// ************************************
// * NAME      Rhys Miller            *
// * Program:  Arduino Program 2      *
// * Date:     FEB 27 2024            *
// * Desc:     DDR Light Chaser       *
// ************************************ 

int pinNumberRed = 13 ;  // set variable pinNumberRed to pin 13
int pinNumberYel = 12 ;  // set variable pinNumberYel to pin 12
int pinNumberGre = 11 ;  // set variable pinNumberGre to pin 11
int buttonNumber = 7 ;   // set variable buttonNumber to pin 8
int patternNumber = 0;   // sets variavle patternNumber to 0
int delayTime = 100 ;    // set variable delayTime to 100 milliseconds

void setup() {
  // put your setup code here, to run once:
  
  Serial.begin(9600);      // begins serial monitor feedback to monitor at 9600bps
  pinMode(7,INPUT_PULLUP); // set pinMode for pin 7 to INPUT_PULLUP
  DDRB = B111111 ;         // set Data Direction Register for PORTB to all output
} // end setup

void loop() {
  // put your main code here, to run repeatedly:
  
  // prints current patterNumber to serial monitor
  Serial.println(patternNumber);

  // Checks if button is pressed and if so it changes the pattern number by 1 till it reaches a max value of 5 and then resets to 0
  if (digitalRead(buttonNumber) == 0 ){
    patternNumber ++ ;
    if (patternNumber >5) {
      patternNumber = 0;
    }
    
    
  }// end if()

  // checks current pattern number and changes the led patter accordingly
  
  if(patternNumber == 0){              // checks if patternNumber = 0

    // start of pattern 0

    // First sequence in pattern 0
    PORTB = B000110 ; // OFF-OFF-OFF-ON-ON-OFF
    delay(delayTime);

    // Second sequence in pattern 0
    PORTB = B000010 ; // OFF-OFF-OFF-OFF-ON-OFF
    delay(delayTime);

    // Final sequence in pattern 0
    PORTB = B000000 ; // OFF-OFF-OFF-OFF-OFF-OFF
    delay(delayTime);

    // end of pattern 0
  } else if(patternNumber == 1){       // if not pattern zero checks for patternNumber = 1

    // start of pattern 1

    // first sequence in pattern 1
    PORTB = B000001 ; // OFF-OFF-OFF-OFF-OFF-ON
    delay(delayTime);

    // second sequence in pattern 1  
    PORTB = B000010; // OFF-OFF-OFF-OFF-ON-OFF
    delay(delayTime);

    // final sequence in pattern 1
    PORTB = B000100 ; // OFF-OFF-OFF-ON-OFF-OFF
    delay(delayTime);

    // end of pattern 1
  } else if(patternNumber == 2){      // if not pattern one checks for patternNumber = 2

    // start of pattern 2

    // first sequence of pattern 2
    PORTB = B000011; // OFF-OFF-OFF-OFF-ON-ON
    delay(delayTime);

    // second sequence of pattern 2
    PORTB = B000101 ; // OFF-OFF-OFF-ON-OFF-ON
    delay(delayTime);

    // final sequence of of pattern 2
    PORTB = B000110; // OFF-OFF-OFF-ON-ON-OFF
    delay(delayTime);

    // end of pattern 2
  } else if(patternNumber == 3){      // if not pattern two checks for patternNumber = 3

    // start of pattern 3

    // first sequence of pattern 3
    PORTB = B000011; // 0FF-OFF-OFF-OFF-ON-ON
    delay(delayTime);
    
    // second sequence of pattern 3
    PORTB = B000001; // OFF-OFF-OFF-OFF-OFF-ON
    delay(delayTime);

    // final sequence of pattern 3
    PORTB = B000000; // OFF-OFF-OPFF-OFF-OFF-OFF
    delay(delayTime);

    // end of pattern 3
    } else if(patternNumber == 4){      // if not pattern three checks for patternNumber = 4

    // start of pattern 4

    // first sequence of pattern 4
    PORTB = B000100; // OFF-OFF-OFF-ON-OFF-OFF
    delay(delayTime);

    // second sequence of pattern 4
    PORTB = B000010; // OFF-OFF-OFF-OFF-ON-OFF
    delay(delayTime);

    // final sequence of pattern 4
    PORTB = B000001; // OFF-OFF-OFF-OFF-OFF-ON
    delay(delayTime);

    // end of pattern 4
    } else {                           // if not pattern four starts pattern 5

    // start of pattern 5

    // first sequence of pattern 5
    PORTB = B000110; // OFF-OFF-OFF-ON-ON-OFF
    delay(delayTime);

    // second seqence of pattern 5
    PORTB = B000101; // OFF-OFF-OFF-ON-OFF-ON
    delay(delayTime);

    // final seqence of pattern 5
    PORTB = B000011; // OFF-OFF-OFF-OFF-ON-ON
    delay(delayTime);

    // end of pattern 5
  }
  
} // end blinking