#include <Stepper.h>
#include <SevSeg.h>
#define PITCH_MIN  262
#define PITCH_MAX  1047

int meter;
int barGraph;
int speed;
int pitch;

Stepper stepper(360, 8, 9, 10, 11);
SevSeg segment;

void setup()
{
  // put your setup code here, to run once:
  stepper.setSpeed(10);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(44, OUTPUT);
  pinMode(45, OUTPUT);
  pinMode(46, OUTPUT);
  pinMode(47, OUTPUT);
  pinMode(48, OUTPUT);
  pinMode(49, OUTPUT);
  pinMode(50, OUTPUT);
  pinMode(51, OUTPUT);
  byte numDigits = 2;
  byte digitPins[] = {7, 6};
  byte segmentPins[] = {44, 45, 46, 47, 48, 49, 50, 51};
  byte hardwareConfig = COMMON_ANODE;
  bool resistorsOnSegments = true;
  segment.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  segment.setBrightness(90);
}

void loop()
{
  meter = analogRead(0);
  meter = map(meter, 0, 1023, 0, 10);
  speed = map(meter, 0, 10, 0, 100);
  pitch = map(meter, 0, 10, PITCH_MIN, PITCH_MAX);

  segment.setNumber(meter, 0);
  digitalWrite(41, meter > 0? HIGH : LOW);
  digitalWrite(39, meter > 1? HIGH : LOW);
  digitalWrite(37, meter > 2? HIGH : LOW);
  digitalWrite(35, meter > 3? HIGH : LOW);
  digitalWrite(33, meter > 4? HIGH : LOW);
  digitalWrite(31, meter > 5? HIGH : LOW);
  digitalWrite(29, meter > 6? HIGH : LOW);
  digitalWrite(27, meter > 7? HIGH : LOW);
  digitalWrite(25, meter > 8? HIGH : LOW);
  digitalWrite(23, meter > 9? HIGH : LOW);
  stepper.setSpeed(speed);
  if(speed != 0)
  {
    stepper.step(1);
  }
  if(meter == 0)
  {
    noTone(12);
  }
  else
  {
    tone(12, pitch);
  }

  segment.refreshDisplay();
}