/*
  74HC595 Arduino Shift Register example for Wokwi
  Copyright (C) 2021, Uri Shaked
  
  License: MIT.
*/


#define LDR_PIN A1

// LDR Characteristics
const float GAMMA = 0.7;
const float RL10 = 50;



const int dataPin = 2;   /* DS */
const int clockPin = 3;  /* SHCP */
const int latchPin = 4;  /* STCP */

int pattern = 0b00000000;
int fire = 0b00000001;
int loading = 0b00000010;
int doorlight = 0b00000100;
int yard = 0b00001000;
int fire1 = 0b00010000;
int loading1 = 0b00100000;
int doorlight1 = 0b01000000;
int yard1 = 0b10000000;


void setup() {

  Serial.begin(9600);
  pinMode(LDR_PIN, INPUT);

  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);




  pattern = 0b11111111;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(1000);
  pattern = ~pattern;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  }

  
void loop() {

int analogValue = analogRead(A1);
  float voltage = analogValue / 1024. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

if (lux >= 500) {
  pattern = 0b00000000;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
}

if (lux <= 500){
pattern = fire + fire1 ;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);

 } else{
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, LOW);
}


if (lux <= 400){
pattern = loading + loading1;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);

 } else{
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, LOW);
}

if (lux <= 300){
pattern = doorlight + doorlight1 ;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);

 } else{
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, LOW);
}

if (lux <= 200){
pattern = yard + yard1 ;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);

 } else{
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, LOW);
}
/*
  pattern = pattern + pattern1;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  pattern = pattern + pattern2;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(1000);

  pattern = pattern + pattern3;
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, pattern);
  digitalWrite(latchPin, HIGH);
  delay(1000);
  //pattern = ~pattern; // Invert the pattern

  */
}