const int ledPin = 13;
const int pwmPin = 9;
const int adcPin = A0;

String inputString = "";     
bool stringComplete = false;  

void setup() {
  Serial.begin(115200);       
  pinMode(ledPin, OUTPUT);
  pinMode(pwmPin, OUTPUT);
  Serial.println("CLI UART Введите команду.");
}

void loop() {
  if (stringComplete) {
    handleCommand(inputString);
    inputString = "";
    stringComplete = false;
  }
}

void serialEvent() {
  while (Serial.available()) {
    char inChar = (char)Serial.read();
    if (inChar == '\n') {  
      stringComplete = true;
    } else if (inChar != '\r') { 
      inputString += inChar;
    }
  }
}

// Обработка команд
void handleCommand(String cmd) {
  cmd.trim();
  cmd.toLowerCase();

  if (cmd == "led on") {
    digitalWrite(ledPin, HIGH);
    Serial.println("LED turned ON");
  } else if (cmd == "led off") {
    digitalWrite(ledPin, LOW);
    Serial.println("LED turned OFF");
  } else if (cmd.startsWith("set pwm ")) {
    int value = cmd.substring(8).toInt();
    if (value < 0) value = 0;
    if (value > 255) value = 255;
    analogWrite(pwmPin, value);
    Serial.print("PWM set to ");
    Serial.println(value);
  } else if (cmd == "get adc") {
    int val = analogRead(adcPin);
    Serial.print("ADC value: ");
    Serial.println(val);
  }  else {
    Serial.println("Неизвестная команда");
  }
}