单片机摇摇棒有关控制变量的问题

时间：10-02 整理：3721RD 点击：

/*****中断服务程序*****/
void intersvr0(void) interrupt 0
{

KY=~KY;
   //每个摇动来回水银开关会在摆幅两端分别产生下降沿中断，只提取其中一次（从左向右摇才显示）
if(KY==0)
{
num++;    //计算中断次数
switch(pic)    //选择画面
{
      case 0:{display1_ltor();}break;
case 1:{display2_ltor();}break;
case 2:{display3();}break;
case 3:{display4();}break;
default:{display1_ltor();}
}
}

}
上面是中断程序
控制变量ky初值为0，摇摇棒从左往右或者从右往左都会产生一个中断，按照程序所描述是不是说第一次中断不送数据，第二次中断送数据，第3次又送。
那这样来分析的话摇摇棒有可能从左往右的时候送数据，也有可能从右往左的时候送数据，
但是实际上之后摇摇棒从左往右时才送数据啊，
有点搞不懂
哪位大神能看看我的分析哪里出了问题，感激不尽！

。

在这里，我只能祝愿小编早日能找到这个问题的解决办法了，另外还是想问一下小编，你所说的“摇摇棒”是不是演唱会里观众手中挥舞的发光棒么?
补充：刚才必应一下，原来是这个，关键部件是水银开关，回到题目，在这里，设A为左边，B为右边，因为摇摇棒在摇晃的时候，路径是一个扇形，即A与B的路径也是一个扇形，在摇摇棒摇摆的时候，在A点位置首先程序会将变量KY设置为1，然后调用中断显示画面，那个变量pic用来设置显示哪一幅画面，在摇摆到B点位置时程序将变量KY设置为0，然后调用中断，显然无法显示画面，至于程序如何知道摇摇棒在A点还是B点，关键还是水银开关。

感谢大佬顶贴，有个问题，在A点程序怎么将KY置1的

KY=0时才调用显示程序display啊

KY=1，那么~KY就为0.

