單片機C語言: error C202: 'j': undefined identifier

ID:471161 · 發表于 2019-1-21 10:59

#include<reg52.h>                                                                                                                                              //52系列單片機頭文件
#define uchar unsigned char;                                                                                              //宏定義
#define uint unsigned int;
sbit key1=P3^4;                                                                                                                                                       //申明鍵盤口
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;
sbit dula=P2^6;                                                                                                                                                       //申明U2鎖存器鎖存端
sbit wela=P2^7;                                                                                                                                                       //申明U3鎖存器鎖存端
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};       //數碼管段選數組
void delayms(uint);
uchar numt0,num;
void display(uchar numdis)
{
                     uchar shi,ge;                                                                                                                                     //分離兩個分別要顯示的數
                     shi=numdis/10;                                                                                                                               //十位
                     ge=numdis%10;                                                                                                                                     //個位

                     P0=0xff;                                                                                                                                                       //消影
                     wela=1;                                                                                                                                                             //打開U3鎖存端
                     P0=0xfe;                                                                                                                                                       //送入位選信號
                     wela=0;                                                                                                                                                             //關閉U3鎖存端
                     dula=1;                                                                                                                                                             //打開U2鎖存端
                     P0=table[shi];                                                                                                                               //送入十位段選信號
                     dula=0;                                                                                                                                                             //關閉U2鎖存端
                     delayms(5);                                                                                                                                              //延時

                     P0=0xff;                                                                                                                                                       //消影
                     wela=1;                                                                                                                                                             //打開U3鎖存端
                     P0=0xfd;                                                                                                                                                       //送入位選信號
                     wela=0;                                                                                                                                                             //關閉U3鎖存端
                     dula=1;                                                                                                                                                             //打開U2鎖存端
                     P0=table[ge];                                                                                                                               //送入個位段選信號
                     dula=0;                                                                                                                                                             //關閉U2鎖存端
                     delayms(5);
}

void delayms(uint ys)
{
                     uint i,j;
                     for(i=ys;i>0;i--)                                                                                                                      //i=ys 即延時約ys毫秒
                                    for(j=110;j>0;j--);
}

void init()                                                                                                                                                       //初始化中斷函數
{
                     TMOD=0x01;                                                                                                                               //設置定時器0為工作方式1（0000 0001）
                     TH0=(65536-45872)/256;                                                                               //裝初值50ms一次中斷
                     TL0=(65536-45872)%256;
                     EA=1;                                                                                                                                                       //開總中斷
                     ET0=1;                                                                                                                                              //開定時器0中斷

}

void keyscan()
{
                     if(key1==0)
                     {
                                    delayms(10);
                                    if(key1==0)
                                    {
                                                      num++;
                                                      if(num==60)                                                             //到60次時重新歸0
                                                                     num=0;
                                                      while(!key1);                                                       //等待按鍵釋放
                                    }
                     }
                     if(key2==0)
                     {
                                    delayms(10);
                                    if(key2==0)
                                    {
                                                      if(num==0)                                                             //當到0時重新歸60
                                                            num=60;
                                                            num--;
                                                      while(!key2);
                                    }
                     }
                     if(key3==0)
                     {
                                    delayms(10);
                                    if(key3==0)
                                    {
                                                      num=0;                                                                      //       清0
                                                      while(!key3);
                                    }
                     }
                     if(key4==0)
                     {
                                    delayms(10);
                                    if(key4==0)
                                    {
                                                      while(!key4);
                                                      TR0=~TR0;                                                       //啟動或停止定時器0
                                    }
                     }
}

void main()
{
                     init();                                                                                              //初始化函數
                     while(1)
                     {
                                    keyscan();
                                    display(num);
                     }
}

void T0_time() interrupt 1
{
                     TH0=(65536-45872)/256;                                     //重裝初值
                     TL0=(65536-45872)%256;
                     numt0++;
                     if(numt0==20)
                     {
                                    numt0=0;
                                    num++;
                                    if(num==60)
                                                      num=0;
                     }
}

ID:87686 · 發表于 2019-1-21 16:18

#define后面不用加分號，去掉分號就可以了

ID:273904 · 發表于 2019-1-21 21:45

那兩個

ID:453974 · 發表于 2019-1-21 21:46

#include<reg52.h>                                                                                                                                              //52????????
#define uchar unsigned char                                                                                              //???
#define uint unsigned int
sbit key1=P3^4;                                                                                                                                                       //?????
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;
sbit dula=P2^6;                                                                                                                                                       //??U2??????
sbit wela=P2^7;                                                                                                                                                       //??U3??????
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};       //???????
void delayms(uint);
uchar numt0,num;
void display(uchar numdis)
{
                     uchar shi,ge;                                                                                                                                     //???????????
                     shi=numdis/10;                                                                                                                               //??
                     ge=numdis%10;                                                                                                                                     //??

                     P0=0xff;                                                                                                                                                       //??
                     wela=1;                                                                                                                                                             //??U3???
                     P0=0xfe;                                                                                                                                                       //??????
                     wela=0;                                                                                                                                                             //??U3???
                     dula=1;                                                                                                                                                             //??U2???
                     P0=table[shi];                                                                                                                               //????????
                     dula=0;                                                                                                                                                             //??U2???
                     delayms(5);                                                                                                                                              //??

