/*
Name        : Purushotham P
Date        : 19-10-2023

Description : - Set up LEDs on pin GPIO18 and GPIO5 using the wowki simulator 
              - Turn pins GPIO18 and GPIO5 into PWM pins
              - Gradually Increase brightness on these LEDs from zero to max voltage over 5 seconds (20% brightness after 1 second, 40% brightness after 2 seconds, and so on). Both pins should have equal brightness at all times
              - Turn off LEDs for 2 seconds
              - Increase to full brightness over 1 second (50% brightness after 0.5 second)
              - Repeat steps 3-5 four times
              - Permanently turn off


*/

const int led_pin1 = 18;// Define the pin number for the first LED (GPIO18)
const int led_pin2 = 5; // Define the pin number for the first LED (GPIO5)
int repeations = 1; // Initialize a counter for repetitions



void setup() {
  // put your setup code here, to run once:
  pinMode(led_pin1,OUTPUT); // Setting the first LED pin as OUTPUT
  pinMode(led_pin2,OUTPUT);  // Setting the second LED pin as OUTPUT
  
  
}

void loop() {
  // put your main code here, to run repeatedly:
  
  while(repeations < 5)// a loop runs for 4 times 
  {
    for(int brightness=0; brightness<=255; brightness += 51)
    {
      analogWrite(led_pin1,brightness);//setting brightness for led1
      analogWrite(led_pin2,brightness);//setting brighness for led2
      delay(1000); //setting delay for one second
    }
    analogWrite(led_pin1,0); //set the brightness to 0 for led1
    analogWrite(led_pin2,0);//set the brightness to 0 for led2
    delay(2000);//delay 2 seconds

    analogWrite(led_pin1,255);//set led1 to full brightness
    analogWrite(led_pin2,255);//set led2 to full brightness
    delay(1000);
    analogWrite(led_pin1,127);//set led1 to half brightness
    analogWrite(led_pin2,127);//set led1 to half brightness
    delay(500); // dealy of 0.5 seconds
    repeations++; // incriment of repeations
  }
  // at end finally both leds set to off permanently
  analogWrite(led_pin1,0);
  analogWrite(led_pin2,0);


}