#include "music.h"
/************************************************************
播放音樂使能TIME1之前必須完成以下工作
初始化*pMusic指針，使其指向某一首音樂
初始化maxMusic，使其等于*pMusic指針指向的音樂的數據的個數
初始化音樂播放的次數playCycle
初始化OCR1A，使其對應于第一個音符
初始化第一個音符比較匹配的次數iCompaCycle
初時話iMusicCycle為1
************************************************************/


/************************************************************
Timer1比較匹配中斷處理函數
************************************************************/
interrupt [TIM1_COMPA] void Timer1CompaIsr(void)
{
	
	if (--iCompaCycle == 0)                   //比較匹配次數是否到了
	{
		if(iMusicCycle < maxMusic)           // 判斷最后一個音符是否已經被播放
		{     
			OCR1A = dataOfOCR1A[pMusic[++iMusicCycle]];        //裝入下一個音符的數據
			iCompaCycle = counter[pMusic[iMusicCycle]];        
			iCompaCycle = iCompaCycle * pMusic[++iMusicCycle];
																
			if(OCR1A == 2500)						// IF語句判斷OCR1A中是否是裝入了空音符的數據，如果是的話就把PD5釋放
			{
				TCCR1A = 0x00;
			}
			else if (TCCR1A == 0x00)     //非空音符時，如果PD5引腳已經釋放，則與OCR1連接
			{
				TCCR1A = 0x40;
			}

		}
		else if(--playCycle != 0)                              //判斷播放次數是否已經為0
		{
			OCR1A = dataOfOCR1A[pMusic[0]];                    //重新裝入第一個音符的數據
			iCompaCycle = counter[pMusic[0]] * pMusic[1];
			iMusicCycle = 1;
			 
            if(OCR1A == 2500)		// IF語句判斷OCR1A中是否是裝入了空音符的數據，如果是的話就把PD5釋放
			{
				TCCR1A = 0x00;
			}
			else if (TCCR1A == 0x00)	//非空音符時，如果PD5引腳已經釋放，則與OCR1連接
			{
				TCCR1A = 0x40;
			}

		}
		else
		{
			TCCR1B = 0x08;    //播放結束，關閉TIME1的時鐘
		}

	}
}
/************************************************************
函數MusicInit用于初始化音樂播放
************************************************************/
void MusicInit(void)
{
	DDRD.5 = 1;            //設置PD5為輸出引腳
   	PORTD.5 = 0;			//
    	TCCR1A = 0x40;		//比較匹配時觸發PD5引腳
    	TCCR1B = 0x08;		//CTC模式，先不啟動定時器
	TIMSK |= 0x10;			//開放定時器1的比較匹配功能
}
/************************************************************
函數void PlayMusic(unsigned char musicChoose, unsigned char counterChoose)
中musicChoose為選擇播放的音樂，counterChoose為播放次數
************************************************************/
void PlayMusic(unsigned char musicChoose, unsigned char counterChoose)
{
	//switch語句把選擇的音樂序號對應的音樂數據付給pMusic指針
	switch (musicChoose)
	{
	case 1:
		pMusic = music1;
		maxMusic = maxMusic1;
		break;
	
	case 2:
		pMusic = music2;
		maxMusic = maxMusic2;
		break;

	case 3:
		pMusic = music3;
		maxMusic = maxMusic3;
		break;

	case 4:
		pMusic = music4;
		maxMusic = maxMusic4;
		break;

	case 5:
		pMusic = music5;
		maxMusic = maxMusic5;
		break;

	case 6:
		pMusic = music6;
		maxMusic = maxMusic6;
		break;

	case 7:
		pMusic = music7;
		maxMusic = maxMusic7;
		break;

	case 8:
		pMusic = music8;
		maxMusic = maxMusic8;
		break;

	case 9:
		pMusic = music9;
		maxMusic = maxMusic9;
		break;

	case 10:
		pMusic = music10;
		maxMusic = maxMusic10;
		break;

	};

	playCycle = counterChoose;     //音樂播放次數賦值
	OCR1A = dataOfOCR1A[pMusic[0]];      //第一個音符賦值   
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	
	if(OCR1A == 2500)		// IF語句判斷OCR1A中是否是裝入了空音符的數據，如果是的話就把PD5釋放
	{
	        TCCR1A = 0x00;
	}
	else if (TCCR1A == 0x00)	//非空音符時，如果PD5引腳已經釋放，則與OCR1連接
	{
	        TCCR1A = 0x40;
	} 
	
	TCCR1B = 0x0A;     //開啟定時器工作
}

void PlayMusic1(unsigned char counter1)
{
	pMusic = music1;
	maxMusic = maxMusic1;
	playCycle = counter1;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic2(unsigned char counter2)
{
	pMusic = music2;
	maxMusic = maxMusic2;
	playCycle = counter2;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic3(unsigned char counter3)
{
	pMusic = music3;
	maxMusic = maxMusic3;
	playCycle = counter3;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic4(unsigned char counter4)
{
	pMusic = music4;
	maxMusic = maxMusic4;
	playCycle = counter4;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic5(unsigned char counter5)
{
	pMusic = music5;
	maxMusic = maxMusic5;
	playCycle = counter5;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic6(unsigned char counter6)
{
	pMusic = music6;
	maxMusic = maxMusic6;
	playCycle = counter6;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic7(unsigned char counter7)
{
	pMusic = music7;
	maxMusic = maxMusic7;
	playCycle = counter7;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic8(unsigned char counter8)
{
	pMusic = music8;
	maxMusic = maxMusic8;
	playCycle = counter8;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic9(unsigned char counter9)
{
	pMusic = music9;
	maxMusic = maxMusic9;
	playCycle = counter9;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}

void PlayMusic10(unsigned char counter10)
{
	pMusic = music10;
	maxMusic = maxMusic10;
	playCycle = counter10;
	OCR1A = dataOfOCR1A[pMusic[0]];
	iCompaCycle = counter[pMusic[0]] * pMusic[1];
	iMusicCycle = 1;
	TCCR1B = 0x0A;
}