 #include <Adafruit_PWMServoDriver.h>
 #include <Wire.h>
 #include "pitches.h"
+
+#define DEBUG 0
 
 // **************************
 // **** PROXIMITY SENSOR ****

void loop()
{
  photocell_reading = analogRead(photocell_pin);
  Serial.print("Analog reading = ");
  Serial.print(photocell_reading);
  Serial.print("\t");
  
  // When it gets bright or dark, make a sound.
  // Don't play the sound again until it's normal lighting out.

  }
  
  write8(VCNL4000_IRLED, 20);        // set to 20 * 10mA = 200mA
#if DEBUG
  Serial.println("VCNL");
  Serial.print("IR LED current = ");
  Serial.print(read8(VCNL4000_IRLED) * 10, DEC);
  Serial.println(" mA");
  Serial.print("Proximity measurement frequency = ");
#endif
  uint8_t freq = read8(VCNL4000_SIGNALFREQ);
#if DEBUG
  if (freq == VCNL4000_3M125) Serial.println("3.125 MHz");
  if (freq == VCNL4000_1M5625) Serial.println("1.5625 MHz");
  if (freq == VCNL4000_781K25) Serial.println("781.25 KHz");
  if (freq == VCNL4000_390K625) Serial.println("390.625 KHz");
#endif
  
  write8(VCNL4000_PROXIMITYADJUST, 0x81);
#if DEBUG
  Serial.print("Proximity adjustment register = ");
  Serial.println(read8(VCNL4000_PROXIMITYADJUST), HEX);
#endif
  
  // Initialize the pushbutton pin as an input.
  pinMode(button_pin, INPUT);
