我是初學(xué)小白用51單片機(jī)寫了個(gè)簡(jiǎn)單電子琴也是根據(jù)論壇大神改的但是現(xiàn)在仿真有問題

ID:499466 · 發(fā)表于 2019-12-26 15:21

現(xiàn)在數(shù)碼管不顯示阿揚(yáng)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(xiàn)在是什么情況嗎？
我現(xiàn)在主程序是卡在哪了？
還有現(xiàn)在是不是讀不到key
我之前沒return
現(xiàn)在也是不行

單片機(jī)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;
}