/****************************************************************
Project Title:    Motor Speed and Direction Control with LEDs
Target Hardware:  ESP32
Summary: This program controls motor speed and direction using LEDs
         as indicators. Slide switches control direction, while PWM
         adjusts LED brightness to simulate speed.
****************************************************************/

// Define pin numbers
#define SPEED1_PIN 13       // GPIO13 for Motor 1 speed control (Green LED)
#define SPEED2_PIN 12       // GPIO12 for Motor 2 speed control (Red LED)
#define DIR1_PIN 21         // GPIO21 for Motor 1 direction (Blue LED)
#define DIR2_PIN 22         // GPIO22 for Motor 2 direction (Yellow LED)
#define SW_DIR1 23          // GPIO23 for Motor 1 direction switch
#define SW_DIR2 19          // GPIO19 for Motor 2 direction switch

// Define PWM parameters
#define PWM_FREQ 1000       // PWM frequency in Hz
#define PWM_RESOLUTION 10   // PWM resolution (10 bits: 0-1023)
#define PWM_CHANNEL1 0      // PWM channel for Motor 1 speed
#define PWM_CHANNEL2 1      // PWM channel for Motor 2 speed

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);
  Serial.println("Motor Speed and Direction Control Simulation Started!");

  // Attach PWM to pins for speed control
  ledcAttachChannel(SPEED1_PIN, PWM_FREQ,PWM_RESOLUTION, PWM_CHANNEL1);
  ledcAttachChannel(SPEED2_PIN, PWM_FREQ,PWM_RESOLUTION, PWM_CHANNEL2);
  // ledcAttach(SPEED2_PIN, PWM_CHANNEL2, PWM_FREQ, PWM_RESOLUTION);

  // Configure switch and direction pins as inputs or outputs
  pinMode(SW_DIR1, INPUT);
  pinMode(SW_DIR2, INPUT);
  pinMode(DIR1_PIN, OUTPUT);
  pinMode(DIR2_PIN, OUTPUT);
}

void loop() {
  // Read switch states
  bool direction1 = digitalRead(SW_DIR1);
  bool direction2 = digitalRead(SW_DIR2);

  // Set direction LEDs
  digitalWrite(DIR1_PIN, direction1);
  digitalWrite(DIR2_PIN, direction2);

  // Simulate speed by adjusting PWM brightness
  int speed1 = direction1 ? 512 : 256; // Example PWM values for direction
  int speed2 = direction2 ? 512 : 256;

  ledcWrite(PWM_CHANNEL1, speed1);
  ledcWrite(PWM_CHANNEL2, speed2);

  // Print status to serial monitor
  Serial.print("Motor 1 - Direction: ");
  Serial.print(direction1 ? "Forward" : "Reverse");
  Serial.print(", Speed: ");
  Serial.print(speed1);

  Serial.print(" | Motor 2 - Direction: ");
  Serial.print(direction2 ? "Forward" : "Reverse");
  Serial.print(", Speed: ");
  Serial.println(speed2);

  delay(500); // Delay to allow for readable output in the serial monitor
}