_lights);
  dont_initialize();
  sensitive << control_lights_event;

}

void TrafficLight::control_lights()
{
    double lig;  
    int sen = sensors->read();
                                // binary
    if (sen == 0x08 or sen == 0x09 or sen == 0x0A or sen == 0x0B) { 
        lig = 0x04;             // 0100
        }
    else if (sen == 0x04 or sen == 0x05 or sen == 0x06 or sen == 0x07) { 
        lig = 0x08;             // 1000
        }
    else if (sen == 0x02) {     // 0010
        lig = 0x01;             // 0001
        }
    else if (sen == 0x01) {     // 0001
        lig = 0x02;             // 0010
        }
    else if (sen == 0x0C or sen == 0x0D or sen == 0x0E or sen == 0x0F) { 
        lig = 0x0C;             // 1100
        }
    else if (sen == 0x03) {     // 0011
        lig = 0x03;             // 0011
        }
    else lig = 0x00;            // 0000
    
    lights->write(lig);
}

void TrafficLight::event_trigger_thread()
{
  for(;;) {
    wait(5,SC_SEC);  // delay 5 second between each state
    control_lights_event.notify();
  }
}