/*******************************************************************************
* Arduino cookbook v.2 - page 15 - chapter 1.6 - 1.10.2023                     *
* Sketch responsible for analog read from LDR (light dependent resistor)       *
*  module and maping read volume into a digital blink period.                  *
*******************************************************************************/

const int ledPin = 13; // LED connected to digital pin 13
const int sensorPin = 0; // connect sensor to analog input 0

//set maping values
int minDuration = 200;
int maxDuration = 800;

void setup() {
  // put your setup code here, to run once:
  pinMode(ledPin, OUTPUT); // enable output on the led pin
}

void loop() {
  // put your main code here, to run repeatedly:
  int rate = analogRead(sensorPin); // read the analog input
  Serial.println(rate);
  rate = map(rate, 200,800,minDuration, maxDuration); // convert to blink rate 
     // refer to https://www.arduino.cc/reference/en/language/functions/math/map/
  digitalWrite(ledPin, HIGH); // set the LED on
  delay(rate); // wait duration dependent on light level
  digitalWrite(ledPin, LOW); // set the LED off
  delay(rate);

}