Seeeduino Stalker Xbee Router

stalker_xbee_router.pde

int buzzPin = 11;

void setup() {
  Serial.begin(57600);
  
  pinMode(buzzPin, OUTPUT);
}

void loop() {
  if(Serial.available() > 0) {
    char c = Serial.read();
    if(c == '1') {
      buzz(buzzPin, 2500, 500); // buzz the buzzer on pin 4 at 2500Hz for 500 milliseconds
      Serial.flush();
      delay(2000); // wait a bit between buzzes
    }
  }
}

void buzz(int targetPin, long frequency, long length) {
  long delayValue = 1000000/frequency/2; // calculate the delay value between transitions
  //// 1 second's worth of microseconds, divided by the frequency, then split in half since
  //// there are two phases to each cycle
  long numCycles = frequency * length/ 1000; // calculate the number of cycles for proper timing
  //// multiply frequency, which is really cycles per second, by the number of seconds to 
  //// get the total number of cycles to produce
 for (long i=0; i < numCycles; i++){ // for the calculated length of time...
    digitalWrite(targetPin,HIGH); // write the buzzer pin high to push out the diaphram
    delayMicroseconds(delayValue); // wait for the calculated delay value
    digitalWrite(targetPin,LOW); // write the buzzer pin low to pull back the diaphram
    delayMicroseconds(delayValue); // wait againf or the calculated delay value
  }
}