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標(biāo)題: 單片機(jī)超聲波檢測距離并在兩片74HC595芯片驅(qū)動四位一體數(shù)碼管上顯示的問題 [打印本頁]

作者: rooikezz 時間: 2021-12-22 17:13
標(biāo)題: 單片機(jī)超聲波檢測距離并在兩片74HC595芯片驅(qū)動四位一體數(shù)碼管上顯示的問題
各位大佬，目前我有兩個程序，一個是超聲波模塊程序（沒問題），另一個是595驅(qū)動四位一體數(shù)碼管的程序，數(shù)碼管程序的結(jié)果是顯示4321，可以顯示也沒問題。
但是我把它們兩個放到一起，想實現(xiàn)標(biāo)題內(nèi)容，發(fā)現(xiàn)數(shù)碼管最高位亮，后面三位一閃一閃的很暗，并且不能實現(xiàn)功能。

以為是數(shù)碼管的程序不能實現(xiàn)變量（距離的變化），只能實現(xiàn)常量（4321），就單獨(dú)把數(shù)碼管的程序修改了一下，可以實現(xiàn)數(shù)字在數(shù)碼管上來回變化，在附件的《中斷實現(xiàn)數(shù)碼管變量變化》。

之后我以為可以了，就把一樣的格式放到總程序里面，發(fā)現(xiàn)還是最高位亮，后面三位很暗，一閃一閃的。如附件《出現(xiàn)問題的程序》

怎么才能讓它4位都正常發(fā)光而且能實現(xiàn)距離變化時數(shù)碼管上的數(shù)字也變化？

求教，謝謝各位！

中斷實現(xiàn)數(shù)碼管變量變化.zip

13.39 KB, 下載次數(shù): 6

作者: rooikezz 時間: 2021-12-22 18:59
出問題的程序代碼如下：
#include <AT89X51.H>
#define uint unsigned int
#define uchar unsigned char
sbit Tx=P2^1;
sbit Rx=P2^0;
bit TimeUp=0;
int Th0,Tl0;
unsigned int time0=0;

void main (void);
void LED4_Display (void);
void LED_OUT(uchar X);
unsigned char code fseg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
unsigned char code segbit[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
unsigned char disbuf[4]={0,0,0,0};
unsigned char code LED_0F[];
sbit DIO=P1^0;
sbit RCLK=P1^1;
sbit SCLK=P1^2;

uchar LED[8];
uint Measureresult=0;

void delay(unsigned int xms)
{
            unsigned char j;
            while(xms--)
            {
                              for(j=0;j<125;j++);
            }
}

void LED4_Display (void)
{
      unsigned char code *led_table;
      uchar i;

      led_table = LED_0F + LED[0];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x01);

      RCLK = 0;
      RCLK = 1;

      led_table = LED_0F + LED[1];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x02);

      RCLK = 0;
      RCLK = 1;

      led_table = LED_0F + LED[2];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x04);

      RCLK = 0;
      RCLK = 1;

      led_table = LED_0F + LED[3];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x08);

      RCLK = 0;
      RCLK = 1;


      i=0xff;
      LED_OUT(i);
      LED_OUT(0x01);
      RCLK=0;
      RCLK=1;
            LED_OUT(i);
      LED_OUT(0x02);
      RCLK=0;
      RCLK=1;
            LED_OUT(i);
      LED_OUT(0x04);
      RCLK=0;
      RCLK=1;
            LED_OUT(i);
      LED_OUT(0x08);
      RCLK=0;
      RCLK=1;
}

void LED_OUT(uchar X)
{
      uchar i;
      for(i=8;i>=1;i--)
      {
            if (X&0x80) DIO=1; else DIO=0;
            X<<=1;
            SCLK = 0;
            SCLK = 1;
      }
}

unsigned char code LED_0F[] =
{

      0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x8C,0xBF,0xC6,0xA1,0x86,0xFF,0xbf
};

uint Measure(void)
{
            char Del20us=0;
            char RxBack=1;


            Tx=0;
            Th0=0;
            Tl0=0;
            TimeUp=0;


            TR0=0;
            TH0=0;
            TL0=0;




            Tx=1;
            for(Del20us=20;Del20us>0;Del20us--);
            Tx=0;


            while(Rx==0);
            TH0=0;
            TL0=0;
            TR0=1;


            while(RxBack)
            {
                              if(Rx==0||TimeUp==1)
                              {
                                             TR0=0;
                                             Th0=TH0;Tl0=TL0;
                                             TR0=1;
                                             RxBack=0;
                              }
            }
            while(!TimeUp);
            time0=(Th0*256+Tl0);
            Measureresult=((unsigned int)(344)*time0)/2000;
            if(Measureresult<30||Measureresult>900)
            {
                              Measureresult=0;
            }

            return Measureresult;
}

void T0_time() interrupt 1
{
            TimeUp=1;
}

void main()
{
            uchar ge,shi,bai,qian;
                     TMOD=0x11;
                     TH1=(65536-200)/256;
                     TL1=(65536-200)%256;

                     EA=1;
                     ET0=1;
                     ET1=1;

