#include <reg52.h>
sbit SPK = P1 ^ 2; //定義喇叭接口
sbit KEY = P3 ^ 3; //設置獨立按鍵INT1，按下按鍵時切換歌曲
sbit LED = P1 ^ 7; //用于切換歌曲的顯示，當LED = 1時播放鈴兒響叮當，否則播放Spider Dance
int Timer0_H, Timer0_L, Time; //定義定時器變量和時間變量
code unsigned char MUSIC1[] = { //歌曲“鈴兒響叮當”的樂譜，每個音由3個變量構成，前兩個變量用來確定音樂頻率，第三個變量確定持續時間
3,2,2,3,2,2, 3,2,4, 3,2,2,3,2,2, 3,2,4,
3,2,2,5,2,2, 1,2,3,2,2,1, 3,2,8,
4,2,2,4,2,2, 4,2,2,4,2,2, 4,2,2,3,2,2, 3,2,2,3,2,2,
5,2,2,5,2,2, 4,2,2,2,2,2, 1,2,4, 1,3,4, 0,0,0
};
code unsigned char MUSIC2[] = { //歌曲“Spider Dance”的樂譜，如果前兩個變量為（0，0）時則為空拍
6,3,4, 3,3,4, 1,3,4, 6,2,4,
0,0,2, 2,3,2, 2,3,2, 0,0,4, 2,3,2, 1,3,2, 5,2,2, 6,2,2,
0,0,2, 3,3,2, 2,3,2, 1,3,2, 2,3,2, 3,3,2, 5,2,2, 6,2,2,
1,3,2, 6,2,2, 5,2,2, 6,3,2, 0,0,2, 5,3,2, 3,3,1, 2,3,1, 1,3,2,
6,2,4, 4,2,4, 7,2,4, 4,2,4,
1,3,4, 4,2,4, 2,3,8,
3,3,4, 2,3,4, 6,3,4, 3,3,4,
5,3,4, 4,3,4, 3,3,4, 0,0,4,
6,3,2, 3,4,2, 2,4,2, 3,4,2, 6,3,2, 3,4,2, 2,4,2, 3,4,2,
3,3,2, 2,4,2, 2,4,2, 2,4,2, 3,3,2, 3,4,2, 7,3,2, 2,4,2,
6,3,2, 3,4,2, 2,4,2, 3,4,2, 7,3,2, 3,4,2, 2,4,2, 3,4,2,
1,4,2, 3,4,2, 2,4,2, 3,4,2, 2,4,2, 4,4,2, 3,4,2, 4,4,2,
4,3,2, 1,4,2, 7,3,2, 1,4,2, 4,3,2, 2,4,2, 1,4,2, 2,4,2,
4,3,2, 3,4,2, 2,4,2, 3,4,2, 4,3,2, 4,4,2, 3,4,2, 4,4,2, 0,0,0
};
code unsigned char FREQH[]= { //頻率表前八位，第0行頻率為低兩個8度的音，第1行頻率為低一個8度的音，第2行為正常音，第3行為高8度的音
//（抱歉，樂理基礎沒學好，音的標準說法忘了咋說了，懂意思就好）
// 比如說正常音la，持續時間為2，那就是（6，2，2）
0xF2,0XF3,0xF5,0xF5,0XF6,0XF7,0XF8,
0xF9,0XF9,0XFA,0XFA,0XFB,0XFB,0XFC,0XFC,
0xFC,0XFD,0XFD,0XFD,0XFD,0XFE,
0xFE,0XFE,0XFE,0XFE,0XFE,0XFE,0XFF
};
code unsigned char FREQL[]= { //頻率表后八位
0x42,0xC1,0x17,0xB6,0xD0,0xD1,0xB6,
0x21,0xE1,0x8C,0xD8,0x68,0xE9,0x5B,0x8F,
0xEE,0x44,0x6B,0xB4,0xF4,0x2D,
0x47,0x77,0xA2,0xB6,0xDA,0xFA,0x16
};
void DelayUs2x(unsigned char t) //延遲函數
{
while (--t)
{
}
}
void DelayMs(unsigned char t) //延遲時間函數，略微修改，時間不準
{
while (--t)
{
DelayUs2x(245);
}
}
void delay(unsigned char t) //延遲時間函數
{
unsigned char i;
for (i = 0; i < t; i++)
DelayMs(125);
TR0 = 0;
}
void Init_Timer0(void) //定時器初始化函數
{
TMOD |= 0x01; //模式1，16位定時器/計數器
EA = 1; //總中斷打開
ET0 = 1; //定時器中斷打開
}
void TIM0_ISR() interrupt 1 //定時器中斷函數，用于讀取音符頻率值，產生對應的音符
{
TR0 = 0; //定時器暫停
SPK = !SPK; //喇叭反轉
TH0 = Timer0_H; //重置定時
TL0 = Timer0_L;
TR0 = 1; //定時器開始
}
void Song()
{
if (Timer0_H == -1 && Timer0_L == -1) //空拍判斷，喇叭不發聲
{
delay(Time);
}
else
{
TH0 = Timer0_H; //重置定時
TL0 = Timer0_L;
TR0 = 1;
delay(Time);
}
}
void main(void)
{
unsigned char k, i;
Init_Timer0();
KEY = 1;
LED = 1;
while (1)
{
i = 0;
if (LED) //播放“鈴兒響叮當”
{
while (i < 76) //這個數字是MUSIC數組里的變量數
{
k = MUSIC1[i] + 7 * MUSIC1[i + 1] - 1;//頻率位置，用兩個變量進行判斷
Timer0_H = FREQH[k];// 獲取頻率高八位
Timer0_L = FREQL[k];// 獲取頻率低八位
Time = MUSIC1[i + 2];// 獲取持續時間
i += 3;
Song();
if (!KEY) //判斷獨立按鍵按下
{
while (!KEY) //判斷按鍵釋放
{ }
LED = !LED; //切歌
break;
}
}
}
else
{
while (i < 280) //播放“Spider Dance”
{
k = MUSIC2[i] + 7 * MUSIC2[i + 1] - 1;
Timer0_H = FREQH[k];
Timer0_L = FREQL[k];
Time = MUSIC2[i + 2];
i += 3;
Song();
if (!KEY)
{
while (!KEY)
{ }
LED = !LED;
break;
}
}
}
}
}
錯誤： Build target 'Target 1'
compiling aaaaa.c...
AAAAA.C(33): error C141: syntax error near ';'
AAAAA.C(34): error C141: syntax error near ';'
Target not created |
