Test of the APDS9301

APDS9301_NightLightTest.ino

#include "Wire.h"
#include <Sparkfun_APDS9301_Library.h>

APDS9301 apds;

#define INT_PIN 2 // We'll connect the INT pin from our sensor to the
// INT0 interrupt pin on the Arduino.
bool lightIntHappened = false; // flag set in the interrupt to let the
//  mainline code know that an interrupt occurred.
int threshold = 26;

void setup()
{
  pinMode(13, OUTPUT);

  Serial.begin(115200);
  Wire.begin();

  // APDS9301 sensor setup.
  apds.begin(0x39);  // We're assuming you haven't changed the I2C
  //  address from the default by soldering the
  //  jumper on the back of the board.
  apds.setGain(APDS9301::LOW_GAIN); // Set the gain to low. Strictly
  //  speaking, this isn't necessary, as the gain
  //  defaults to low.
  apds.setIntegrationTime(APDS9301::INT_TIME_13_7_MS); // Set the
  //  integration time to the shortest interval.
  //  Again, not strictly necessary, as this is
  //  the default.
  apds.setLowThreshold(0); // Sets the low threshold to 0, effectively
  //  disabling the low side interrupt.
  apds.setHighThreshold(50); // Sets the high threshold to 500. This
  //  is an arbitrary number I pulled out of thin
  //  air for purposes of the example. When the CH0
  //  reading exceeds this level, an interrupt will
  //  be issued on the INT pin.
  apds.setCyclesForInterrupt(1); // A single reading in the threshold
  //  range will cause an interrupt to trigger.
  apds.enableInterrupt(APDS9301::INT_ON); // Enable the interrupt.
  apds.clearIntFlag();

  // Interrupt setup
  pinMode(INT_PIN, INPUT_PULLUP); // This pin must be a pullup or have
  //  a pullup resistor on it as the interrupt is a
  //  negative going open-collector type output.
  attachInterrupt(digitalPinToInterrupt(2), lightInt, FALLING);
}

void loop()
{
  static unsigned long outLoopTimer = 0;
  apds.clearIntFlag();

  // This is a once-per-second timer that calculates and prints off
  //  the current lux reading.
  /*if (millis() - outLoopTimer >= 1000)
    {
    outLoopTimer = millis();
  */
  if (apds.readLuxLevel() < threshold) {

    digitalWrite(13, HIGH);
    delay(100);
  }
  else {
    digitalWrite(13, LOW);
  }
  Serial.print("Luminous flux: ");
  Serial.println(apds.readLuxLevel(), 6);
  /*
      if (lightIntHappened)
      {
        Serial.println("Interrupt");
        lightIntHappened = false;
      }
    }*/
}

void lightInt()
{
  lightIntHappened = true;
}