我是初學小白用51單片機寫了個簡單電子琴也是根據論壇大神改的但是現在仿真有問題

ID:499466 · 發表于 2019-12-26 15:21

現在數碼管不顯示阿揚聲器也沒響我之前在setup 寫了TR0=1 能響
有人能幫我看一下我現在是什么情況嗎？
我現在主程序是卡在哪了？
還有現在是不是讀不到key
我之前沒return
現在也是不行

單片機源程序如下:

#include <reg52.h>
sbit Speaker = P2^7;
unsigned char key=0;
unsigned char led[9] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x79,};
unsigned int table[] = {64550,64580,64684,64777,64820,64898,64968,65030,65050,65058,65110,65157,65178,65217,65252,65283,65310,};
unsigned char exp_music[]={1,4,2,4,3,4,1,4,3,4,2,4,3,4,1,4,3,4,4,4,5,8,3,4,4,4,5,8,5,3,6,1,5,3,4,1,3,4,1,4,5,3,6,1,5,3, 4,1,3,4,1,4,1,4,8,4,1,8,1,4,8,4,1,8,0XFF};
void delay(unsigned int t)
{
unsigned int i, j;
for(i=t;i>0;i--)
{
for(j=124;j>0;j--)
{
}
}
}
int scan_key(void)
{
switch(P1)
{
case 0xfe:key=1;break;
case 0xfd:key=2;break;
case 0xfb:key=3;break;
case 0xf7:key=4;break;
case 0xef:key=5;break;
case 0xdf:key=6;break;
case 0xbf:key=7;break;
case 0x7f:key=8;break;
}
return key;
}
void play()
{
unsigned int i=0;
TH0=table[exp_music[i]]/256;
TL0=table[exp_music[i]]%256;
delay(exp_music[i]);
i++;
if(exp_music[i]==0xff)
{
i=0;
TR0=0;
}
}
void setup()
{
TMOD=0x01;
ET0=1;
EA=1;
}
void begin()
{
P0=0xff;
P1=0xff;
Speaker=0;
}
void main()
{
begin();
while(1)
{
scan_key();
setup();
if(key!=0&&key!=8)
{
P0=led[key];
delay(50000);
TR0=1;
TH0=table[key]/256;
TL0=table[key]%256;
}
else
{
P0=led[key];
delay(50000);
play();
}
}
}
void timer0() interrupt 1
{
TH0=table[key]/256;
TL0=table[key]%256;
Speaker=~Speaker;
}