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標題: 咨詢一個單片機同時驅(qū)動數(shù)碼管和點陣有閃爍的問題 [打印本頁]

作者: 16515 時間: 2017-11-27 16:09
標題: 咨詢一個單片機同時驅(qū)動數(shù)碼管和點陣有閃爍的問題
通過數(shù)碼管做的頻率計，點陣來顯示波形。但是波形和數(shù)碼管會出現(xiàn)閃爍的問題，求大神解決

QQ圖片20171127160843.png (77.74 KB, 下載次數(shù): 52)

作者: 16515 時間: 2017-11-27 16:15
#include <reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint  unsigned  int
uchar duan[10]={0xc0,0Xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};    //所需的段的位碼
//uchar wei[4]={0XEf,0XDf,0XBf,0X7f};                               //位的控制端 (開發(fā)板)
uchar wei[4]={0X80,0X40,0X20,0X10};                               //位的控制端 (仿真)
uint z,x,c,v, date; //定義數(shù)據(jù)類型
uint dispcount=0;
uint lck=0;
uint disp=0;
/*  數(shù)據(jù)端接口定義 */
sbit  key0=P1^0;
sbit  key1=P1^1;
sbit  key2=P1^2;
sbit  key3=P1^3;

sbit  sck = P2^0;    //輸入時鐘
sbit  row_dat = P2^1;    //行數(shù)據(jù)時鐘
sbit  row_buf_sck = P2^2; //行鎖存
//sbit  row_mr = P2^4;    //移位寄存器清零端
//sbit  row_oe = P2^5; //輸出使能
/*  選通端接口定義 */
sbit  col_dat = P2^6;    //列數(shù)據(jù)時鐘
sbit  col_buf_sck = P2^3; //列鎖存
unsigned char keyval;

unsigned int code sel[16] = {0xff7f,0x7fff,0xffbf,0xbfff,0xffdf,0xdfff,0xffef,0xefff,
   0xfff7,0xf7ff,0xfffb,0xfbff,0xfffd,0xfdff,0xfffe,0xfeff};

unsigned char code hanzi[4][32] =
{

{0x1C,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x1C,0x00,0x02,0x00,0x01,0x00,
0x01,0x00,0x02,0x00,0x1C,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x1C,0x00},/*"正弦",0*/

{0x00,0xFF,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFF,0x00,0x01,0x00,0x01,
0x00,0x01,0x00,0x01,0x00,0xFF,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFF},/*"方波",1*/

{0x00,0x40,0x00,0x80,0x01,0x00,0x02,0x00,0x01,0x00,0x00,0x80,0x00,0x40,0x00,0x20,
0x00,0x40,0x00,0x80,0x01,0x00,0x02,0x00,0x01,0x00,0x00,0x80,0x00,0x40,0x00,0x20},/*"三角波",2*/

{0x1C,0xFF,0x20,0x80,0x40,0x80,0x40,0x80,0x20,0x80,0x1C,0xFF,0x02,0x01,0x01,0x01,
0x01,0x01,0x02,0x01,0x1C,0xFF,0x20,0x80,0x40,0x80,0x40,0x80,0x20,0x80,0x1C,0xFF},/*"正弦和方波",3*/

};

void display(unsigned char *p);
void send_data_row(unsigned int dat);  /*  發(fā)送行數(shù)據(jù)端數(shù)據(jù)函數(shù)  */
void send_data_col(unsigned int dat);  /*  發(fā)送列選通端數(shù)據(jù)函數(shù)  */
void delay(unsigned int m);
void T(void);
void delay10ms();
void delayfre(uchar t)
{
  uchar i,j;
for(i=0;i<t;i++)
{
      for(j=13;j>0;j--);
   { ;
   }
}
}

void xianshi()
{
/*****************數(shù)據(jù)轉(zhuǎn)換*****************************/
  z=date/1000;    //求千位
  x=date%1000/100;    //求百位
  c=date%100/10;    //求十位
  v=date%10;    //求個位

   P2=wei[0];
   P0=duan[z];
   delayfre(30);
       P2=wei[1];
   P0=duan[x];
   delayfre(30);
      P2=wei[2];
   P0=duan[c];
   delayfre(30);
   P2=wei[3];
   P0=duan[v];
   delayfre(30);


   }

/*************************************************************************
                              定時器初值1ms
**************************************************************************/
void initTimer(void)
{
TMOD=0x0;
TH0=0xe3;
TL0=0xc;
}

/*************************************************************************
                              定時器函數(shù)
**************************************************************************/
void timer0(void) interrupt 1
{
TH0=0xe3;
TL0=0xc;
lck++;
if(lck==1000)
   {
      disp=dispcount;
      lck=0;
dispcount=0;
   }

}

/*************************************************************************
                              中斷函數(shù)
**************************************************************************/
void int0(void) interrupt 0
{

dispcount++; //每一次中斷，計數(shù)加一

}

void T(void)
{
P1=0xff;
if((P1&0x0f)!=0x0f)
{
delay10ms();
     if(key0==0)
keyval=0;
if(key1==0)
keyval=1;
if(key2==0)
keyval=2;
if(key3==0)
keyval=3;

