#include <SoftwareSerial.h>

SoftwareSerial mySerial(1, 0);

const int ledPin = 7;
const int buttonPin = 10;
const int potPin = A1;

enum States {
  SINON,
  SINOFF
};

enum States state;

int buttonState = 0;

int safe = 0;

void setup() {
  
  CLKPR = (1 << CLKPCE);
  CLKPR = (0 << CLKPS3) | (0 << CLKPS2) | (0 << CLKPS1) | (0 << CLKPS0);
pinMode (buttonPin, INPUT);
pinMode (potPin, INPUT);
 mySerial.begin(9600);
state = SINOFF;
buttonState == LOW;
}

void loop() {
  if (buttonState == HIGH) {
    state = SINON;
  } else {
    state = SINOFF;
  }

 switch (state) {
    case SINOFF:
     digitalWrite(ledPin, LOW);
  mySerial.write(safe);
  delay (30);
    break;
     case SINON:
    mySerial.write(map(analogRead(potPin), 0, 1023, 0, 255));
     digitalWrite(ledPin, HIGH);
  delay (30);
  break;
    default:
    break;
  }
}