# 創客主線任務：Arduino
12/25(三) 這邊提供code給大家參考
希望大家可以先自己練習看看，寫不出來再比對這邊的code
## Button

int led = 12; // LED腳位 
int button = 2; // 按鈕腳位
void setup() {
  pinMode(button, INPUT); // 設定輸入腳位
  pinMode(led, OUTPUT); // 設定輸出腳位
}

void loop() {
  int state = digitalRead(button); // 讀取按鈕狀態
  digitalWrite(led, state); // 狀態為1時，設置高電壓，否則設置低電壓
}

## LED

int led = 13; //建立 LED 控制變量void setup() { 
   //準備 PIN 引腳輸出文件
   pinMode(led, OUTPUT); 
  } 
void loop() { 
    //設定為高電壓
    digitalWrite(led, HIGH); 
    //等待 1000 毫秒
    delay(1000); 
    //設定為低電壓
    digitalWrite(led, LOW);
    //等待 1000 毫秒  
    delay(1000);
 }

## HF-06 藍牙模組
進入AT模式(壓著HC-05的按鈕進入) 在序列附輸入AT，如果回傳OK就是進入AT了
- AT+NAME? 可以查名字
- AT+PSWD? 可以查配對碼
- AT+UART? 可以查鮑率
- AT+NAME=你要設的名稱 可以改名字
- AT+PSWD=配對碼 可以設定配對碼
- AT+UART=鮑率,停止位元,同位位元 可以設定鮑率

#include <SoftwareSerial.h>
SoftwareSerial BT(10, 11); //(接收腳,傳送腳)
char val;
void setup(){
  // put your setup code here, to run once:
  Serial.begin(38400);
  Serial.println("BT is ready");
  BT.begin(38400);
}
void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available()){
    val = Serial.read();
    BT.print(val);
  }
  if (BT.available()){
    val = BT.read();
    Serial.print(val);
  }
}

## 專案

#include <SoftwareSerial.h>

SoftwareSerial bluetooth(10, 11);  // 定義藍芽模組的軟體串口

#define  a3f    208     // 208 Hz
#define  b3f    233     // 233 Hz
#define  b3     247     // 247 Hz
#define  c4     261     // 261 Hz MIDDLE C
#define  c4s    277     // 277 Hz
#define  e4f    311     // 311 Hz    
#define  f4     349     // 349 Hz 
#define  a4f    415     // 415 Hz  
#define  b4f    466     // 466 Hz 
#define  b4     493     //  493 Hz 
#define  c5     523     // 523 Hz 
#define  c5s    554     // 554  Hz
#define  e5f    622     // 622 Hz  
#define  f5     698     // 698 Hz 
#define  f5s    740     // 740 Hz
#define  a5f    831     // 831 Hz 
#define  rest    -1

#define NOTE_C4  262
#define NOTE_D4  294
#define NOTE_E4  330
#define NOTE_F4  349
#define NOTE_G4  392
#define NOTE_A4  440
#define NOTE_B4  494

#define LED_C 2
#define LED_D 3
#define LED_E 4
#define LED_F 5
#define LED_G 6
#define LED_A 7
#define LED_B 8

int piezo = 9; // Connect your piezo buzzer to this pin or change  it to match your circuit!
int led = LED_BUILTIN; 

volatile int beatlength  = 135; // determines tempo
float beatseparationconstant = 0.3;

int threshold;

int song1_chorus_melody[] =
{ b4f, b4f, a4f, a4f,
  f5, f5, e5f, b4f, b4f, a4f, a4f, e5f, e5f, c5s, c5, b4f,
  c5s, c5s, c5s, c5s,
  c5s, e5f, c5, b4f, a4f, a4f, a4f, e5f, c5s,
  b4f, b4f, a4f, a4f,
  f5,  f5, e5f, b4f, b4f, a4f, a4f, a5f, c5, c5s, c5, b4f,
  c5s, c5s, c5s, c5s,
  c5s, e5f, c5, b4f, a4f, rest, a4f, e5f, c5s, rest
};

