// Sound Test ===================
#include <avr/io.h>
#include <util/delay.h>
// pitch
#define Do   0
#define DoS  1
#define Re   2
#define ReS  3
#define Mi   4
#define Fa   5
#define FaS  6
#define Sol  7
#define SolS 8
#define La   9
#define LaS  10
#define Ti   11

int ocr1a[7][12]={
    {30577,28860,27240,25711,24268,22906,21620,20407,19261,18180,17160,16197},
    {15288,14429,13619,12855,12133,11452,10809,10203, 9630, 9089, 8579,64791},
    {61155,57722,54482,51424,48538,45814,43242,40815,38524,36362,34321,32395},
    {30577,28860,27240,25711,24268,22906,21620,20407,19261,18180,17160,16197},
    {15288,14429,13619,12855,12133,11452,10809,10203, 9630, 9089, 8579, 8098},
    { 7643, 7214, 6809, 6427, 6066, 5725, 5404, 5101, 4814, 4544, 4289, 4048},
    { 3606, 3404, 3213, 3032, 2862, 2701, 2550, 2406, 2271, 2144, 2023, 1910}
// , 1802, 1701, 1606, 1515, 1430
};
//
int cnt=0;
// 
void sound(int octave, int pitch){
    if(octave>6)octave=6;
    if(pitch>11)pitch=11;
    TCCR1B&=~7; if((octave*12+pitch)<23)TCCR1B|=2; else TCCR1B|=1;
    OCR1A=ocr1a[octave][pitch]; 
    cnt=0;
}
int main(void){
    DDRB=0x20;  //포트 B.5 펄스출력
    PORTA=0xFF; //스위치 포트 내부 풀업 저항 사용
    TCCR1A=0x40; TCCR1B=8; TCCR1C=0x80; OCR1A=0;
    while(1){
        if(!(PINA&0x01))sound(4, Do);
        if(!(PINA&0x02))sound(4, Re);
        if(!(PINA&0x04))sound(4, Mi);
        if(!(PINA&0x08))sound(4, Fa);
        if(!(PINA&0x10))sound(4,Sol);
        if(!(PINA&0x20))sound(4, La); // 440Hz
        if(!(PINA&0x40))sound(4, Ti);
        if(!(PINA&0x80))sound(5, Do);
        if(PINA==0xFF){ _delay_ms(10); if(++cnt>200)TCCR1B=8; } // 2초이상 입력 없으면 off
    }
}