單片機(jī)程序一直編譯不成功 missing function-prototype

ID:878420 · 發(fā)表于 2021-1-17 20:24

以下是抄書(shū)上的程序，keil一直編譯不過(guò)，新手小白不知道什么原因，自己對(duì)照書(shū)一直找不出錯(cuò)誤。

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
sbit led1=P1^0;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
void delayms(uint);
void dispaly(uchar,uchar);
uchar num,num1,num2,shi,ge;

void main()
{
      TMOD=0x11;
      TH0=(65536-45872)/256;
      TL0=(65536-45872)%256;
      TH1=(65536-45872)/256;
      TL1=(65536-45872)%256;
      EA=1;
      ET0=1;
      ET1=1;
      TR0=1;
      TR1=1;
      while(1)
      {
                     display(shi,ge);
      }

}

void display(uchar shi,uchar ge)                               //μ÷óÃÏÔê¾×óoˉêy
{
      dula=1;
      P0=table[shi];                                                             //μúò»¸öêyÂë1üÏÔê¾ê®Î»êy¾Y
      dula=0;
      P0=0xff;                                                                      //1Ø±ÕËùóDÏÔê¾
      wela=1;
      P0=0xfe;
      wela=0;
      delayms(5);

      dula=1;
      P0=table[ge];                                                          //μú¶t¸öêyÂë1üÏÔê¾¸öÎ»êy¾Y
      dula=0;
      P0=0xff;                                                                //1Ø±ÕËùóDÏÔê¾
      wela=1;
      P0=0xfd;
      wela=0;
      delayms(5);
}

void delayms(uint xms)                                                       //μ÷óÃmsÑóê±×óoˉêy
{
      uint i,j;
      for(i=xms;i>0;i--)
            for(j=110;j>0;j--);
}

void T0_time() interrupt 1
{
      TH0=(65536-45872)/256;
      TL0=(65536-45872)%256;
      num1++;
      if(num1==4)
      {
               num1=0;
            led1=~led1;
      }
}

void T1_time() interrupt 3
{
      TH1=(65536-45872)/256;
      TL1=(65536-45872)%256;
      num2++;
      if(num2==20)
      {
            num2=0;
            num++;
            if(num==60)
                     num=0;
            shi=num/10;
            ge=num%10;
      }
}

ID:878420 · 發(fā)表于 2021-1-17 20:25

請(qǐng)求大師傅告知一下。
keil

compiling 數(shù)碼管2.c...
數(shù)碼管2.c(31): warning C206: 'display': missing function-prototype
數(shù)碼管2.c(31): error C267: 'display': requires ANSI-style prototype
數(shù)碼管2.c(38): error C231: 'display': redefinition
數(shù)碼管2.c(56): error C231: 'display': redefinition
Target not created.
Build Time Elapsed: 00:00:00

ID:878420 · 發(fā)表于 2021-1-17 20:26

compiling 數(shù)碼管2.c... 數(shù)碼管2.c(31): warning C206: 'display': missing function-prototype 數(shù)碼管2.c(31): error C267: 'display': requires ANSI-style prototype 數(shù)碼管2.c(38): error C231: 'display': redefinition 數(shù)碼管2.c(56): error C231: 'display': redefinition Target not created. Build Time Elapsed: 00:00:00

ID:878420 · 發(fā)表于 2021-1-17 21:03

找到錯(cuò)誤dispaly寫(xiě)錯(cuò)了，正確display

ID:798201 · 發(fā)表于 2021-1-22 14:23

void display(uchar shi,uchar ge);

要放到主函數(shù)前面聲明：

#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit dula=P2^6;
sbit wela=P2^7;
sbit led1=P1^0;

void display(uchar shi,uchar ge);

uchar code table[]= {
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71
};
void delayms(uint);
void dispaly(uchar,uchar);
uchar num,num1,num2,shi,ge;

void main()
{
TMOD=0x11;
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
EA=1;
ET0=1;
ET1=1;
TR0=1;
TR1=1;
while(1)
{
      display(shi,ge);
}

}

void display(uchar shi,uchar ge)                               //μ÷ó???ê?×óoˉêy
{
dula=1;
P0=table[shi];                                                             //μúò???êy??1ü??ê?ê???êy?Y
dula=0;
P0=0xff;                                                                      //1?±??ùóD??ê?
wela=1;
P0=0xfe;
wela=0;
delayms(5);

dula=1;
P0=table[ge];                                                          //μú?t??êy??1ü??ê?????êy?Y
dula=0;
P0=0xff;                                                                //1?±??ùóD??ê?
wela=1;
P0=0xfd;
wela=0;
delayms(5);
}

void delayms(uint xms)                                                       //μ÷ó?ms?óê±×óoˉêy
{
uint i,j;
for(i=xms; i>0; i--)
      for(j=110; j>0; j--);
}

void T0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
num1++;
if(num1==4)
{
      num1=0;
      led1=~led1;
}
}

void T1_time() interrupt 3
{
TH1=(65536-45872)/256;
TL1=(65536-45872)%256;
num2++;
if(num2==20)
{
      num2=0;
      num++;
      if(num==60)
         num=0;
      shi=num/10;
      ge=num%10;
}
}

ID:798201 · 發(fā)表于 2021-1-22 14:24

void display(uchar shi,uchar ge);
要放到主函數(shù)前面聲明

ID:824490 · 發(fā)表于 2021-1-22 15:37

void main()這個(gè)主函數(shù)只能在C文件的最末端。不然就要把其它函數(shù)在C文件的前端聲明一次。這是C的規(guī)則。

ID:878420 · 發(fā)表于 2021-1-23 19:32

顯示子函數(shù)在主函數(shù)前面已經(jīng)聲明，顯示英文寫(xiě)錯(cuò)了。謝謝各位工程師！

ID:722618 · 發(fā)表于 2021-1-25 11:45

函數(shù)沒(méi)有定義，或者是苦衷沒(méi)有相應(yīng)函數(shù)。

ID:879537 · 發(fā)表于 2021-1-27 15:22

void dispaly(uchar,uchar); 寫(xiě)錯(cuò)了，是display

ID:976415 · 發(fā)表于 2022-3-3 23:47

#include <AT89X51.h>
bit dsinit();
void write_data();
unsigned char readdata();
sbit ds=P3^3;
unsigned int i;
unsigned int t1;
unsigned char t2;
unsigned char t;
int j;
unsigned char dat,rdata;
bit b;

void main()
{
while(1)
{
dsinit();
write_data(0xCC);
write_data(0x44);
dsinit();
write_data(0xCC);
write_data(0xbe);
t1=readdata();
t2=readdata();
t2=(t2<<8)|t1;

}

}

bit dsinit()
{
ds=0;
i=60;
while(i>0)i--;
ds=1;
i=4;
while(i>0)i--;
while(!ds);
i=60;
while(i>0)i--;
}

void write_data()
{
for(j=0;j>0;j--)
{
b=dat&0x01;
dat>>=1;
if(b)
{
ds=0;
i=2;
while(i>0)i--;
ds=1;
i=7;
while(i>0)i--;
}
else
{
ds=0;
i=8;
while(i>0)i--;
ds=1;
i++;i++;
}
}}

unsigned char readdata()
{

for(j=8;j>0;j--)
{
rdata>>=1;
ds=0;
i++;
ds=1;
i++;i++;
if(ds)
rdata=rdata|0x80;
i=8;
while(i>0)i--;
ds=1;
}
return rdata;
}

帳號(hào)		自動(dòng)登錄	找回密碼
密碼			立即注冊(cè)

久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

單片機(jī)程序一直編譯不成功 missing function-prototype