//created by Becca Kilday
//HW 2 Problems 1&2

#define greenLED 10
#define redLED 11
#define yellowLED 12

void setup() 
{
 pinMode (greenLED, OUTPUT);
 pinMode (redLED, OUTPUT);
 pinMode (yellowLED, OUTPUT);
 Serial.begin(9600);
}

void loop() {
                      // 0 seconds
 digitalWrite (greenLED, HIGH);
 digitalWrite (redLED, LOW);
 digitalWrite (yellowLED, HIGH); //all lights on
 delay (500);         // .5 seconds                      
 digitalWrite (greenLED, LOW); //green off after .5s
 digitalWrite (redLED, HIGH); //red on after .5s
 delay (500);         // 1 second 
  Serial.print (digitalRead (greenLED));
  Serial.print (digitalRead (redLED));
  Serial.print (digitalRead (yellowLED));
  Serial.println (" ");  // should be 011                     

 digitalWrite (greenLED, HIGH); //green on after 1s
 delay (500);         // 1.5 seconds                     
 digitalWrite (greenLED, LOW); //green off after 1.5s
 digitalWrite (redLED, LOW); //red off after 1.5s
 delay (500);         // 2 seconds   
  Serial.print (digitalRead (greenLED));
  Serial.print (digitalRead (redLED));
  Serial.print (digitalRead (yellowLED)); 
  Serial.println (" ");   // should be 001                  

 digitalWrite (greenLED, HIGH); //green on after 2s
 digitalWrite (redLED, LOW); //red off after 2s
 digitalWrite (yellowLED, LOW); //yellow off after 2s
 delay (500);         // 2.5 seconds                    
 digitalWrite (greenLED, LOW); //green off after 2.5s
 digitalWrite (redLED, HIGH); //red on after 2.5s
 delay (500);         // 3 seconds  
  Serial.print (digitalRead (greenLED));
  Serial.print (digitalRead (redLED));
  Serial.print (digitalRead (yellowLED));
  Serial.println (" ");   // should be 010
 
 digitalWrite (greenLED, HIGH); //green on after 3s
 delay (500);         // 3.5 seconds
 digitalWrite (greenLED, LOW); //green off after 3.5s
 digitalWrite (redLED, LOW); //red off after 3.5s

}