/* Lab Trial Test 1
 * Name: Chia Hooi Booy
 *Class: DEEC2
 * Date: :26-Jun-2024
*/

char led_red = 23;
char led_green = 18;

char led_red_state = LOW;
char led_green_state = LOW;

long led_red_previous_millis = 0;
int led_red_interval = 2000;

long led_green_previous_millis = 0;
int led_green_interval = 1000;
//this variable to store the last time
// the red led has changed store


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

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 - led_green_previous_millis >= led_green_interval)

  {
    led_green_previous_millis =current_millis;
 
    if(led_green_state == LOW)
    led_green_state =HIGH;
  

    else
    led_green_state = LOW;
   
    digitalWrite(led_green, led_green_state);

}
}