/*	Lab Trial Test 2
	 *	Name:	CHIA HOOI BOOY
    * Class:DEEC2
	 *	Date:10-July-2024
	*/ 


#define ADC_IN A5
#define ADC_REF 3.3  

char led_red = 23;
char led_red_state = LOW;

long led_red_previous_millis = 0;
int led_red_interval = 2000;

long ADC_previous_millis = 0;
int ADC_interval = 500;
int ADC_value;

void setup()
{
  // put your setup code here, to run once:
  pinMode(led_red, OUTPUT);

  Serial.begin(115200);
}

void loop() 
{
  long current_millis = millis();

  if (current_millis - led_red_previous_millis >= led_red_interval)
  {
    led_red_previous_millis = current_millis;
 
   if(led_red_state == LOW)
    led_red_state =HIGH;   
   else
    led_red_state = LOW;
   
    digitalWrite(led_red, led_red_state);
  }

  if (current_millis - ADC_previous_millis >= ADC_interval)
  {
   ADC_previous_millis = current_millis;
   ADC_value = analogRead(ADC_IN); //I use A5 (pin 33)

//Print output of ADC to Serial Monitor
  Serial.print("ADC value = "); Serial.println(ADC_value);
  }
if (ADC_value <= 1000)
 {

 digitalWrite(led_red, LOW);
 }
 else if ( (ADC_value > 1000) && (ADC_value < 3500) ) 
 {
 digitalWrite(led_red,HIGH);
 }
 else 
 {
  digitalWrite(led_red, HIGH);
  digitalWrite(led_red, led_red_state);
 }
 
}