51单片机音乐播放器c语言,51单片机之简单的音乐播放器
/*************************************************************
音樂播放器：
按鍵?0?-?9?對應(yīng)最多10首樂曲，當(dāng)一首樂曲播放完畢后，
響應(yīng)按鍵的動作去播放相應(yīng)的音樂，另外，右、下這兩個按鍵
對應(yīng)著下一首，左上這兩個按鍵對應(yīng)著上一首。
作者：寧靜致遠(yuǎn)
*************************************************************/
#include
#include
#define?RldTmr(fr)?65536?-?(11059200?/?12)?/?((fr)?<
#define?FuDian(n)?((n)?<
typedef?unsigned?char?uchar;
typedef?unsigned?int?uint;
typedef?unsigned?long?ulong;
typedef?struct?music?{
char?*?pNote;
char?*?pDur;
}?Music;
sbit?BUZZ?=?P1^6;
sbit?KEY_OUT_3?=?P2^0;
sbit?KEY_OUT_2?=?P2^1;
sbit?KEY_OUT_1?=?P2^2;
sbit?KEY_OUT_0?=?P2^3;
sbit?KEY_IN_0?=?P2^4;
sbit?KEY_IN_1?=?P2^5;
sbit?KEY_IN_2?=?P2^6;
sbit?KEY_IN_3?=?P2^7;
uint?code?noteFreq[]?=?{????//中音?1-7?和高音?1-7對應(yīng)的頻率列表?低音
523,?587,?659,?698,?784,?880,?988,
1047,?1175,?1319,?1397,?1568,?1760,?1976,
//261,?293,?329,?349,?392,?440,?494
};
uint?code?tmrRld[]?=?{??????//中音?1-7?和高音?1-7對應(yīng)的定時器重載值
RldTmr(523),?RldTmr(587),?RldTmr(659),?RldTmr(698),?RldTmr(784),?RldTmr(880),?RldTmr(988),
RldTmr(1047),?RldTmr(1175),?RldTmr(1319),?RldTmr(1397),?RldTmr(1568),?RldTmr(1760),?RldTmr(1976),
//RldTmr(261),?RldTmr(293),?RldTmr(329),?RldTmr(349),?RldTmr(392),?RldTmr(440),?RldTmr(494)
};
uchar?code?keyCodeMap[4][4]?=?{?//矩陣按鍵編號到標(biāo)準(zhǔn)鍵盤鍵碼的映射表
{0x31,?0x32,?0x33,?0x26},?//數(shù)字鍵1、數(shù)字鍵2、數(shù)字鍵3、向上鍵
{0x34,?0x35,?0x36,?0x25},?//數(shù)字鍵4、數(shù)字鍵5、數(shù)字鍵6、向左鍵
{0x37,?0x38,?0x39,?0x28},?//數(shù)字鍵7、數(shù)字鍵8、數(shù)字鍵9、向下鍵
{0x30,?0x1B,?0x0D,?0x27}??//數(shù)字鍵0、ESC鍵、??回車鍵、?向右鍵
};
uchar?keyState[4][4]?=?{??//全部矩陣按鍵的當(dāng)前狀態(tài)
{1,?1,?1,?1},??{1,?1,?1,?1},??{1,?1,?1,?1},??{1,?1,?1,?1}
};
bit?enable?=?1,?tmrFlg?=?0;
uchar?T0RH?=?0XFF,?T0RL?=?0X00;
uchar?T1RH,?T1RL;
uchar?musicIdx?=?0;
uchar?musicSpeed?=?72;
uchar?nowMusic?=?0;
//bit?enKey?=?1;
uchar?code?twoTigerNote[]?=?{??????//音名
1,?2,?3,?1,
1,?2,?3,?1,
3,?4,?5,
3,?4,?5,
5,?6,?5,?4,?3,?1,
5,?6,?5,?4,?3,?1,
1,?5,?1,
1,?5,?1,
'\0'
};
uchar?code?twoTigerDuration[]?=?{???????//音名對應(yīng)的時值，4表示4分音符，8表示8分音符，16表示16分音符
