?? yinyue.c
字號:
/*****************************************************************/
//《世上只有媽媽好》51單片機C語言程序和音樂彩燈程序
//按下按鍵INT0,即sw,蜂鳴器播放音樂,
//此時P0驅動流水燈隨音樂的節拍的快慢而動
/*****************************************************************/
#include <reg51.h>
sbit speaker = P3^2; //接蜂鳴器,
sbit sw = P1^4; //sw合上后就開始放音樂,燈開始閃動,sw斷開,音樂停止,燈也同時停止閃動
unsigned char timer0h,timer0l,time,led = 1,j = 0;
unsigned char flagd = 0;
//世上只有媽媽好數據表
code unsigned char sszymmh[] = {6,2,3, 5,2,1, 3,2,2, 5,2,2, 1,3,2, 6,2,1, 5,2,1,
6,2,4, 3,2,2, 5,2,1, 6,2,1, 5,2,2, 3,2,2, 1,2,1,
6,1,1, 5,2,1, 3,2,1, 2,2,4, 2,2,3, 3,2,1, 5,2,2,
5,2,1, 6,2,1, 3,2,2, 2,2,2, 1,2,4, 5,2,3, 3,2,1,
2,2,1, 1,2,1, 6,1,1, 1,2,1, 5,1,6, 0,0,0};
// 音階頻率表 高八位
code unsigned char FREQH[]={0xF2,0xF3,0xF5,0xF5,0xF6,0xF7,0xF8,
0xF9,0xF9,0xFA,0xFA,0xFB,0xFB,0xFC,0xFC, //1,2,3,4,5,6,7,8,i
0xFC,0xFD,0xFD,0xFD,0xFD,0xFE,
0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFF } ;
// 音階頻率表 低八位
code unsigned char FREQL[]={0x42,0xC1,0x17,0xB6,0xD0,0xD1,0xB6,
0x21,0xE1,0x8C,0xD8,0x68,0xE9,0x5B,0x8F, //1,2,3,4,5,6,7,8,i
0xEE,0x44, 0x6B,0xB4,0xF4,0x2D,
0x47,0x77,0xA2,0xB6,0xDA,0xFA,0x16,};
void delay(unsigned char t)
{
unsigned char t1;
unsigned long t2;
for(t1 = 0;t1 < t;t1 ++)
for(t2 = 0;t2 < 8000;t2 ++);
TR0=0;
}
void t0int() interrupt 1
{
TR0 = 0;
TH0 = timer0h;
TL0 = timer0l;
speaker = !speaker;
TR0 = 1;
}
void song()
{
TH0 = timer0h;
TL0 = timer0l;
TR0 = 1;
delay(time);
}
void main(void)
{
unsigned char k,i;
TMOD = 1; //置T0定時工作方式1
EA = 1;
ET0 = 1; //CPU開中斷,ET0開中斷
while(1)
{
i = 0;
time = 1;
sw = 1;
while(time)
{
if(sw)
{
P0 = 0;
i = 0;
continue;
}
if(j == 8)
{
j = 0;
flagd = ~flagd;
if(flagd)led = 0x80;
else led=1;
}
else
{
P0 = ~led;
if(flagd)led = led >> 1;
else led = led << 1;
j++;
}
k = sszymmh[i] + 7*sszymmh[i + 1] - 1;
timer0h = FREQH[k];
timer0l = FREQL[k];
time = sszymmh[i + 2];
i = i + 3;
song();
}
}
}
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