const int redpin=11;
const int greenpin =10;
const int bluepin =9;
int d = 500;
void setup() {
  
  pinMode(redpin, OUTPUT);
  pinMode(greenpin, OUTPUT);
  pinMode(bluepin, OUTPUT);

  analogWrite(redpin,0);
  analogWrite(greenpin,0);
  analogWrite(bluepin,0);

  Serial.begin(9600);
}

void loop() {
  Serial.println("Enter a color (r = Red, g = Green, b = Blue, c = Cyan, m = Magenta, y = Yellow): ");

  while (!Serial.available());

  String input = Serial.readStringUntil('\n'); // Read the full input line
  input.trim(); // Remove any extra whitespace, newline or carriage return

  char color = input.charAt(0); // Extract the first character

  // Set the LED color based on user input
  switch (color) {
    case 'r': setColor(255, 0, 0); break;    // Red
    case 'g': setColor(0, 255, 0); break;    // Green
    case 'b': setColor(0, 0, 255); break;    // Blue
    case 'c': setColor(0, 255, 255); break;  // Cyan
    case 'm': setColor(255, 0, 255); break;  // Magenta
    case 'y': setColor(255, 255, 0); break;  // Yellow
    default: Serial.println("Invalid color."); break;
  }

  delay(d); // Small delay before the next input
}

void setColor(int redValue, int greenValue, int blueValue) {
  analogWrite(redpin, redValue);
  analogWrite(greenpin, greenValue);
  analogWrite(bluepin, blueValue);
}