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標(biāo)題: 001.C(12): warning C206: 'WriteCom': missing function-prototype [打印本頁(yè)]

作者: zhang092413253 時(shí)間: 2017-4-20 21:35
標(biāo)題: 001.C(12): warning C206: 'WriteCom': missing function-prototype
#include<reg52.h>
#define uchar unsigned char
extern uchar disp_value[5];
extern uchar key_number;
extern uchar code  DC_disp3[];
uchar code AC_disp[]="AC VOL Measure ";
uchar code AC_disp2[]="value=       ";
void AC_VOL_measure(void)                   //交流電壓測(cè)量函數(shù)
{
uchar  ADTemp,num;
float ValueTemp;
WriteCom(0x01); //清屏
         WriteCom(0x80);         //顯示
for(num=0;AC_disp[num]!='\0';num++)
{
WriteData(AC_disp[num]);
Delay(10);
}
WriteCom(0x80+0x40);    //顯示
for(num=0;AC_disp2[num]!='\0';num++)
{
WriteData(AC_disp2[num]);
Delay(10);
}

do{
         s1=0;    //選擇200v最高檔
      s2=0;
      s3=1;
Delay(50);
ADTemp=ADSample(AC_VOL_adder);
if(ADTemp>253)    //當(dāng)超過(guò)量程時(shí)，顯示為1
{    WriteCom(0x80+0x46); //顯示
for(num=0;DC_disp3[num]!='\0';num++)
{
WriteData(DC_disp3[num]);
     Delay(10);
}
}
else
{
ValueTemp=ValueConver(ADTemp);    //測(cè)量的電壓值轉(zhuǎn)換
        ValueTemp=ValueTemp*100;    //電壓值乘以檔位
FloatToChar(ValueTemp);    //電壓值轉(zhuǎn)換為字符串
   WriteCom(0x80+0x46); //第二行顯示電壓值
for(num=0;num<6;num++)
{
WriteData(disp_value[num]);
Delay(10);
}
   WriteData('V');
WriteData(' ');

}

}  while((ADTemp>20)&&(key_number==2));

   do
{
        s1=0;    //選擇20v檔
      s2=1;
      s3=0;
Delay(50);
ADTemp=ADSample(AC_VOL_adder);       //起動(dòng)AD進(jìn)行采樣
ValueTemp=ValueConver(ADTemp);    //AD進(jìn)行轉(zhuǎn)換
ValueTemp=ValueTemp*10;    //電壓乘以檔位
FloatToChar(ValueTemp);    //電壓轉(zhuǎn)換為字符串
      WriteCom(0x80+0x46);    //第二行顯示所測(cè)電壓值
for(num=0;num<5;num++)
{
WriteData(disp_value[num]);
     Delay(10);
}
WriteData('V');
WriteData(' ');
      } while((ADTemp>24)&&(ADTemp<253)&&(key_number==2));
do
   {
        s1=1; //選擇2V檔
      s2=0;
      s3=0;
Delay(50);
ADTemp=ADSample(AC_VOL_adder); //起動(dòng)AD進(jìn)行采樣
ValueTemp=ValueConver(ADTemp);    //電壓值轉(zhuǎn)換為字符串
FloatToChar(ValueTemp);
   WriteCom(0x80+0x46);
for(num=0;num<5;num++)
{
WriteData(disp_value[num]);
Delay(15);
}
WriteData('V');
WriteData(' ');
   } while((ADTemp<253)&&(key_number==2));

}

001.C(12): warning C206: 'WriteCom': missing function-prototype
001.C(12): error C267: 'WriteCom': requires ANSI-style prototype

這是怎麼回事，求改進(jìn)

作者: fjdksla 時(shí)間: 2017-4-21 08:57
完整的程序呢？WriteCom的函數(shù)呢？

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