project: APDS-9930 Digital Proximity and Ambient Light Sensor

  
/****************************************************************

 Arduino Pin  APDS-9930 Board  Function

 3.3V         VCC              Power
 GND          GND              Ground
 A4           SDA              I2C Data
 A5           SCL              I2C Clock
****************************************************************/

#define DUMP_REGS

#include <Wire.h>
#include <APDS9930.h>

// Global Variables
APDS9930 apds = APDS9930();
float ambient_light = 0; // can also be an unsigned long
uint16_t ch0 = 0;
uint16_t ch1 = 1;

void setup()
{

  // Initialize Serial port
  Serial.begin(9600);
  Serial.println();

  // Initialize APDS-9930 (configure I2C and initial values)
  if ( apds.init() )
  {
    Serial.println(F("APDS-9930 initialization complete"));
  }
  else
  {
    Serial.println(F("Something went wrong during APDS-9930 init!"));
  }

  // Start running the APDS-9930 light sensor (no interrupts)
  if ( apds.enableLightSensor(false) )
  {
    Serial.println(F("Light sensor is now running"));
  }
  else
  {
    Serial.println(F("Something went wrong during light sensor init!"));
  }

  // Wait for initialization and calibration to finish
  delay(500);
}


void loop()
{

  // Read the light levels (ambient, red, green, blue)
  if (  !apds.readAmbientLightLux(ambient_light) ||
        !apds.readCh0Light(ch0) ||
        !apds.readCh1Light(ch1) ) {
    Serial.println(F("Error reading light values"));
  }
  else
  {
    Serial.print(F("Ambient: "));
    Serial.print(ambient_light);
    Serial.print(F("  Ch0: "));
    Serial.print(ch0);
    Serial.print(F("  Ch1: "));
    Serial.println(ch1);
  }

  // Wait 1 second before next reading
  delay(1000);
}