我现在的理解是KY初值为0，在A点触发中断，执行KY=~KY,取反之后为1，调用不了显示程序。
看你的解释是说在触发中断之前还有个让ky由0变1的操作吗

在A点和B点会各进行一次对KY的操作。

我看程序里也没这个操作啊

#include <AT89X52.h>
#define uchar unsigned char
#define uint unsigned int //宏定义
#define KEY P3_7    //定义画面切换按键
uchar KY; //KY作用在后面说明
uchar disp;    //显示汉字指针
uchar pic=0,num=0;    //pic为按键次数；num为中断次数
//取字模方式请参考取字模文件夹内说明文档
uchar code dis1[] = {
0x04,0x10,0x24,0x08,0x44,0x06,0x84,0x01,0x64,0x82,0x9C,0x4C,0x40,0x20,0x30,0x18,
0x0F,0x06,0xC8,0x01,0x08,0x06,0x08,0x18,0x28,0x20,0x18,0x40,0x00,0x80,0x00,0x00,/*"欢",0*/
0x40,0x00,0x40,0x40,0x42,0x20,0xCC,0x1F,0x00,0x20,0x00,0x40,0xFC,0x4F,0x04,0x44,
0x02,0x42,0x00,0x40,0xFC,0x7F,0x04,0x42,0x04,0x44,0xFC,0x43,0x00,0x40,0x00,0x00,/*"迎",1*/
0x80,0x00,0x60,0x00,0xF8,0xFF,0x07,0x00,0x04,0x80,0xE4,0x81,0x24,0x45,0x24,0x29,
0x24,0x11,0xFF,0x2F,0x24,0x41,0x24,0x41,0x24,0x81,0xE4,0x81,0x04,0x80,0x00,0x00,/*"使",2*/
0x00,0x80,0x00,0x60,0xFE,0x1F,0x22,0x02,0x22,0x02,0x22,0x02,0x22,0x02,0xFE,0x7F,
0x22,0x02,0x22,0x02,0x22,0x42,0x22,0x82,0xFE,0x7F,0x00,0x00,0x00,0x00,0x00,0x00,/*"用",3*/
0x08,0x02,0x08,0x01,0x89,0x00,0xEE,0xFF,0x98,0x00,0x00,0x03,0x00,0x00,0xF8,0x1F,
0x88,0x08,0x88,0x08,0xFF,0xFF,0x88,0x08,0x88,0x08,0xF8,0x1F,0x00,0x00,0x00,0x00,/*"神",4*/
0x40,0x00,0x40,0x00,0x44,0x00,0x44,0x1E,0x64,0x12,0x54,0x12,0x4C,0x12,0x47,0x12,
0x4C,0x1E,0x54,0x40,0x64,0x80,0xC4,0x7F,0x44,0x00,0x40,0x00,0x40,0x00,0x00,0x00,/*"奇",5*/
0x00,0x80,0x00,0x60,0xFE,0x9F,0x4A,0x80,0xAA,0x4F,0xFE,0x4A,0x9A,0x2A,0xEA,0x1A,
0x83,0x6F,0xAA,0xBA,0x9A,0xAA,0xFE,0xBA,0x9A,0xEF,0x2A,0x80,0x42,0xC0,0x00,0x00,/*"魔",6*/
0x40,0x10,0x60,0x38,0x50,0x14,0x4C,0x12,0x43,0x11,0xC0,0x14,0x30,0x38,0x04,0x00,
0x04,0x00,0x04,0x00,0x04,0x40,0x04,0x80,0x04,0x40,0xFC,0x3F,0x00,0x00,0x00,0x00,/*"幻",7*/
0x10,0x02,0x10,0x42,0x10,0x81,0xFF,0x7F,0x90,0x00,0x00,0x00,0x94,0x02,0x64,0x7A,
0x44,0x42,0x54,0x42,0xE2,0x7F,0x42,0x42,0x63,0x42,0x5A,0xFA,0x00,0x02,0x00,0x00,/*"摇",8*/
0x10,0x02,0x10,0x42,0x10,0x81,0xFF,0x7F,0x90,0x00,0x00,0x00,0x94,0x02,0x64,0x7A,
0x44,0x42,0x54,0x42,0xE2,0x7F,0x42,0x42,0x63,0x42,0x5A,0xFA,0x00,0x02,0x00,0x00,/*"摇",9*/
0x10,0x04,0x10,0x03,0xD0,0x00,0xFF,0xFF,0x90,0x00,0x10,0x01,0x44,0x12,0x54,0x11,
0xD4,0x14,0x74,0x14,0x5F,0xFF,0x54,0x14,0xD4,0x14,0x54,0x11,0x44,0x12,0x00,0x00,/*"棒",10*/
0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x33,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*"！",11*/
};
uchar code dis2[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x3F,0x00,0x20,0x00,0x20,0x00,0x20,
0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0x0F,
0x04,0x10,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x04,0x10,0xF8,0x0F,0x00,0x00,
0x00,0x00,0x00,0x00,0xFE,0x07,0x00,0x08,0x00,0x10,0x00,0x20,0x00,0x20,0x00,0x10,
0x00,0x08,0xFE,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x3F,0x82,0x20,0x82,0x20,
