帮帮忙看一下这个温度为什么显示不出来，是我的程序写漏了吗？

DunklopS15 · 发表于 2021-11-17 09:49

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本帖最后由 DunklopS15 于 2021-11-17 15:42 编辑

#include <reg52.h>
#include <intrins.h>
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P1^2;
sbit DQ=P1^4;

sbit led1=P0^0;
sbit led2=P0^1;
sbit led3=P0^2;
sbit led4=P0^3;
sbit led5=P0^4;
sbit led6=P0^5;
sbit led7=P0^6;
sbit led8=P0^7;
sbit buzz=P0^6;

unsigned char a,b,c,d,e,f,g,h;
static int readtemp=0;
unsigned char s[]={"Temp:"};
unsigned char str[]={"0123456789"};

//************************************************************************
void delay(unsigned int n)//Ñó3ùoˉêy
{
  unsigned i=0,j=0;
for(i=0;i<n;i++)
{
   for(j=0;j<120;j++);
}
}
//*************************ds18b20****************************************
void Write_DS18B20(unsigned char dat)
{
      unsigned char i;
      for(i=0;i<8;i++)
      {
            DQ = 0;
            DQ = dat&0x01;
            delay(5);
            DQ = 1;
            dat >>= 1;
      }
      delay(5);
}
unsigned char Read_DS18B20(void)
{
      unsigned char i;
      unsigned char dat;

      for(i=0;i<8;i++)
      {
            DQ = 0;
            dat >>= 1;
            DQ = 1;
            if(DQ)
            {
                     dat |= 0x80;
            }
            delay(5);
      }
      return dat;
}
bit init_ds18b20(void)
{
      bit initflag = 0;

      DQ = 1;
      delay(12);
      DQ = 0;
      delay(80);
      DQ = 1;
      delay(10);
      initflag = DQ;
      delay(5);

      return initflag;
}
unsigned char Readtemp(void)
{
      char temp;

      init_ds18b20();
      Write_DS18B20(0xCC);
      Write_DS18B20(0x44);
      delay(100);

      init_ds18b20();
      Write_DS18B20(0xCC);
      Write_DS18B20(0xBE);
delay(100);
      a = Read_DS18B20();
      b = Read_DS18B20();
      temp = ((b*256+a)>>4);

      return temp;

}

//*********************1602************************************
void writedat(unsigned char dat)
{
  RS=1;
RW=0;
E=0;
P0=dat;
delay(5);
E=1;
E=0;
}

void writecom(unsigned char com)
{
  RS=0;
RW=0;
E=0;
P0=com;
delay(5);
E=1;
E=0;
}
void initlcd()
{
  writecom(0x38);
writecom(0x0c);
writecom(0x06);
writecom(0x01);
}

//*************oˉêy********************************************
void display()//ÏÔê¾oˉêy
{
      unsigned int temp0=0,temp1=0,temp2=0,i=0;
      temp0=readtemp/100+'0';
      temp1=(readtemp%100)/10+'0';
      temp2=readtemp%10+'0';
      writecom(0x80);
      delay(5);
      while(s!='\0')
5 ~  w% z6 A* v' T! Y2 z       {7 }6 P, e( q0 h% [( u# [3 j
      writedat(s);
! e% L5 Y* g8 o' h" ]             delay(5);
8 K+ _9 |  r$ N* Z& f             i++;
1 Q$ d9 N0 e1 N( {       }  F' h1 Z! c8 y6 Z2 O$ N4 H