int song1_chorus_rhythmn[]  =
{ 1, 1, 1, 1,
  3, 3, 6, 1, 1, 1, 1, 3, 3, 3, 1, 2,
  1, 1, 1, 1,
  3, 3, 3, 1, 2, 2, 2, 4, 8,
  1, 1, 1, 1,
  3, 3, 6, 1, 1, 1, 1, 3, 3, 3,  1, 2,
  1, 1, 1, 1,
  3, 3, 3, 1, 2, 2, 2, 4, 8, 4
};

const char*  lyrics_chorus[] =
{ "Never ", "", "gonna ", "", "give ", "you ",  "up\
\
",
  "Never ", "", "gonna ", "", "let ", "you ", "down",  "", "\
\
",
  "Never ", "", "gonna ", "", "run ", "around ",  "", "", "", "and ", "desert ", "", "you\
\
",
  "Never ", "",  "gonna ", "", "make ", "you ", "cry\
\
",
  "Never ", "", "gonna  ", "", "say ", "goodbye ", "", "", "\
\
",
  "Never ", "",  "gonna ", "", "tell ", "a ", "lie ", "", "", "and ", "hurt ",  "you\
\
"
};
void setup() {
  Serial.begin(9600);
  bluetooth.begin(38400);

  pinMode(LED_C, OUTPUT);
  pinMode(LED_D, OUTPUT);
  pinMode(LED_E, OUTPUT);
  pinMode(LED_F, OUTPUT);
  pinMode(LED_G, OUTPUT);
  pinMode(LED_A, OUTPUT);
  pinMode(LED_B, OUTPUT);
}

void loop() {
  if (bluetooth.available()) {
    char note = bluetooth.read();
    switch (note) {
      case 'c':
        tone(9,NOTE_C4, 500);
        digitalWrite(LED_C, HIGH);
        delay(500);
        digitalWrite(LED_C, LOW);
        break;
      case 'd':
        tone(9,NOTE_D4, 500);
        digitalWrite(LED_D, HIGH);
        delay(500);
        digitalWrite(LED_D, LOW);
        break;
      case 'e':
        tone(9,NOTE_E4, 500);
        digitalWrite(LED_E, HIGH);
        delay(500);
        digitalWrite(LED_E, LOW);
        break;
      case 'f':
        tone(9,NOTE_F4, 500);
        digitalWrite(LED_F, HIGH);
        delay(500);
        digitalWrite(LED_F, LOW);
        break;
      case 'g':
        tone(9,NOTE_G4, 500);
        digitalWrite(LED_G, HIGH);
        delay(500);
        digitalWrite(LED_G, LOW);
        break;
      case 'a':
        tone(9,NOTE_A4, 500);
        digitalWrite(LED_A, HIGH);
        delay(500);
        digitalWrite(LED_A, LOW);
        break;
      case 'b':
        tone(9,NOTE_B4, 500);
        digitalWrite(LED_B, HIGH);
        delay(500);
        digitalWrite(LED_B, LOW);
        break;
      case 'F':
        tone(9,NOTE_B4, 500);
        delay(500);
        tone(9,NOTE_G4, 500);
        delay(500);
        tone(9,NOTE_D4, 500);
        delay(500);
        tone(9,NOTE_G4, 500);
        delay(500);
        tone(9,NOTE_A4, 500);
        delay(500);
        tone(9,NOTE_D4*2, 1000);
        delay(1000);
        tone(9,NOTE_A4/2, 500);
        delay(500);
        tone(9,NOTE_B4/2, 500);
        delay(500);
        tone(9,NOTE_A4/2, 500);
        delay(500);
        rick();
        // tone(9,NOTE_D4/2, 500);
        // delay(500);
        // tone(9,NOTE_G4/2, 1500);
        // delay(1500);
        break;
      default:
        break;
    }
  }
}

void  rick() {
  int notelength;
  int a = 0, b = 0, c = 0;
  while(a < 1){
    // chorus
    notelength = beatlength * song1_chorus_rhythmn[b];
    if  (song1_chorus_melody[b] > 0) {
      digitalWrite(led, HIGH);
      bluetooth.print(lyrics_chorus[c]);
      tone(piezo, song1_chorus_melody[b], notelength);
      delay(notelength);
      c++;
    }
    b++;
    if (b >= sizeof(song1_chorus_melody) / sizeof(int)) {
      Serial.println("");
      a++;
    }
  }
}