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標(biāo)題: 為什么Keil只有1個(gè)提醒，硬件無法顯示？求助 [打印本頁]

作者: 叮當(dāng)szh 時(shí)間: 2019-3-23 20:19
標(biāo)題: 為什么Keil只有1個(gè)提醒，硬件無法顯示？求助
#include <reg52.h>
#include <intrins.h>

typedef unsigned char INT8U;
typedef unsigned char uchar;
typedef unsigned int INT16U;
typedef unsigned int uint;
sbit DS = P3^6;
//sbit DU = P1;
//sbit WE = P2;
uchar code table[]={
//0  1  2    3    4    5    6    7    8
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80,
//9    A    B C  D E  F  -  . 關(guān)顯示
0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E, 0xBF, 0x7F, 0xFF};
uchar code T_COM[] = {0xfe, 0xfd, 0xfb, 0xf7,};//數(shù)碼管位碼
/*us延時(shí)函數(shù)，執(zhí)行一次US--所需6.5us進(jìn)入一次函數(shù)需要11.95us*/
void Delay_us(uchar us)
{
while(us--);
}
/*====================================
函數(shù) ： delay(uint z)
參數(shù) ：z 延時(shí)毫秒設(shè)定，取值范圍0-65535
返回值：無
描述：12T/Fosc11.0592M毫秒級(jí)延時(shí)
====================================*/
void delay(uint z)
{
uint x,y;
for(x = z; x > 0; x--)
  for(y = 114; y > 0 ; y--);
}

void Display(INT16U Value)
{
  P1 = 0XFF;
  P2 = T_COM[1];
  P1 = table[Value/100];
  delay(5);
  P1 = 0XFF;
  P1 = 0XFF;
  P2 = T_COM[2];
  P1 = table[Value%100/10]&0x7f;
  delay(5);
  P1 = 0XFF;
  P1 = 0XFF;
  P2 = T_COM[3];
  P1 = table[Value%10];
  delay(5);
  P1 = 0XFF;
  }
bit ds_init()
{
  bit i;
  DS = 1;
  _nop_();
  DS = 0;
  Delay_us(75);
  DS = 1;
  Delay_us(4);
  i = DS;
  Delay_us(20);
  DS = 1;
  _nop_();
  return(i);
}
void write_byte(uchar dat)
{
  uchar i;
  for(i=0;i<8;i++)
  {
DS = 0;
_nop_();
DS = 1;
DS = dat & 0x01;
Delay_us(10);
DS = 1; //釋放總線準(zhǔn)備下一次數(shù)據(jù)寫入
_nop_();
dat >>= 1;
  }
}
uchar read_byte()
{
  uchar i, j, dat;
  for(i=0;i<8;i++)
  {
DS = 0;
_nop_();
DS = 1;
_nop_();
j = DS;
Delay_us(10);
DS = 1;
_nop_();
dat = (j<<7)|(dat>>1);
  }
  return (dat);
}
void main()
{
  uint i=0;
  uchar L, M;
/*  ds_init();
  write_byte(0xcc);
  write_byte(0x4e);
  write_byte(0x7f);
  write_byte(0xf7);
  write_byte(0x1f);
  ds_init();
  write_byte(0xcc);
  write_byte(0x48);*/
  while(1)
{
ds_init();
write_byte(0xcc);
write_byte(0x44);
ds_init();//初始化DS18B20
write_byte(0xcc);
write_byte(0xbe);
L = read_byte();
M = read_byte();
i = M;
i <<=8;
i |= L;
i = i * 0.0625 * 10 + 0.5;
}
   {
      Display(i); delay(10);
   }
}

linking...
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_DISPLAY?WHENG
Program Size: data=11.1 xdata=0 code=1193
creating hex file from "1"...
"1" - 0 Error(s), 1 Warning(s).

作者: admin 時(shí)間: 2019-3-24 02:10
您這個(gè)問題給的信息不全，估計(jì)是沒人能回答得了的，先轉(zhuǎn)移到冷門區(qū)了，自行點(diǎn)擊編輯按鈕補(bǔ)充一下吧，審核員會(huì)幫你重新轉(zhuǎn)到熱門問答區(qū)的

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