" \/ e4 H  M0 F7 o       writecom(0x80+6);  & S1 G6 }. J6 }
      delay(5);
% k! e+ u# l, `       writedat(' ');
; R1 Y' _4 a& O' ~0 t       delay(5);7 s7 e, I7 {. @
      writedat(str[temp0]);
6 }+ ^$ t- v4 }& L       delay(5);
8 t" V& i9 E5 B" G) @% I; Q. y# N       writedat(str[temp1]);/ M$ W0 n2 c! R
      delay(5);
: _8 l7 Q$ I0 h3 h, n5 I2 V- D: ~       writedat(str[temp2]);/ B8 `- h+ C% F, `4 D' n
      delay(5);
! W! t+ ]  W- @* d% o7 R  writedat('.');6 }3 C8 v( {& {1 E6 Q$ i
      delay(5);    7 I3 v$ C- q7 ]7 Q, _- {: U
      writedat('0');
9 S4 z" T/ O, n# j       delay(5);
! U8 W) h8 A( L) l       writedat(0xDF);" V( n; Y; i' R; c* o3 ?1 G. y8 m
      delay(5);       7 Q/ W1 m/ A7 `4 l9 D7 h7 ?% r& M
      writedat('C');- `8 b2 k" m1 O' L# O% q) `
      delay(5);
+ G8 g2 l/ B( x% h- r8 t: I9 `}4 e2 H: M: R3 k: m6 r( P
void displayfu()
: I  |7 h! F! r# \{
" F  H' Y& \8 o% Q. \; B, z' P       unsigned int temp0=0,temp1=0,temp2=0,i=0;
8 L, w& W# Y2 P$ }       temp0=~readtemp/100+'0';- L. z0 T) ~0 [+ D! n2 h
      temp1=(~readtemp%100)/10+'0';, p- W% H) ?2 g! @
      temp2=~readtemp%10+'0';
1 z% R  U2 j& W& }+ m* t7 E       writecom(0x80);  0 P7 g( Z, b/ U# ~/ G& t2 K# W
      delay(5);
# a# K. {& O! U9 N       while(s!='\0')
+ B6 H5 _6 p+ c) q4 @* T7 K       {
" K* q1 ^8 A( R5 \! t       writedat(s);
: {! i3 c3 s0 l$ [* D( H             delay(5);
' I% t+ D3 f& P) k0 M9 e" V             i++;
: t7 _+ `4 W0 y/ x$ b       }8 ^; @' H0 Z, p5 k' R

