网上买51开发板，自学单片机，写了一个蜂鸣器发声的程序，下载进去蜂鸣器不响。程.... -

标题: 网上买51开发板，自学单片机，写了一个蜂鸣器发声的程序，下载进去蜂鸣器不响。程.... [打印本页]

作者: 九玖玖 时间: 2019-1-13 18:03
标题: 网上买51开发板，自学单片机，写了一个蜂鸣器发声的程序，下载进去蜂鸣器不响。程....
#include<reg52.h>
sbit BUZZ =P1^6;
unsigned int code NoteFrequ[]={523,587,659,698,784,880,988,1047,1175,1319,1397,1568,1760,1976};
unsigned int code NoteReload[]={
65536-(11059200/12)/(523*2),
  65536-(11059200/12)/(587*2),
  65536-(11059200/12)/(659*2),
  65536-(11059200/12)/(698*2),
  65536-(11059200/12)/(784*2),
  65536-(11059200/12)/(880*2),
  65536-(11059200/12)/(988*2),
  65536-(11059200/12)/(1047*2),
  65536-(11059200/12)/(1175*2),
  65536-(11059200/12)/(1319*2),
  65536-(11059200/12)/(1397*2),
  65536-(11059200/12)/(1568*2),
  65536-(11059200/12)/(1760*2),
  65536-(11059200/12)/(1976*2),
};
bit enable =1;
  bit tmrflag=0;
  unsigned char T0RH=0xFF;
unsigned char T0RL=0x00;
void PlayTwoTiger();
void main()
{
unsigned int i;

EA=1;
TMOD=0x01;
TH0=T0RH;
TL0=T0RL;
ET0=1;
TR0=1;

while(1)
{
  PlayTwoTiger();
  for(i=0;i<40000;i++);
}
}
void PlayTwoTiger()
{
unsigned char beat;
unsigned char note;
unsigned int time=0;
unsigned int beatTime=0;
unsigned int soundTime=0;
unsigned char code  TwoTigerNote[]={
   1, 2, 3, 1, 1, 2, 3, 1, 3,4,5,  3,4,5,
   5,6,5,4,3,1,  5,6,5,4,3,1,  1,5,1,  1,5,1,
};
unsigned char code  TwoTigerBeat[]={4,  4 , 4  ,4,    4 , 4 , 4 , 4,    4,4,8,    4,4,8,
                                 3,1,3,1 ,4, 4,    3,1,3,1,4,4,    4,4,8,    4,4,8,
};
  for(beat=0;beat<sizeof(TwoTigerNote); )
{
while(!tmrflag);

{
beep=0;
delay(1);
beep=1;
delay(1);
}
tmrflag=0;
if(time==0)
{
note = TwoTigerNote[beat] - 1;
  T0RH = NoteReload[note]>> 8;
  T0RL = NoteReload[note];
  beatTime = (TwoTigerBeat[beat] * NoteFrequ[note])>>2;

  soundTime = beatTime - (beatTime>>2);
  enable = 1;
  time++;
}
else
{
  if(time >=beatTime)
  {
time =0;
beat++;
  }
  else
  {
time++;
if(time==soundTime)
{
enable=0;
}
}
}
}
}
void InterruptTimer0() interrupt 1
{
TH0=T0RH;
TL0=T0RL;
tmrflag=1;
if(enable)
  BUZZ=~BUZZ;
else
  BUZZ=1;
}

作者: 九玖玖 时间: 2019-1-13 18:04
有懂的大神帮忙看下啊，谢谢。

作者: 呵呵公园 时间: 2019-1-14 00:10
定时器那里貌似有问题，我建议新手干脆用STC下载器里的软件延时计算器算出来，我是这个学期才开的单片机课如果说错了请多包涵。

作者: shuisheng 时间: 2019-1-14 01:56
给一个能发声音的程式你烧进去看看，看是外围电路没接好还是程式本声的问题，曼慢来，别急！

#include<reg52.h>
sbit SPK=P1^6; //定义喇叭端口
unsigned char frq;

void DelayUs2x(unsigned char t);//函数声明
void DelayMs(unsigned char t);

void Init_Timer0(void)
{
TMOD |= 0x01;    //使用模式1，16位定时器，
EA=1;          //总中断打开
ET0=1;          //定时器中断打开
TR0=1;          //定时器开关打开
}

main()
{
unsigned char i;
Init_Timer0(); //初始化定时器
while(1)
   {
frq=0;
for(i=0;i<60;i++)//播放1s左右一种频率
   {
   DelayMs(10);
   }
frq=100;
for(i=0;i<60;i++)//播放1s左右另外一种频率
   {
   DelayMs(10);
   }

