smart nightlight

gistfile1.c

//#include <EEPROM.h>
int LDR_Pin = A6; //analog pin 0
int PWM_Pin = 4;

void setup(){
  //Serial.begin(9600);
  pinMode(PWM_Pin, OUTPUT);
  //EEPROM.write(0, 250);
  //EEPROM.write(1, 15);
}

//float Stored_Light_On = EEPROM.read(0);
unsigned long maintime;
unsigned long time;
float AVG_Light_On = 340;
float AVG_Light_Off = 10;
float Light_On_Check;
float Light_Off_Check;
float AVG_Light_Diff = ((AVG_Light_On - AVG_Light_Off) / 1500) * .50;

void loop(){
  float LDRReading = analogRead(LDR_Pin);
  float LDRReading_Low = LDRReading;
  float LDRReading_High = LDRReading;
  float Orig_LDRReading = LDRReading * 1.1;
  maintime = millis() + 1410;
  while ( millis() < maintime ) {
    delay(20);
    float LDRReading = analogRead(LDR_Pin);
    if(LDRReading < LDRReading_Low){
      LDRReading_Low = LDRReading;
    }else if(LDRReading > LDRReading_High){
      LDRReading_High = LDRReading;
    }
    
    float Big_LDRReading_Offset = LDRReading_Low * 1.6;
    if(LDRReading_High > Big_LDRReading_Offset){
      
    }
    
    float Light_Diff = (LDRReading_High - LDRReading_Low) / 1500;
    if(Light_Diff > 0 && Orig_LDRReading > LDRReading && AVG_Light_Diff < Light_Diff){
      TurnOn();
      break;
     }

  }
  
  float LDRReading_Offset = LDRReading_Low * 1.1;
  float LDRReading_Diff = LDRReading_High - LDRReading_Low;
  if(LDRReading_Diff > 0 && LDRReading_Offset > LDRReading_High){ //means the value of light hasn't change more than 10% in 1.5 seconds
    float tmp_AVG_LDRReading = (LDRReading_High + LDRReading_Low) / 2;
    Serial.println("tmp_avg");
    Serial.println(tmp_AVG_LDRReading);
    //add some code to an inverse of this if statement (runs when we get both low, and high), so we know if the light level is low or high 

  }

}

void TurnOn(){//MOVE THE LIGHT AND READ THE NEW VALUE ON SERIAL
  float LDRReading_Before = analogRead(LDR_Pin);
  //Serial.println(LDRReading_Before);
  digitalWrite(PWM_Pin, HIGH);
  
  float Light_BreakPoint = AVG_Light_On * 0.83;
  
  time = millis() + 300000;
  unsigned long start_time = millis();

  while(millis() < time){
    delay(20);
    float three_seconds = millis() - start_time / 3000;
    if(three_seconds > 1 && three_seconds <= 1.013){
      float LDRReading_SOMETHING = analogRead(LDR_Pin);
    }
    float LDRReading_On = analogRead(LDR_Pin);
    
    if(LDRReading_On > Light_BreakPoint){
      break;
    }

  }
  
  digitalWrite(PWM_Pin, LOW);
  delay(700);
}