                     TR1=1;

            while(1)
            {
                                             ge=Measure()%1000%100%10;
                                             shi=Measure()%1000%100/10;
                                             bai=Measure()%1000/100;
                                             qian=Measure()/1000;
                                             LED[0]=ge;
                                             LED[1]=shi;
                                             LED[2]=bai;
                                             LED[3]=qian;

            }
}

void T1_time() interrupt 3
{
                              TH1=(65536-200)/256;
                              TL1=(65536-200)%256;

                              LED4_Display ();
                              delay(15);
}

作者: 人工置頂員 時間: 2021-12-23 00:46
頂一下

作者: wskufo 時間: 2021-12-23 07:32

出問題的程序代碼如下：
#include <AT89X51.H>
#define uint unsigned int
#define uchar unsigned char
sbit Tx=P2^1;
sbit Rx=P2^0;
bit TimeUp=0;
int Th0,Tl0;
unsigned int time0=0;

void main (void);
void LED4_Display (void);
void LED_OUT(uchar X);
unsigned char code fseg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
unsigned char code segbit[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
unsigned char disbuf[4]={0,0,0,0};
unsigned char code LED_0F[];
sbit DIO=P1^0;
sbit RCLK=P1^1;
sbit SCLK=P1^2;

uchar LED[8];
uint Measureresult=0;

void delay(unsigned int xms)
{
            unsigned char j;
            while(xms--)
            {
                              for(j=0;j<125;j++);
            }
}

void LED4_Display (void)
{
      unsigned char code *led_table;
      uchar i;

      led_table = LED_0F + LED[0];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x01);

      RCLK = 0;
      RCLK = 1;

      led_table = LED_0F + LED[1];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x02);

      RCLK = 0;
      RCLK = 1;

      led_table = LED_0F + LED[2];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x04);

      RCLK = 0;
      RCLK = 1;

      led_table = LED_0F + LED[3];
      i = *led_table;

      LED_OUT(i);
      LED_OUT(0x08);

      RCLK = 0;
      RCLK = 1;


      i=0xff;
      LED_OUT(i);
      LED_OUT(0x01);
      RCLK=0;
      RCLK=1;
            LED_OUT(i);
      LED_OUT(0x02);
      RCLK=0;
      RCLK=1;
            LED_OUT(i);
      LED_OUT(0x04);
      RCLK=0;
      RCLK=1;
            LED_OUT(i);
      LED_OUT(0x08);
      RCLK=0;
      RCLK=1;
}

void LED_OUT(uchar X)
{
      uchar i;
      for(i=8;i>=1;i--)
      {
            if (X&0x80) DIO=1; else DIO=0;
            X<<=1;
            SCLK = 0;
            SCLK = 1;
      }
}

unsigned char code LED_0F[] =
{

      0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x8C,0xBF,0xC6,0xA1,0x86,0xFF,0xbf
};

uint Measure(void)
{
            char Del20us=0;
            char RxBack=1;


            Tx=0;
            Th0=0;
            Tl0=0;
            TimeUp=0;


            TR0=0;
            TH0=0;
            TL0=0;




            Tx=1;
            for(Del20us=20;Del20us>0;Del20us--);
            Tx=0;


            while(Rx==0);
            TH0=0;
            TL0=0;
            TR0=1;


            while(RxBack)
            {
                              if(Rx==0||TimeUp==1)
                              {
                                             TR0=0;
                                             Th0=TH0;Tl0=TL0;
                                             TR0=1;
                                             RxBack=0;
                              }
            }
            while(!TimeUp);
            time0=(Th0*256+Tl0);
            Measureresult=((unsigned int)(344)*time0)/2000;
            if(Measureresult<30||Measureresult>900)
            {
                              Measureresult=0;
            }

            return Measureresult;
}

void T0_time() interrupt 1
{
            TimeUp=1;
}

void main()
{
            uchar ge,shi,bai,qian;
                     TMOD=0x11;
                     TH1=(65536-200)/256;
                     TL1=(65536-200)%256;

                     EA=1;
                     ET0=1;
                     ET1=1;

                     TR1=1;

            while(1)
            {
                                             ge=Measure()%1000%100%10;
                                             shi=Measure()%1000%100/10;
                                             bai=Measure()%1000/100;
                                             qian=Measure()/1000;
                                             LED[0]=ge;
                                             LED[1]=shi;
                                             LED[2]=bai;
                                             LED[3]=qian;
                           LED4_Display ();
                              delay(15);
            }
}

void T1_time() interrupt 3
{
                              TH1=(65536-200)/256;
                              TL1=(65536-200)%256;


}

作者: xianfajushi 時間: 2021-12-23 08:03
瞄了一下,首先在中斷使用延時就是頭上安頭.

作者: 188610329 時間: 2021-12-23 19:49
簡單看了下，覺得還是放棄治療，直接重寫吧，你一定要搶救一下的話，

LED4_Display (); 這個函數(shù)，把它一拆4，每次進(jìn)定時器中斷運(yùn)行 1/4 .

代碼就不幫你改了，無從下手……

作者: rooikezz 時間: 2021-12-24 16:28

188610329 發(fā)表于 2021-12-23 19:49
簡單看了下，覺得還是放棄治療，直接重寫吧，你一定要搶救一下的話，

LED4_Display (); 這個函 ...

謝謝，已重寫

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