   }
}

void DelayUs2x(unsigned char t)
{
while(--t);
}

void DelayMs(unsigned char t)
{

while(t--)
{
   //大致延时1mS
   DelayUs2x(245);
   DelayUs2x(245);
}
}

            //  定时器中断子程序
void Timer0_isr(void) interrupt 1
{
TH0=0xfe;    //重新赋值
TL0=frq;       //低8位值在主程序中不断累加
SPK=!SPK;       //端口电平取反
}

作者: jinsheng7533967 时间: 2019-2-13 20:49

呵呵公园发表于 2019-1-14 00:10
定时器那里貌似有问题，我建议新手干脆用STC下载器里的软件延时计算器算出来，我是这个学期才开的单片机课 ...

说出自己的想法这很好

作者: wulin 时间: 2019-2-14 13:52
1.你首先确认开发板上是无源蜂鸣器，否则响了也不是你想要的音乐声。
2.你的程序不能通过编译，蜂鸣器端口定义名称与程序中指令不符，delay延时程序漏写。修改后经仿真可以发出音乐声。

#include<reg52.h>
sbit BUZZ =P1^6;
unsigned int code NoteFrequ[]={523,587,659,698,784,880,988,1047,1175,1319,1397,1568,1760,1976};
unsigned int code NoteReload[]={
65536-(11059200/12)/(523*2),
  65536-(11059200/12)/(587*2),
  65536-(11059200/12)/(659*2),
  65536-(11059200/12)/(698*2),
  65536-(11059200/12)/(784*2),
  65536-(11059200/12)/(880*2),
  65536-(11059200/12)/(988*2),
  65536-(11059200/12)/(1047*2),
  65536-(11059200/12)/(1175*2),
  65536-(11059200/12)/(1319*2),
  65536-(11059200/12)/(1397*2),
  65536-(11059200/12)/(1568*2),
  65536-(11059200/12)/(1760*2),
  65536-(11059200/12)/(1976*2),
};
bit enable =1;
bit tmrflag=0;
unsigned char T0RH=0xFF;
unsigned char T0RL=0x00;

void PlayTwoTiger();

void delay(unsigned int k)
{
unsigned int i,j;
for(i=k;i>0;i--)
for(j=110;j>0;j--);
}

void main()
{
unsigned int i;
EA=1;
TMOD=0x01;
TH0=T0RH;
TL0=T0RL;
ET0=1;
TR0=1;
while(1)
{
PlayTwoTiger();
for(i=0;i<40000;i++);
}
}
void PlayTwoTiger()
{
unsigned char beat;
unsigned char note;
unsigned int time=0;
unsigned int beatTime=0;
unsigned int soundTime=0;
unsigned char code  TwoTigerNote[]={
1, 2, 3, 1, 1, 2, 3, 1, 3,4,5,  3,4,5,
5,6,5,4,3,1,  5,6,5,4,3,1,  1,5,1,  1,5,1,};
unsigned char code  TwoTigerBeat[]={4,  4 , 4  ,4,    4 , 4 , 4 , 4,    4,4,8,    4,4,8,
3,1,3,1 ,4, 4,    3,1,3,1,4,4,    4,4,8,    4,4,8,};
for(beat=0;beat<sizeof(TwoTigerNote); )
{
while(!tmrflag);
{
BUZZ=0;
delay(1);
BUZZ=1;
delay(1);
}
tmrflag=0;
if(time==0)
{
note = TwoTigerNote[beat] - 1;
T0RH = NoteReload[note]>> 8;
T0RL = NoteReload[note];
beatTime = (TwoTigerBeat[beat] * NoteFrequ[note])>>2;
soundTime = beatTime - (beatTime>>2);
enable = 1;
time++;
}
else
{
if(time >=beatTime)
{
time =0;
beat++;
}
else
{
time++;
if(time==soundTime)
{
enable=0;
}
}
}
}
}
void InterruptTimer0() interrupt 1
{
TH0=T0RH;
TL0=T0RL;
tmrflag=1;
if(enable)
   BUZZ=~BUZZ;
else
   BUZZ=1;
}

作者: toby2006 时间: 2019-2-15 13:27
会不会是硬件的问题啊？

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