// ************************************
// * NAME      Rhys Miller                   *
// * Program:  Arduino Program 3             *
// * Date:     MAR 7 2024                    *
// * Desc:     Adjustable delay light chaser *
// *******************************************


int buttonNumber = 7 ;   // set variable buttonNumber to pin 8
int patternNumber = 0;   // sets variavle patternNumber to 0
int delayTime = 100 ;    // set variable delayTime to 0 milliseconds
int patternArray[6][4] = {{0,48,16,0},{0,8,16,32},{0,24,40,48},{0,24,8,0},{0,32,16,8},{0,48,40,24}}; // creates
// a two dimensional 6 by 4 array that stores all the sequences for all the patterns as per d2l assignment

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);
  Serial.println(delayTime);

  delayTime = analogRead(A5); // set delay time acorindinng to signal from potentiometer
  
  // Checks if button is pressed, if so it changes the pattern number by 1
  if (digitalRead(buttonNumber) == 0 ){
    patternNumber ++ ;
    // when it reaches pattern 5 it resets patternNumber to 0
    if (patternNumber >5) {
      patternNumber = 0; }
  } // end if
  
  // for loop that controls the sequence in the pattern writes the data to PORTB
  for (int x = 0; x < 4; x++){
    PORTB = patternArray[patternNumber][x];
    delay(delayTime);
  } // end loop
  
} // end blinking