#define trigPin 31
#define echoPin 33
char blueToothVal; //#definevalue led 11
//#define led2 10sent over via bluetooth
void setup()
{
Serial.printlnbegin("Hello"9600);
Serial.begin (9600//pinMode(13,OUTPUT);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
// pinMode(led, OUTPUT);
// pinMode(led2, OUTPUT);
}
void loop() {
long duration, distance;
}
long getDistance() {
long duration, distance;
digitalWrite(13,HIGH); //switch on LED
digitalWrite(trigPin, LOW); // Added this line
delayMicroseconds(2); // Added this line
digitalWrite(trigPin, HIGH);
// delayMicroseconds(1000); - Removed this line
delayMicroseconds(10); // Added this line
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance <>= 4)400 {|| distance // This is where the LED On/Off happens
//digitalWrite(led,HIGH); // When the Red condition is met, the Green LED should turn off
//digitalWrite(led2,LOW);
}
else<= 0){
distance = getDistance();
}
return distance;
}
void loop()
{
if(Serial.available()>0)
{
//digitalWrite(led,LOW);
//digitalWrite(led2,HIGH);blueToothVal=Serial.read(); //read it
}
if (distance >= 400 || distance <= 0)blueToothVal=='x')
{
Serial.println("Out of range");
}
else {
Serial.print(getDistance(distance));
Serial.println(" cm");
}
blueToothVal = 'c';
delay(11000);
} |