4,?4,?4,?4,
4,?4,?4,?4,
4,?4,?2,
4,?4,?2,
FuDian(8),?16,?FuDian(8),?16,?4,?4,
FuDian(8),?16,?FuDian(8),?16,?4,?4,
4,?4,?2,
4,?4,?2,
'\0'
};
uchar?code?baheNote[]?=?{
5,?1,?2,?3,?4,
5,?1,?1,
6,?4,?5,?6,?7,
8,?1,?1,
4,?5,?4,?3,?2,
3,?4,?3,?2,?1,
7,?1,?2,?3,?1,
3,?2,
5,?1,?2,?3,?4,
5,?1,?1,
6,?4,?5,?6,?7,
8,?1,?1,
4,?5,?4,?3,?2,
3,?4,?3,?2,?1,
2,?3,?2,?1,?7,
1,
'\0'
};
uchar?code?baheDur[]?=?{
4,?8,?8,?8,?8,
4,?4,?4,
4,?8?,8?,8,?8,
4,?4,?4,
4,?8,?8,?8,?8,
4,?8,?8,?8,?8,
4,?8,?8,?8,?8,
4,?2,
4,?8,?8,?8,?8,
4,?4,?4,
4,?8?,8?,8,?8,
4,?4,?4,
4,?8,?8,?8,?8,
4,?8,?8,?8,?8,
4,?8,?8,?8,?8,
4,
'\0'
};
uchar?musicLen[10];
Music?musicSet[]?=?{
{twoTigerNote,?twoTigerDuration},
{baheNote,?baheDur},
};
uchar?musicNum?=?sizeof(musicSet)?/?sizeof(Music);
void?delay(uint?n);
void?playMusic(uchar?musicIdx,?uchar?speed);????//固定標(biāo)準(zhǔn)為4分音符的速度：例如speed?=?108?表示一分鐘掃過108個4分音符
void?setTmr1(uint?ms);
void?keyScan();
void?keyAction();
void?keyDriver();
void?initMusicInfo();
void?main()?{
initMusicInfo();
EA?=?1;
TMOD?=?0x01;
TH0?=?T0RH;
TL0?=?T0RL;
ET0?=?1;
PT0?=?1;??//重要！！！設(shè)置T0搶占優(yōu)先級
//TR0?=?1;
setTmr1(10);
TH1?=?T1RH;
TL1?=?T1RL;
ET1?=?1;
TR0?=?1;
TR1?=?1;
while?(1)?{
//TR0?=?1;
playMusic(musicIdx,?musicSpeed);
delay(40000u);
}
}
void?initMusicInfo()?{
uchar?i;
for?(i?=?0;?i
musicLen[i]?=?strlen(musicSet[i].pNote);
}
}
void?delay(uint?n)?{
//uint?i;
//TR1?=?1;
while?(n--)?{
keyDriver();
}
//TR1?=?0;
}
void?playMusic(uchar?musicIdx,?uchar?speed)?{
uchar?i;
uchar?idx;
uint?cnt?=?0;
uint?durationCnt?=?0;???//當(dāng)前音符的時值對應(yīng)的定時器計數(shù)
uint?soundCnt?=?0;??????//當(dāng)前音符的發(fā)聲時值對應(yīng)的計數(shù)值
char?*?musicNote?=?musicSet[musicIdx].pNote;
char?*?noteDuration?=?musicSet[musicIdx].pDur;
for?(i?=?0;?i
while?(!tmrFlg)?;
tmrFlg?=?0;
//keyDriver();?//遞歸實現(xiàn)音樂的嵌套
if?(cnt?==?0)?{
idx?=?musicNote[i]?-?1;
T0RH?=?tmrRld[idx]?>>?8;
T0RL?=?tmrRld[idx];
durationCnt?=?(ulong)240?*?(ulong)noteFreq[idx]?/?((ulong)noteDuration[i]?*?(ulong)speed);