2 L* ]9 S; d$ n/ V- x) |  K' b* ~       writecom(0x80+6);  - U7 }; S' |5 M/ e4 Z8 R
      delay(5);) ^( y; G& \2 b' e! k4 ~) V4 c- K. [0 p0 i
      writedat('-');9 ]0 |' R2 x0 u+ y
      delay(5);
" F: E+ q2 z' m- l+ a5 m5 X, Z       writedat(str[temp0]);, l; @6 A3 Y& B$ P
      delay(5);          4 l4 w4 ^, p7 v
      writedat(str[temp1]);7 h; ]0 u  h7 g6 s8 \) @! P1 t5 Q) [
      delay(5);
+ }/ i9 x! {5 x! i  U, f6 Z2 |       writedat(str[temp2]);
3 M* m! A* m6 z! r1 ?" O% E       delay(5); * X8 @9 I2 M4 h
  writedat('.');
) m' f+ k# G7 \& U& z9 x% ~7 j       delay(5);
! r! M$ ]0 _1 b       writedat('0');# }9 k) w) Z: U) P0 f
      delay(5);
" r* P! {0 P6 V5 {& Q2 i$ `       writedat(0xDF);  @3 J( q& A" N  ^3 d! ~3 K
      delay(5);       # e- z& n5 M+ L$ C1 t- C' r4 Q
      writedat('C');8 }2 S7 `3 d; q" A4 E- }
      delay(5); # j! K! S- s' C' F7 T0 ?8 i1 C! S+ ~
}
9 s' j6 ~  w) W7 f4 p//************************Ö÷oˉêy******************************
8 b) U& a/ \4 H& l9 |2 dvoid main()
& b! _# l# ^* |1 A8 Y{& @" @4 b% [! O* w
      int i;# |1 C2 W7 G. x2 x% w8 ?0 R
      initlcd();/*/ h& f5 O7 @" i) K' V0 H( M* g
      void disply18b20Rom(char Rom);
! v- T/ h% U+ }- r: C+ _4 [Write_DS18B20(0x33);' `( D& t+ v! W; q/ ?
      delay(1);
3 F3 g8 A3 m; J& W& y4 Da =Read_DS18B20();
. A# ]" O8 n2 R/ ]3 F       b =Read_DS18B20();0 z, ?# u6 N+ u5 C3 J
      c=Read_DS18B20();
) v. j/ o. ?9 Y4 n) @% Y       d =Read_DS18B20();% b) ]( f9 d% O4 f
      e=Read_DS18B20();
( g+ B" s" E8 a       f=Read_DS18B20();
7 a& @/ x  v: Y9 d       g =Read_DS18B20();+ k6 \3 {& k6 P( z/ P4 O; s
      h = Read_DS18B20();
: i/ s* L9 n5 q, Q0 t. _       writecom(0x80+0x40);: p: G5 }$ e6 Y! `
      display18b20Rom(h);
9 y% h7 g3 t+ u* O2 Tdisplay18b20Rom(g);
& e( V' i; [- e% e( }  R. M: Tdisplay18b20Rom(f);: ~5 R4 I9 L9 j( [' `  ]
display18b20Rom(e);
5 H9 e/ y; v% [display18b20Rom(d);
0 N7 F0 M8 x$ T# I: S9 f$ udisplay18b20Rom(c);
7 U0 D9 c: D7 Vdisplay18b20Rom(b);; w& N( b7 E; j3 k
display18b20Rom(a);*/  `' U+ |; ~) ?, V- `$ i- Y; q; }: @
" B: s8 |6 V% o+ H( Y; r
      while(1)
) I) L1 q% U% d       {) j; Z, ^" T3 b- g2 L* K/ ?+ W: w
            if(Readtemp()==0)+ \: P) ^5 V* S9 q
            {) _4 [' w2 X, W2 M/ z# Z& ~
                     writecom(0x01);( ]7 w0 z1 u  [. h
                     readtemp=0;& d5 s0 X( l% S  ~; s. b; M
                     display();
: @9 A5 c+ _; z4 u' j6 U% z             }4 b' l! L6 V5 a
            else if(Readtemp()<150)
8 x* I. [$ W$ a, D0 K7 _# m             {2 R/ y8 I. r! P, H/ Y# F) i
                     readtemp=Readtemp();
  F0 s* S0 S/ v2 \                      display();. V, [% l" u  j! y0 N* T. {
            }
) O) w; t% V; l" z- ~             else
; Z7 D9 w; f. Q! }  l* r, s( e4 H7 H             {5 y2 F/ c+ C; m! V
                     int a=0;  _8 D! ~3 A6 S
                     a=Readtemp();: f) a" C; I1 [! D; @- A0 \5 e4 ~
                     readtemp=a-257;: ^3 k5 K$ g6 M3 {
                     displayfu();/ c  P9 c3 L0 e1 Y
            }0 Q4 h6 D* X  Q0 ~) l: y! |+ z
      if((readtemp>=20)||(readtemp<=10))
3 f9 i. y  H& o$ t             {1 E9 n4 D- @; U. }
                     for(i=0;1>0;i++)
% f; S6 a9 M# d4 S             {
6 @; o: \1 P& k/ r6 |                      led1=1;led2=1;led3=1;led4=1;led5=1;led6=1;led7=1;led8=1;7 u% L1 O8 \$ s4 V* d
            buzz=1;
8 J8 N- B( Z  G. l/ x6 R! |+ ~# H             delay(500);# \( i5 i4 g! L$ }8 v! y" Z) L
                     led1=0;led2=0;led3=0;led4=0;led5=0;led6=0;led7=0;led8=0;( i1 l8 T& l6 u8 {( t/ o- Y( M( O
            buzz=0;4 P: Y; P3 A' a) i
                     delay(500);) \" G7 l- r0 v, `) |' a
            }
4 P, x0 e1 A, x" [$ _  j       }$ E  N0 M$ g8 [* E" U' r2 K& ?5 r
      }
& ?( E; Z: u. v" t8 b}6 _4 k" h7 ]0 x
' Y0 b: O; r1 V8 C1 q
2 X6 Z0 u, T& ?8 R

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