演奏一段音阶

ID:254377 · 发表于 2017-11-27 21:22

#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int

uchar i=0;
sbit SPK = P3^4;
sbit K1 = P1^0;
uchar code HI_LIST[]=
{
0,266,229,232,233,236,238,240,241,242,244,245,246,247,248
};
uchar code LO_LIST[]=
{
0,4,13,10,20,3,8,6,2,23,5,26,1,4,3
};

void T0_INT() interrupt 1
{
TL0 = LO_LIST[i];
TH0 = HI_LIST[i];
SPK = !SPK;
}

void DelayMS(uint ms)
{
uchar t;
while(ms--)
{
     for(t=0;t<120;t++);
}
}

void main()
{
IE = 0x82;
TMOD = 0x00;
while(1)
{
     while(K1==1);
while(K1==0);
for(i=1;i<15;i++)
{
     TR0 = 1;
DelayMS(500);
TR0 = 0;
DelayMS(50);
}
}
}

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演奏一段音阶

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