}
}

void delay10ms(void)
{
unsigned char i,j;
for(i=0;i<100;i++)
for(j=0;j<100;j++)
;
}
void send_data_row(unsigned int dat)
{
unsigned char i;

for(i=0;i<16;i++)
{
sck = 0;
row_dat = dat&0x8000; //temp<<=1;
dat = dat<<1; //ds = CY;
sck = 1;
}
row_buf_sck = 0;
_nop_();
_nop_();
row_buf_sck = 1;
}

void send_data_col(unsigned int dat)
{
unsigned char i;
for(i=0;i<16;i++)
{
sck = 0;
col_dat = dat&0x8000;
dat = dat<<1;
sck = 1;
}
col_buf_sck = 0;
_nop_();
_nop_();
col_buf_sck = 1;
}

void delay(unsigned int m)
{
unsigned char i;
for(;m>0;m--)
{
for(i=0;i<124;i++)
{;}
}
}

void display(unsigned char *p)
{
unsigned char i;
// unsigned int temp;
for(i=0;i<32;i++)
{
if(i<16)
{
send_data_row(0x0000);
// temp = sel[i]|0xff00;
send_data_col(sel[i]);
send_data_row(*p);
p++;
delay(2);

}
else
{
send_data_row(0x0000);
// temp = (sel[i]<<8)|0x00ff;
send_data_col(sel[i-16]);
send_data_row((*p)<<8);
p++;
delay(2);

}
}
}
void main()
{
   IT0=1;    //INT0下降沿中斷
EX0=1;    //允許INT1中斷
initTimer(); //裝入初值
TR0=1;
ET0=1;
EA=1;
keyval=0;
while(1)
{

   date=disp;
xianshi();
T();
switch(keyval)
{
case 0:display(hanzi[0]);
break;
case 1:display(hanzi[1]);
break;
case 2:display(hanzi[2]);
break;
case 3:display(hanzi[3]);
break;

}
}
}

作者: 16515 時間: 2017-11-27 17:09
#include <reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint  unsigned  int
uchar duan[10]={0xc0,0Xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};    //所需的段的位碼
//uchar wei[4]={0XEf,0XDf,0XBf,0X7f};                               //位的控制端 (開發(fā)板)
uchar wei[4]={0X80,0X40,0X20,0X10};                               //位的控制端 (仿真)
uint z,x,c,v, date; //定義數(shù)據(jù)類型
uint dispcount=0;
uint lck=0;
uint disp=0;
/*  數(shù)據(jù)端接口定義 */
sbit  key0=P1^0;
sbit  key1=P1^1;
sbit  key2=P1^2;
sbit  key3=P1^3;

sbit  sck = P2^0;    //輸入時鐘
sbit  row_dat = P2^1;    //行數(shù)據(jù)時鐘
sbit  row_buf_sck = P2^2; //行鎖存
//sbit  row_mr = P2^4;    //移位寄存器清零端
//sbit  row_oe = P2^5; //輸出使能
/*  選通端接口定義 */
sbit  col_dat = P2^6;    //列數(shù)據(jù)時鐘
sbit  col_buf_sck = P2^3; //列鎖存
unsigned char keyval;

unsigned int code sel[16] = {0xff7f,0x7fff,0xffbf,0xbfff,0xffdf,0xdfff,0xffef,0xefff,
   0xfff7,0xf7ff,0xfffb,0xfbff,0xfffd,0xfdff,0xfffe,0xfeff};

unsigned char code hanzi[4][32] =
{

{0x1C,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x1C,0x00,0x02,0x00,0x01,0x00,
0x01,0x00,0x02,0x00,0x1C,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x20,0x00,0x1C,0x00},/*"正弦",0*/

{0x00,0xFF,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFF,0x00,0x01,0x00,0x01,
0x00,0x01,0x00,0x01,0x00,0xFF,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0xFF},/*"方波",1*/

{0x00,0x40,0x00,0x80,0x01,0x00,0x02,0x00,0x01,0x00,0x00,0x80,0x00,0x40,0x00,0x20,
0x00,0x40,0x00,0x80,0x01,0x00,0x02,0x00,0x01,0x00,0x00,0x80,0x00,0x40,0x00,0x20},/*"三角波",2*/

{0x1C,0xFF,0x20,0x80,0x40,0x80,0x40,0x80,0x20,0x80,0x1C,0xFF,0x02,0x01,0x01,0x01,
0x01,0x01,0x02,0x01,0x1C,0xFF,0x20,0x80,0x40,0x80,0x40,0x80,0x20,0x80,0x1C,0xFF},/*"正弦和方波",3*/