0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*LOVE*/
};
uchar code dis3[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x78,0x00,0xFC,0x00,0xFE,0x01,0xFE,0x03,0xFE,0x07,0xFE,0x0F,0xFE,0x1F,0xFC,0x3F,
0xF8,0x7F,0xFC,0x3F,0xFE,0x1F,0xFE,0x0F,0xFE,0x07,0xFE,0x03,0xFE,0x01,0xFC,0x00,
0x78,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*心形图案*/
};
uchar code dis4[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x01,0x40,0x01,0xC0,0x01,0x00,0x00,0x00,0x00,
0xF0,0x0F,0x08,0x10,0x04,0x20,0x00,0x00,0x00,0x00,0xF0,0x3F,0x08,0x00,0x04,0x00,
0x04,0x00,0x04,0x00,0x08,0x00,0xF0,0x3F,0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x20,
0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,0xF0,0x3F,0x08,0x00,0x04,0x00,
0x04,0x00,0x04,0x00,0x08,0x00,0xF0,0x3F,0x00,0x00,0x00,0x00,0x04,0x20,0x08,0x10,
0xF0,0x0F,0x00,0x00,0x00,0x00,0xC0,0x01,0x40,0x01,0xC0,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*呵呵o(∩_∩)o图案*/
};
/*****函数声明*****/
void display1(void);
void display2(void);
void display3(void);
void display4(void);
/*****n（us）延时子程序*****/
void DelayUs(uint N)
{
uint x;
for(x=0; x<=N;x++);
}
/*****中断服务程序*****/
void intersvr0(void) interrupt 0
{
EA=0;
KY=~KY;    //每个摇动来回水银开关会在摆幅两端分别产生下降沿中断，只提取其中一次（从左向右摇才显示）
if(KY==0)
{
num++;    //计算中断次数
switch(pic)    //选择画面
{
case 0: {display1();} break;
case 1: {display2();} break;
case 2: {display3();} break;
case 3: {display4();} break;
default:{display1();}
}
}
EA=1;
}
/*****显示子程序1*****/
void display1(void)
{
uchar i;
if(num>4) {disp++;num=0;}    //每中断4次切换一屏显示
if(disp>=3) disp=0;    //一屏4个字，显示几屏disp就大于等于几
DelayUs(4000);    //此处延时时间依各硬件差别而各不相同，试着调整使得显示内容居中即可（括号内数值偏小时，字会偏左）
for(i=0;i<64;i++)
{
P0=~dis1[disp*128+i*2];
P2=~dis1[disp*128+i*2+1];
DelayUs(110);  //此延时是字的宽度，一般不用修改
}
}
/*****显示子程序2*****/
void display2(void)
{
uchar i;
if(num>4) {disp++;num=0;}
if(disp>=1) disp=0;
DelayUs(4000);    //此处延时时间依各硬件差别而各不相同，试着调整使得显示内容居中即可
for(i=0;i<64;i++)
{
P0=~dis2[disp*128+i*2];
P2=~dis2[disp*128+i*2+1];
DelayUs(110);
}
}
/*****显示子程序3*****/
void display3(void)
{
uchar i;
if(num>4) {disp++;num=0;}
if(disp>=1) disp=0;
DelayUs(4000);    //此处延时时间依各硬件差别而各不相同，试着调整使得显示内容居中即可
for(i=0;i<64;i++)
{
P0=~dis3[disp*128+i*2];
P2=~dis3[disp*128+i*2+1];
DelayUs(110);
}
}
/*****显示子程序4*****/
void display4(void)
{
uchar i;
if(num>4) {disp++;num=0;}
if(disp>=1) disp=0;
DelayUs(4000);    //此处延时时间依各硬件差别而各不相同，试着调整使得显示内容居中即可
for(i=0;i<64;i++)
{
P0=~dis4[disp*128+i*2];
P2=~dis4[disp*128+i*2+1];
DelayUs(110);
}
}
/*****主函数*****/
void main(void)
{
IT0=1;
EX0=1;
EA=1;    //开中断，下降沿中断
KY=0;
KEY=1;
while(1)    //主程序中只检测按键
{
  if(KEY==0)    //画面切换键按下
  {
   DelayUs(10000);    //按键去抖
   if(KEY==0);
   pic++;
   while(KEY==0);
  }
  if(pic>3)pic=0;
}
}
/*****END*****/