soundCnt?=?durationCnt?-?(durationCnt?>>?2);??//當(dāng)前音符時值的前3/4發(fā)聲，后1/4靜音
enable?=?1;
cnt++;
}
else?{
if?(cnt?==?durationCnt)?{
cnt?=?0;
i++;
}
else?{
cnt++;
if?(cnt?==?soundCnt)?{
enable?=?0;
}
}
}
}
}
void?interruptTmr0()?interrupt?1?{
TH0?=?T0RH;
TL0?=?T0RL;
tmrFlg?=?1;
if?(enable)
BUZZ?=?~BUZZ;
else
BUZZ?=?1;
}
void?setTmr1(uint?ms)?{
ulong?tmp;
tmp?=?11059326?/?12;
tmp?=?tmp?*?ms?/?1000;
tmp?=?65536?-?tmp;
tmp?+=?28;
T1RL?=?tmp;
T1RH?=?tmp?>>?8;
}
void?interruptTmr1()?interrupt?3?{
TH1?=?T1RH;
TL1?=?T1RL;
//if?(enKey)
keyScan();
}
void?keyScan()?{
static?uchar?i?=?0;
static?uchar?keyBuf[4][4]?=?{
{0xFF,?0xFF,?0xFF,?0xFF},?{0xFF,?0xFF,?0xFF,?0xFF},
{0xFF,?0xFF,?0xFF,?0xFF},?{0xFF,?0xFF,?0xFF,?0xFF}
};
uchar?j;
keyBuf[i][0]?=?(keyBuf[i][0]?<
keyBuf[i][1]?=?(keyBuf[i][1]?<
keyBuf[i][2]?=?(keyBuf[i][2]?<
keyBuf[i][3]?=?(keyBuf[i][3]?<
for?(j=0;?j<4;?j++)?{
if?(keyBuf[i][j]?==?0x00)
keyState[i][j]?=?0;
else?if?(keyBuf[i][j]?==?0xFF)
keyState[i][j]?=?1;
}
switch?(i)?{
case?0:?KEY_OUT_0?=?1;?KEY_OUT_1?=?0;?break;
case?1:?KEY_OUT_1?=?1;?KEY_OUT_2?=?0;?break;
case?2:?KEY_OUT_2?=?1;?KEY_OUT_3?=?0;?break;
case?3:?KEY_OUT_3?=?1;?KEY_OUT_0?=?0;?break;
default?:?break;
}
i?=?++i?&?0x03;
}
void?keyAction(uchar?keyCode)?{
if?(keyCode?>=?0x30?&&?keyCode?<=?0x39)?{
nowMusic?=?keyCode?-?0x30;
if?(nowMusic
//TR1?=?0;
playMusic(nowMusic,?musicSpeed);
}
}
else?if?(keyCode?==?0x27?||?keyCode?==?0x28)?{
if?(nowMusic
nowMusic++;
else
nowMusic?=?0;
//TR1?=?0;
playMusic(nowMusic,?musicSpeed);
}
else?if?(keyCode?==?0x25?||?keyCode?==?0x26)?{
if?(nowMusic?>?0)
nowMusic--;
else
nowMusic?=?musicNum?-?1;
//TR1?=?0;
playMusic(nowMusic,?musicSpeed);
}
}
void?keyDriver()?{
uchar?i,?j;
static?uchar?backup[4][4]?=?{
{1,?1,?1,?1},?{1,?1,?1,?1},?{1,?1,?1,?1},?{1,?1,?1,?1}
};
//if?(enKey)
for?(i=0;?i<4;?i++)
for?(j=0;?j<4;?j++)
if?(keyState[i][j]?!=?backup[i][j])?{
if?(keyState[i][j]?==?0)?{
keyAction(keyCodeMap[i][j]);
//enKey?=?0;
}
backup[i][j]?=?keyState[i][j];
}
}
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