};

void display(unsigned char *p);
void send_data_row(unsigned int dat);  /*  發(fā)送行數(shù)據(jù)端數(shù)據(jù)函數(shù)  */
void send_data_col(unsigned int dat);  /*  發(fā)送列選通端數(shù)據(jù)函數(shù)  */
void delay(unsigned int m);
void T(void);
void delay10ms();
void delayfre(uchar t)
{
  uchar i,j;
for(i=0;i<t;i++)
{
      for(j=13;j>0;j--);
   { ;
   }
}
}

void xianshi()
{
/*****************數(shù)據(jù)轉(zhuǎn)換*****************************/
  z=date/1000;    //求千位
  x=date%1000/100;    //求百位
  c=date%100/10;    //求十位
  v=date%10;    //求個位

   P2=wei[0];
   P0=duan[z];
   delayfre(30);
       P2=wei[1];
   P0=duan[x];
   delayfre(30);
      P2=wei[2];
   P0=duan[c];
   delayfre(30);
   P2=wei[3];
   P0=duan[v];
   delayfre(30);


   }

/*************************************************************************
                              定時器初值1ms
**************************************************************************/
void initTimer(void)
{
TMOD=0x0;
TH0=0xe3;
TL0=0xc;
}

/*************************************************************************
                              定時器函數(shù)
**************************************************************************/
void timer0(void) interrupt 1
{
TH0=0xe3;
TL0=0xc;
lck++;
if(lck==1000)
   {
      disp=dispcount;
      lck=0;
dispcount=0;
   }

}

/*************************************************************************
                              中斷函數(shù)
**************************************************************************/
void int0(void) interrupt 0
{

dispcount++; //每一次中斷，計數(shù)加一

}

void T(void)
{
P1=0xff;
if((P1&0x0f)!=0x0f)
{
delay10ms();
     if(key0==0)
keyval=0;
if(key1==0)
keyval=1;
if(key2==0)
keyval=2;
if(key3==0)
keyval=3;

}
}

void delay10ms(void)
{
unsigned char i,j;
for(i=0;i<100;i++)
for(j=0;j<100;j++)
;
}
void send_data_row(unsigned int dat)
{
unsigned char i;

for(i=0;i<16;i++)
{
sck = 0;
row_dat = dat&0x8000; //temp<<=1;
dat = dat<<1; //ds = CY;
sck = 1;
}
row_buf_sck = 0;
_nop_();
_nop_();
row_buf_sck = 1;
}

void send_data_col(unsigned int dat)
{
unsigned char i;
for(i=0;i<16;i++)
{
sck = 0;
col_dat = dat&0x8000;
dat = dat<<1;
sck = 1;
}
col_buf_sck = 0;
_nop_();
_nop_();
col_buf_sck = 1;
}

void delay(unsigned int m)
{
unsigned char i;
for(;m>0;m--)
{
for(i=0;i<124;i++)
{;}
}
}

void display(unsigned char *p)
{
unsigned char i;
// unsigned int temp;
for(i=0;i<32;i++)
{
if(i<16)
{
send_data_row(0x0000);
// temp = sel[i]|0xff00;
send_data_col(sel[i]);
send_data_row(*p);
p++;
delay(2);

}
else
{
send_data_row(0x0000);
// temp = (sel[i]<<8)|0x00ff;
send_data_col(sel[i-16]);
send_data_row((*p)<<8);
p++;
delay(2);

}
}
}
void main()
{
   IT0=1;    //INT0下降沿中斷
EX0=1;    //允許INT1中斷
initTimer(); //裝入初值
TR0=1;
ET0=1;
EA=1;
keyval=0;
while(1)
{
   T();
   date=disp;
xianshi();
switch(keyval)
{
case 0:display(hanzi[0]);
break;
case 1:display(hanzi[1]);
break;
case 2:display(hanzi[2]);
break;
case 3:display(hanzi[3]);
break;
}
}

}

作者: fancean 時間: 2017-11-27 18:55
如果顯示結(jié)果是正常的，只是顯示閃爍，那可能是單片機刷新的速度不夠，可以把你耗時間的運算用耗時間少的操作代替掉，比如：*用左移替換掉，把delay10ms用別的操作替換掉，10MS太大了，比如用顯示操作替換掉DELAY的時間，還不行的話，就用4片595支持數(shù)碼管的顯示，其與時間用來刷新點陣模塊。

作者: 16515 時間: 2017-11-27 20:11

fancean 發(fā)表于 2017-11-27 18:55
如果顯示結(jié)果是正常的，只是顯示閃爍，那可能是單片機刷新的速度不夠，可以把你耗時間的運算用耗時間少的操 ...

好的，我試一下。新手，有太多不懂的了

作者: 歸依龍井 時間: 2017-11-27 20:16
應(yīng)該是你的程序所用時間太長，出現(xiàn)“延時”的情況了

作者: 憶生若水 時間: 2017-11-27 21:41
程序準備時間太長，再次進入之前耗時太長

作者: 965351245 時間: 2017-11-27 23:03
好帖，贊一個

作者: 7418 時間: 2017-11-27 23:37
好帖，贊

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