Police Car Pinewood Derby Car Source Code

/*
  Police Car

   B.J. H.
   Bryan H.

   01-19-2014

   Code for B.J.s Pinewood Derby
 */

const int SPEAKER = P1_2;
/*                   Frnt,Frnt,Rear,Rear,TopR,TopR,TopB,TopB    */
const int LEDS[8] = {P2_0,P2_1,P2_2,P2_3,P2_4,P2_5,P1_4,P1_5};
const int SWITCHES[2] = {P1_0,P1_1};

const int Light_Pattern[16][8] = {
  { 1, 0, 1, 0, 1, 0, 0, 1},
  { 0, 0, 1, 0, 1, 0, 0, 1},
  { 1, 0, 1, 0, 1, 0, 0, 1},
  { 0, 0, 1, 0, 1, 0, 0, 1},
  { 0, 1, 1, 0, 0, 1, 1, 0},
  { 0, 0, 1, 0, 0, 1, 1, 0},
  { 0, 1, 1, 0, 0, 1, 1, 0},
  { 0, 0, 1, 0, 0, 1, 1, 0},
  { 1, 0, 0, 1, 1, 0, 0, 1},
  { 0, 0, 0, 1, 1, 0, 0, 1},
  { 1, 0, 0, 1, 1, 0, 0, 1},
  { 0, 0, 0, 1, 1, 0, 0, 1},
  { 0, 1, 0, 1, 0, 1, 1, 0},
  { 0, 0, 0, 1, 0, 1, 1, 0},
  { 0, 1, 0, 1, 0, 1, 1, 0},
  { 0, 0, 0, 1, 0, 1, 1, 0}
};

const int Normal[8] = {1,1,1,1,0,0,0,0};

/* flags */
int button1State;
int button2State;
int loaded = 0;
int racing = 0;


void setup() {
  int i;
  for (i=0;i<8;i++){
     pinMode(LEDS[i],OUTPUT);
     digitalWrite(LEDS[i],LOW);
  }
  for (i=0;i<2;i++){
    pinMode(SWITCHES[i], INPUT_PULLUP);
  }
}

void loop() {
  int i;
  if ((digitalRead(SWITCHES[1]) == LOW) && (loaded == 0))
  {
    ready_state();
  }
  if (digitalRead(SWITCHES[1]) ==  HIGH)
  {
   loaded = 0;
   racing = 0;
  }

  if (loaded && digitalRead(SWITCHES[0]) == LOW){
    racing = 1;
  }
  if (racing && loaded && digitalRead(SWITCHES[0]) == HIGH){
     siren();
  }
  else
  {
    noTone(SPEAKER);
    for(i=0;i<8;i++){
      digitalWrite(LEDS[i],Normal[i]);
    }
  }
}

void waiting_to_go(){
}

void ready_state(){
  tone(SPEAKER,900);
  digitalWrite(LEDS[2],LOW);
  digitalWrite(LEDS[3],LOW);
  delay(50);
  noTone(SPEAKER);
  digitalWrite(LEDS[2],HIGH);
  digitalWrite(LEDS[3],HIGH);
  delay(50);
  tone(SPEAKER,900);
  digitalWrite(LEDS[2],LOW);
  digitalWrite(LEDS[3],LOW);
  delay(50);
  noTone(SPEAKER);
  digitalWrite(LEDS[2],HIGH);
  digitalWrite(LEDS[3],HIGH);
  loaded = 1;
}

void siren(){
  int i;
  int k;
  int l;
  while ((digitalRead(SWITCHES[0]) == HIGH) && (digitalRead(SWITCHES[1]) == LOW)) {
    for (k=0;k<8;k++){
      for (l=0;l<8;l++){
        digitalWrite(LEDS[l],Light_Pattern[k*2][l]);
      }
      for (i=650;i<900;i=i+2){
        tone(SPEAKER,i);
        delay(1);
      }
      for (l=0;l<8;l++){
        digitalWrite(LEDS[l],Light_Pattern[(k*2)+1][l]);
      }
      for (i=900;i>650;i=i-2){
        tone(SPEAKER,i);
        delay(1);
      }
    }
  }
}