#include <TaskScheduler.h>
// Include the TaskScheduler library for Scheduling Tasks

// TaskScheduler instance
Scheduler ts;
// Create an instance of the scheduler to manage tasks

// Variables
int threshold = 512;
// Define a threshold value for comparing the analog input

// Task functions
void blinkLED() {
    int value = analogRead(A0);
    if (value > threshold) {
        // If the analog value exceeds the threshold
        digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
        // Toggle the state of the built-in LED (ON to OFF or vice versa)
    }
}

void readAnalog() {
    int value = analogRead(A0);
    // Read the analog value from pin A0
    Serial.print("Analog value: ");
    // Print a label for the analog value
    Serial.println(value);
    // Output the analog value to the serial monitor
}

void pwmLED() {
    static int brightness = 0;
    // Keep track of the current brightness level
    static int increment = 10;
    // Define the step size for increasing or decreasing brightness

    brightness += increment;
    // Update the brightness by adding the increment

    if (brightness >= 255 || brightness <= 0) increment = -increment;
    // Reverse the direction of brightness adjustment if it reaches maximum (255) or minimum (0)

    analogWrite(9, brightness);
    // Apply the brightness value to pin 9 using PWM
}

// Define tasks
Task tBlink(500, TASK_FOREVER, &blinkLED, &ts);
// Task to blink the LED every 500 milliseconds (only if the analog value exceeds the threshold)
// Parameters:
// 500: Task interval in milliseconds
// TASK_FOREVER: Run this task forever
// &blinkLED: Function to execute
// &ts: Associated schedular instance

Task tReadAnalog(1000, TASK_FOREVER, &readAnalog, &ts);
// Task to read the analog value every 1000 milliseconds
// Parameters:
// 1000: Task interval in milliseconds
// TASK_FOREVER: Run this task forever
// &readAnalog: Function to execute
// &ts: Associated schedular instance

Task tPWM(100, 10, &pwmLED, &ts);
// Task to adjust LED brightness using PWM every 100 milliseconds
// Will run 10 times per cycle before stopping
// Parameters:
// - 100: Task interval in milliseconds
// - 10: Number of times to run this task before stopping
// - &pwmLED: Function to execute
// - &ts: Associated schedular instance

void setup() {
    pinMode(LED_BUILTIN, OUTPUT);
    // Set the built-in LED pin as an output

    pinMode(9, OUTPUT);
    // Set pin 9 as an output for PWM control

    Serial.begin(9600);
    // Initialize serial communication at 9600 baud rate

    // Enable tasks
    tBlink.enable();
    // Enable the blinking task
    tReadAnalog.enable();
    // Enable the analog reading task
    tPWM.enable();
    // Enable the PWM brightness adjustment task
}

void loop() {
    ts.execute();
    // Execute the tasks managed by the scheduler
}