                     P0=0xff;                                                                                                                                                       //??
                     wela=1;                                                                                                                                                             //??U3???
                     P0=0xfd;                                                                                                                                                       //??????
                     wela=0;                                                                                                                                                             //??U3???
                     dula=1;                                                                                                                                                             //??U2???
                     P0=table[ge];                                                                                                                               //????????
                     dula=0;                                                                                                                                                             //??U2???
                     delayms(5);
}

void delayms(uint ys)
{
                     uint i,j;
                     for(i=ys;i>0;i--)                                                                                                                      //i=ys ????ys??
                                    for(j=110;j>0;j--);
}

void init()                                                                                                                                                       //???????
{
                     TMOD=0x01;                                                                                                                               //?????0?????1(0000 0001)
                     TH0=(65536-45872)/256;                                                                               //???50ms????
                     TL0=(65536-45872)%256;
                     EA=1;                                                                                                                                                       //????
                     ET0=1;                                                                                                                                              //????0??

}

void keyscan()
{
                     if(key1==0)
                     {
                                    delayms(10);
                                    if(key1==0)
                                    {
                                                      num++;
                                                      if(num==60)                                                             //?60?????0
                                                                     num=0;
                                                      while(!key1);                                                       //??????
                                    }
                     }
                     if(key2==0)
                     {
                                    delayms(10);
                                    if(key2==0)
                                    {
                                                      if(num==0)                                                             //??0????60
                                                            num=60;
                                                            num--;
                                                      while(!key2);
                                    }
                     }
                     if(key3==0)
                     {
                                    delayms(10);
                                    if(key3==0)
                                    {
                                                      num=0;                                                                      //       ?0
                                                      while(!key3);
                                    }
                     }
                     if(key4==0)
                     {
                                    delayms(10);
                                    if(key4==0)
                                    {
                                                      while(!key4);
                                                      TR0=~TR0;                                                       //????????0
                                    }
                     }
}

void main()
{
                     init();                                                                                              //?????
                     while(1)
                     {
                                    keyscan();
                                    display(num);
                     }
}

void T0_time() interrupt 1
{
                     TH0=(65536-45872)/256;                                     //????
                     TL0=(65536-45872)%256;
                     numt0++;
                     if(numt0==20)
                     {
                                    numt0=0;
                                    num++;
                                    if(num==60)
                                                      num=0;
                     }
}#include<reg52.h>                                                                                                                                              //52????????
#define uchar unsigned char                                                                                              //???
#define uint unsigned int
sbit key1=P3^4;                                                                                                                                                       //?????
sbit key2=P3^5;
sbit key3=P3^6;
sbit key4=P3^7;
sbit dula=P2^6;                                                                                                                                                       //??U2??????
sbit wela=P2^7;                                                                                                                                                       //??U3??????
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};       //???????
void delayms(uint);
uchar numt0,num;
void display(uchar numdis)
{
                     uchar shi,ge;                                                                                                                                     //???????????
                     shi=numdis/10;                                                                                                                               //??
                     ge=numdis%10;                                                                                                                                     //??

                     P0=0xff;                                                                                                                                                       //??
                     wela=1;                                                                                                                                                             //??U3???
                     P0=0xfe;                                                                                                                                                       //??????
                     wela=0;                                                                                                                                                             //??U3???
                     dula=1;                                                                                                                                                             //??U2???
                     P0=table[shi];                                                                                                                               //????????
                     dula=0;                                                                                                                                                             //??U2???
                     delayms(5);                                                                                                                                              //??

                     P0=0xff;                                                                                                                                                       //??
                     wela=1;                                                                                                                                                             //??U3???
                     P0=0xfd;                                                                                                                                                       //??????
                     wela=0;                                                                                                                                                             //??U3???
                     dula=1;                                                                                                                                                             //??U2???
                     P0=table[ge];                                                                                                                               //????????
                     dula=0;                                                                                                                                                             //??U2???
                     delayms(5);
}

void delayms(uint ys)
{
                     uint i,j;
                     for(i=ys;i>0;i--)                                                                                                                      //i=ys ????ys??
                                    for(j=110;j>0;j--);
}

void init()                                                                                                                                                       //???????
{
                     TMOD=0x01;                                                                                                                               //?????0?????1(0000 0001)
                     TH0=(65536-45872)/256;                                                                               //???50ms????
                     TL0=(65536-45872)%256;
                     EA=1;                                                                                                                                                       //????
                     ET0=1;                                                                                                                                              //????0??

}

void keyscan()
{
                     if(key1==0)
                     {
                                    delayms(10);
                                    if(key1==0)
                                    {
                                                      num++;
                                                      if(num==60)                                                             //?60?????0
                                                                     num=0;
                                                      while(!key1);                                                       //??????
                                    }
                     }
                     if(key2==0)
                     {
                                    delayms(10);
                                    if(key2==0)
                                    {
                                                      if(num==0)                                                             //??0????60
                                                            num=60;
                                                            num--;
                                                      while(!key2);
                                    }
                     }
                     if(key3==0)
                     {
                                    delayms(10);
                                    if(key3==0)
                                    {
                                                      num=0;                                                                      //       ?0
                                                      while(!key3);
                                    }
                     }
                     if(key4==0)
                     {
                                    delayms(10);
                                    if(key4==0)
                                    {
                                                      while(!key4);
                                                      TR0=~TR0;                                                       //????????0
                                    }
                     }
}

void main()
{
                     init();                                                                                              //?????
                     while(1)
                     {
                                    keyscan();
                                    display(num);
                     }
}

void T0_time() interrupt 1
{
                     TH0=(65536-45872)/256;                                     //????
                     TL0=(65536-45872)%256;
                     numt0++;
                     if(numt0==20)
                     {
                                    numt0=0;
                                    num++;
                                    if(num==60)
                                                      num=0;
                     }
}

ID:453974 · 發表于 2019-1-21 21:46

格式的問題，真得需要注意

ID:273904 · 發表于 2019-1-21 21:47

那兩個#define后面不用分號，去掉就可以

帳號		自動登錄	找回密碼
密碼			立即注冊

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C語言: error C202: 'j': undefined identifier

評分

評分