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生日歌
- #include<reg52.h>
- #include<intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit SPK = P2^7;
- uchar tone_h; //高音
- uchar tone_l; //低音
- uint note = 1; //音符
- uchar beat; //節拍
- uchar code chuzhi[3][16]={ //音調對應的計數初值
- 0xff,0xff,//占0位
- 0xf8,0x8c,//低1
- 0xf9,0x5b,// 2
- 0xfa,0x15,// 3
- 0xfa,0x67,// 4
- 0xfb,0x04,// 5
- 0xfb,0x90,// 6
- 0xfc,0x0c,//低7
-
- 0xff,0xff,//占0位
- 0xfc,0x44,//中1
- 0xfc,0xac,// 2
- 0xfd,0x09,// 3
- 0xfd,0x34,// 4
- 0xfd,0x82,// 5
- 0xfd,0xc8,// 6
- 0xfe,0x06,//中7
-
- 0xff,0xff,//占0位
- 0xfe,0x22,//高1
- 0xfe,0x56,// 2
- 0xfe,0x85,// 3
- 0xfe,0x9a,// 4
- 0xfe,0xc1,// 5
- 0xfe,0xe4,// 6
- 0xff,0x03 //高7
- };
- //****** 測試曲譜 ****** 個位：音調 ，十位：低中高音 對應 0 1 2，千百位：節拍 1~16
- uint code test2[] = { 120, //曲速 暫時未用到
- 401,402,403,404,405,406,407,
- 611,612,613,614,615,616,617,
- 821,822,823,824,825,826,827,
- 0xffff //0xffff表示結尾
- };
- //****** 生日快樂 ******
- uint code test[] = { 120,
- 205,205,406,405,411,807,
- 205,205,406,405,412,811,
- 205,205,415,413,411,407,406,
- 314,114,413,411,413,812,
- 305,105,406,405,411,807,
- 305,105,406,405,412,811,
- 305,105,415,413,411,
- 407,406,314,114,413,411,412,811,410,
- 0xffff
- };
-
- void delayms(uint ms) /*ms 等于1時，延時1ms 等于2時，延時2ms，以此類推*/
- {
- uchar a,b,c; //+3
- while(ms--)
- {
- for(c=1;c>0;c--) // 1+2 = 3
- for(b=142;b>0;b--) // 1*( 1+142*2)) = 285
- for(a=2;a>0;a--); // 142*(1+2*2) = 710
- }
- }
- void delay125ms(uint pai) //延時 ？*125ms 即？個節拍
- {
- uchar a,b,c;
- while(pai--)
- {
- for(c=239;c>0;c--)
- for(b=104;b>0;b--)
- for(a=1;a>0;a--);
- }
- }
- void timer0() interrupt 1
- {
- TH0 = tone_h;
- TL0 = tone_l;
- SPK = ~SPK;
- }
- void timer_init()
- {
- EA = 1;
- ET0 = 1;
- PT0 = 1;
- TMOD = 0x11;
- TH0 = 255;
- TL0 = 255;
- }
- void main()
- {
- timer_init();
- note = 1;
-
- while(1)
- {
- if(test[note] == 0xffff)
- {
- note = 1;
- }
- if(test[note]%10 != 0) //音調不為0 【音調為0時表示不發聲，但有節拍】
- {
- tone_h = TH0 = chuzhi[test[note]%100/10][(test[note]%10)*2 ]; //音調高位 【二維數組 第1維表示低中高音，第二維表示音調】
- tone_l = TL0 = chuzhi[test[note]%100/10][(test[note]%10)*2 + 1]; //音調低位
- TR0 = 1;
- }
- delay125ms(test[note]/100); //節拍
- TR0 = 0;
- delayms(30);
- note++; //下一個音符
-
- }
-
- }
-
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