Project_V4

BH-MahmoudGHussein
// Declerations
// Constants
const int trig = 7;
const int echo = 8;
const int buz = 6;
// Variables
unsigned int dist;
long dua;
int brightness;
int ldr = A0;
int x;


void setup()
{
      Serial.begin(9600); // initialization.
      pinMode(buz, OUTPUT);
      pinMode(trig, OUTPUT);
      pinMode(echo, INPUT);
      pinMode(ldr, INPUT);
}

void loop()
{
     check_brightness();
     check_obas(trig,echo);

}

void check_obas(int trig,int echo)
{
      digitalWrite(trig, LOW); // clears the trigger pin
      delayMicroseconds(2);
      digitalWrite(trig, HIGH); // set the trigger pin High for 10us
      delayMicroseconds(10);
      digitalWrite(trig, LOW); // set the trigger pin Low.
      dua = pulseIn(echo, HIGH); // read the echo pin and we get the duaration in us
      dist = (dua/2) * 0.034; // "0.034" is speed of sound in cm/us
      Serial.print(dist); // debugging
      Serial.println("cm"); // debugging
      if ( dist > 200 )
        digitalWrite(buz,LOW);
      else if ( dist < 200 && dist > 150)
      {
        buz3(dist,buz);
      }
      else if (dist < 150 && dist > 50)
      {
        buz2(dist,buz);
      }
     else if ( dist < 50 && dist > 0)
     {
      buz1(dist,buz);
     }
}


void buz1(unsigned int Z, int Y)
{
          for (x= Z; x>0 ; x--)
          {
           digitalWrite(Y,HIGH);
           delay(50);
           digitalWrite(Y,LOW);
           delay(50);
          }
}

void buz2(unsigned int Z, int Y)
{
          for (x= Z; x>0 ; x--)
          {
           digitalWrite(Y,HIGH);
           delay(150);
           digitalWrite(Y,LOW);
           delay(150);
          }
}

void buz3(unsigned int Z, int Y)
{
          for (x= Z; x>0 ; x--)
          {
           digitalWrite(Y,HIGH);
           delay(500);
           digitalWrite(Y,LOW);
           delay(500);
          }
}


void check_brightness()
{
        int brightenss = analogRead(ldr);

        if (brightness < 100)
        {
          Serial.println("State: Dark");
          buz1(brightness,buz);
        }
        else if (brightness < 250  && brightness > 100)
        {
          Serial.println("State: Dim Light");
          buz2(brightness,buz);
        }
        else if (brightness < 650 && brightness > 250)
        {
          Serial.println("State: mid brightness");
          buz3(brightness,buz);
        }
        else
        {
          Serial.println("State: V.bright");
          digitalWrite(buz,LOW);
        }
  }