只有中断函数里面对KY进行了一次取反操作

如果整个程序，只有中断函数里面对KY进行一次取反操作的话，那么就不能保证只有从左往右才会显示画面，你看看程序开头有没有对KY进行定义的。

#include <AT89X52.h>
#define uchar unsigned char
#define uint unsigned int
#define KEY P3_7
uchar ZD;
uchar point=0;
uchar pcnt=0,num=0;
unsigned char code wenzi[] = {
0x00,0x01,0x00,0x01,0x90,0x00,0x88,0xFE,0x4C,0x42,0x57,0x42,0x24,0x42,0x24,0x42,
0x54,0x42,0x54,0x42,0x8C,0x42,0x84,0xFE,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0x00,/*"各",0*/
0x00,0x01,0x80,0x00,0x60,0x00,0xF8,0xFF,0x07,0x40,0x10,0x40,0x90,0x41,0x10,0x5E,
0x11,0x40,0x16,0x40,0x10,0x70,0x10,0x4E,0xD0,0x41,0x10,0x40,0x00,0x40,0x00,0x00,/*"位",1*/
0x20,0x10,0x20,0x08,0x24,0x04,0x24,0x02,0x24,0x3F,0x24,0x45,0xBF,0x44,0x64,0x44,
0x24,0x42,0x34,0x42,0x28,0x42,0x24,0x41,0x22,0x78,0x20,0x00,0x20,0x00,0x00,0x00,/*"老",2*/
0x00,0x00,0xFC,0x87,0x00,0x40,0x00,0x30,0xFF,0x0F,0x00,0x00,0x02,0x00,0xE2,0x1F,
0x22,0x00,0x22,0x00,0xFE,0xFF,0x22,0x08,0x22,0x10,0xE2,0x0F,0x02,0x00,0x00,0x00,/*"师",3*/
0x00,0x40,0x00,0x40,0x00,0x40,0x00,0x40,0x00,0x40,0x00,0x40,0xFF,0x7F,0x40,0x40,
0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x40,0x00,0x40,0x00,0x00,/*"上",4*/
0x00,0x02,0x40,0x02,0x20,0x02,0x18,0x02,0x0F,0x02,0x08,0x02,0x08,0x02,0xF8,0xFF,
0x08,0x02,0x08,0x02,0x08,0x02,0x08,0x02,0x08,0x02,0x00,0x02,0x00,0x02,0x00,0x00,/*"午",5*/
0x10,0x40,0x10,0x22,0xF0,0x15,0x1F,0x08,0x10,0x16,0xF0,0x61,0x00,0x00,0x80,0x00,
0x82,0x40,0x82,0x80,0xE2,0x7F,0x92,0x00,0x8A,0x00,0x86,0x00,0x80,0x00,0x00,0x00,/*"好",6*/
0xFC,0x0F,0x04,0x04,0xFC,0x0F,0x00,0x00,0xFE,0xFF,0x42,0x10,0xBE,0x0F,0x00,0x00,
0xF2,0x0F,0x12,0x04,0xF2,0x4F,0x02,0x80,0xFE,0x7F,0x02,0x00,0x00,0x00,0x00,0x00,/*"啊",7*/
};
unsigned char code cool[] = {
0xC0,0x07,0x30,0x18,0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x10,0x38,0x08,0x00,0x00,/*"C",0*/
0xE0,0x0F,0x10,0x10,0x08,0x20,0x08,0x20,0x08,0x20,0x10,0x10,0xE0,0x0F,0x00,0x00,/*"O",1*/
0xE0,0x0F,0x10,0x10,0x08,0x20,0x08,0x20,0x08,0x20,0x10,0x10,0xE0,0x0F,0x00,0x00,/*"O",2*/
0x08,0x20,0xF8,0x3F,0x08,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x30,0x00,0x00,/*"L",3*/
};
unsigned char code smile[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF0,0x1F,0xF8,0x3F,0xFC,0x67,
0x8E,0x6F,0x8E,0x6F,0x8E,0x6F,0xFE,0x6F,0xFE,0x6F,0x8E,0x6F,0x8E,0x6F,0x8E,0x6F,
0xFC,0x67,0xF8,0x3F,0xF0,0x1F,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
/*smile*/
};
unsigned char code love [] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x3F,0x00,0x20,0x00,0x20,0x00,0x20,
0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0x0F,
0x04,0x10,0x02,0x20,0x02,0x20,0x02,0x20,0x02,0x20,0x04,0x10,0xF8,0x0F,0x00,0x00,
0x00,0x00,0x00,0x00,0xFE,0x07,0x00,0x08,0x00,0x10,0x00,0x20,0x00,0x20,0x00,0x10,
0x00,0x08,0xFE,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,0x3F,0x82,0x20,0x82,0x20,
0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x82,0x20,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,/*LOVE*/
};
void display1(void);
void display2(void);
void display3(void);
void display4(void);
void Delay(uint N)
{
uint x;
for(x=0; x<=N;x++);
}
void zhongduan(void) interrupt 0
{
;
  ZD=~ZD;
if(ZD==0)
{
num++;
switch(pcnt)
{
case 0:{display1();}break;
case 1:{display2();}break;
case 2:{display3();}break;
case 3:{display4();}break;
default:{display1();}
}
}
}
void display1(void)
{
uchar i;
if(num>10){point++;num=0;}
if(point>1)point=0;
  Delay(5200);
for(i=0;i<64;i++)
{
   P0=~wenzi[point*128+i*2];
   P2=~wenzi[point*128+i*2+1];
   Delay(100);
}
}
void display2(void)
{
uchar i;
Delay(4000);
for(i=0;i<32;i++)
{
   P0=~cool[i*2];
   P2=~cool[i*2+1];
   Delay(140);
}
}
void display3(void)
{
uchar i;
  Delay(4000);
for(i=0;i<40;i++)
{
   P0=~smile[i*2];
   P2=~smile[i*2+1];
   Delay(120);
}
}
void display4(void)
{
uchar i;
Delay(4000);
for(i=0;i<64;i++)
{
   P0=~love[i*2];
   P2=~love[i*2+1];
   Delay(120);
}
}
void main(void)
{
IT0=1;
EX0=1;
EA=1;
ZD=0;
KEY=1;
while(1)
{
  if(KEY==0)
  {
  Delay(10000);
  if(KEY==0);
  pcnt++;}
  if(pcnt>3)pcnt=0;
}
}

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xC0,0x07,0x30,0x18,0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x10,0x38,0x08,0x00,0x00,/*"C",0*/
0xE0,0x0F,0x10,0x10,0x08,0x20,0x08,0x20,0x08,0x20,0x10,0x10,0xE0,0x0F,0x00,0x00,/*"O",1*/
0xE0,0x0F,0x10,0x10,0x08,0x20,0x08,0x20,0x08,0x20,0x10,0x10,0xE0,0x0F,0x00,0x00,/*"O",2*/
0x08,0x20,0xF8,0x3F,0x08,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x30,0x00,0x00,/*"L",3*/
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

好像还真没有。

那个KEY变量绑定到P3_7引脚，这个变量比较重要，P3_7引脚的高低电平会改变KEY的值，KEY=0调用中断，KEY=1不调用中断，至于ZD的值只是用于判断是否显示画面，这个没有什么好深究的，主要还是KEY。

sorry 发的这个程序和我刚开始给的变量名有点不一样，原来那个KY是下面这个程序的ZD。
p3.7引脚电平变化不会触发中断，水银开关是连p3.2（into）

(⊙﹏⊙)，这样的话，就不知道了，只能坐等玩过单片机的坛友回答一下了

还是非常感谢！

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