#include "sound.h"

//按鍵個代表一音符，拉桿可控制音域

#define SPEAKER_PIN 8
#define PULL_PIN 0

const uint8_t buttonPins[] = { 12, 11, 10, 9, 7, 6, 5, 4 };
const int buttonTones[3][8] = {
  {NOTE_C3, NOTE_D3, NOTE_E3, NOTE_F3,
  NOTE_G3, NOTE_A3, NOTE_B3, NOTE_C4},
  {NOTE_C4, NOTE_D4, NOTE_E4, NOTE_F4,
  NOTE_G4, NOTE_A4, NOTE_B4, NOTE_C5},
  {NOTE_C5, NOTE_D5, NOTE_E5, NOTE_F5,
  NOTE_G5, NOTE_A5, NOTE_B5, NOTE_C6}
};
const int numTones = sizeof(buttonPins) / sizeof(buttonPins[0]);

void setup() {
  Serial.begin(115200);
  for (uint8_t i = 0; i < numTones; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  
  pinMode(SPEAKER_PIN, OUTPUT);
  pinMode(PULL_PIN, INPUT);
}

void loop() {
  int pitch = 0;
  int highlow=0;
  int val=analogRead(PULL_PIN);
  //Serial.println(val);
  if(val<=341){
    highlow=0;
  }else if(val>341&&val<=682){
    highlow=1;
  }else{highlow=2;}
  for (uint8_t i = 0; i < numTones; i++) {
    if (digitalRead(buttonPins[i]) == LOW) {
      pitch = buttonTones[highlow][i];
    }
  }
  if (pitch) {
    tone(SPEAKER_PIN, pitch);
  } else {
    noTone(SPEAKER_PIN);
  }
}