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#define NUM_BUTTON 7
#define NUM_LED 6
const int buttonPin[NUM_BUTTON] =
{A0,A1,A2,A3,A4,A5,8}; // the number of the
pushbutton pin
const int ledPin[NUM_LED] = {2,3,4,5,6,7};
// the number of the LED pin
int SoundPin = 13; // ブザーを接続したピン番号
//int Note[NUM_BUTTON]={262,294,330,349,392,440,494};
int Note[NUM_BUTTON]={262/2,294/2,330/2,349/2,392/2,440/2,262*2/2};
// variables will change:
int buttonState = 0; // variable for reading the
pushbutton status
void setup() {
// 起動後、この中の内容が上から順に1回実行される
Serial.begin(9600); // シリアル通信の準備をする
while (!Serial); //
準備が終わるのを待つ
Serial.println("start"); // シリアル通信でメッセージをPCに送信
// initialize the LED pin as an output:
int i;
for(i=0;i<NUM_LED;i++)
{
pinMode(ledPin[i], OUTPUT);
}
// initialize the pushbutton pin as an input:
//pinMode(buttonPin, INPUT);
for(i=0;i<NUM_BUTTON;i++)
{
pinMode(buttonPin[i], INPUT_PULLUP);
}
}
void loop() {
int i;
bool flg=false;
for(i=0;i<NUM_BUTTON;i++)
{
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin[i]);
int j=0;
switch(i)
{
case 0:
j=5;
break;
case 1:
j=4;
break;
case 2:
j=3;
break;
case 3:
j=2;
break;
case 4:
j=1;
break;
case 5:
j=0;
break;
case 6:
j=6;
break;
default:
j=6;
break;
}
// check if the pushbutton is pressed. If it is, the buttonState is HIGH:
int oct_div=2;
if(j==6)
{
if (buttonState == false) {
tone(SoundPin,Note[j]/oct_div);
flg=true;
}
}
else
{
if (buttonState == false) {
// turn LED on:
digitalWrite(ledPin[j], HIGH);
tone(SoundPin,Note[j]/oct_div);
flg=true;
} else {
// turn LED off:
digitalWrite(ledPin[j], LOW);
}
}
}
if(flg==false){
noTone(SoundPin);
}
}
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