II2C总线芯片 24c0x读写程序

Demyar · 发表于 2019-1-4 09:40

EDA365欢迎您登录！

您需要登录才可以下载或查看，没有帐号？注册

x

II2C总线芯片 24c0x读写程序
! r/ }9 D( K# A" y, h! |# X

#include<reg51.h>6 ^7 V# O& v7 I! S6 f- T
#include"intrins.h" //  _nop_();- u# S* K, z( J8 Z
#define uint unsigned int
- H6 {6 ?: M& Q/ C0 g1 U6 Q#define uchar unsigned char
% P. O  V) H, S; G; [. \7 ?sbit scl=P2^1;$ ~1 B4 n# c3 C) x# c) a
sbit sda=P2^0;
  g6 l- d1 ^6 j- ]0 c8 rbit write=0;+ C. U0 t& A  ^) W+ u( ?
uint num,num1;2 S2 d+ S, d4 X/ w2 k
uchar ge,shi;3 q: J6 a9 `* t# j
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,
9 @- }5 ?. F1 n0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};# `  v) H  _6 [3 j8 h
void delay_ms(uint Z)
/ D3 r2 [- [' x2 k* [{6 W) m3 \; i9 w- Y4 S
      uint x,y;
' ]' V% b2 H4 W- D0 u       for(x=Z;x>0;x--)
/ o9 ~! @2 e1 j9 |" F& s$ d0 Z4 ~       for(y=110;y>0;y--);& i" `3 f, Z- Y
}$ F2 I- V8 G- e! |  ^- j
/*****ÅäÖÃIICD¾Æ¬**********/, l; P2 X) S- L
void delay()
5 [( ~; N3 C8 G5 O{6 b" h1 A% [* r1 r0 j- ?9 {
      _nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
7 H" j9 A; @, p7 ^0 {6 ^}
2 v3 X: T4 I7 ]4 h% Wvoid start()//¿aê¼, m) v2 Z+ F9 j4 Q
{# }- }  H, G% Y' L& C
      sda=1;
( F! R# K( B4 |/ J       delay();
- p5 X+ `% g" C' |       scl=1;
8 V) K8 ?3 t7 Z; W! F/ l' s5 ~       delay();1 a5 \) C7 w, e2 ]+ Y" j
      sda=0;( e5 w/ A9 M% _& F4 E+ W
      delay();
8 O, Z* z4 \: Q: U. h/ v}
9 d5 R. G) q5 v9 L- H  ?' Z+ ivoid stop()
. h( H  P- g/ k; T$ S. P; T  \{+ ~1 @' `; ]" l1 Z$ C" [- ^
      sda=0;: i  A1 @8 h8 |
      delay();
% s5 g; v% r8 X# h  N       scl=1;
% E+ ~+ B0 N& @" d       delay();
/ |8 y* C& @6 k( |0 U! G       sda=1;
) ^" I/ w# M+ t+ J* H! T* e       delay();
5 F4 a* H0 e2 ?9 O, i}
5 Y! e- i  u+ j1 e: g; s8 I6 nvoid respons()
8 f9 f/ N  [. q% u! a{6 T  z8 I+ e: P! i6 N1 R
      uchar i;
2 `, D- q% {! j; M% O       scl=1;
+ |" Z( ?% g$ x2 F* W" Q: V       delay();
$ z( _8 _& F$ n6 W3 b0 T       while((sda==1)&&(i<250))* \( M/ b* v$ A1 U0 I
            i++;
( u& M2 O2 A, \* O$ a9 t       scl=0;
! Z2 q3 i+ O% q* L, t  h- `. h3 l       delay();8 V9 a+ x6 f$ ]
}: m6 t; y( C1 t3 W# @
void init(). n  }2 ?% j8 T7 P; y  `: b/ ~
{7 w: X# m3 i0 X- h  ]/ Q* S
      sda=1;) r  {# S5 H9 b7 G4 [
      delay();8 G9 ?2 a2 ?+ u" O6 D, c
      scl=1;' R# ?7 [' Z& ~, H) X' m
      delay();& ~/ }9 r% }6 q" J
}0 @  X& E7 E4 o5 q8 ?  Y" [
void write_byte(uchar date)
; E2 B+ T* r% d8 x0 a* V: M) E1 e{: W& }: v  i; }; [, b
      uchar i,temp;
- m" d, E- x  k, B4 d       temp=date;) k5 Y' x$ W0 K" q& J
      for(i=0;i<8;i++)
& b, j3 A/ m1 _. `! W, _       {( ~3 i- {+ q2 S5 ^# N
            temp=temp<<1;
+ O1 ~. \4 B6 x" i% G' q/ `( T& i             scl=0;
& _6 b+ L  ~  ]: m; h8 r             delay();
/ A! S/ C& g' f* p& i             sda=CY;3 e! M/ X% m& ?! f+ a0 h
            delay();6 c0 d  m: B6 G* c) {
            scl=1;! v+ [% C; O( ^3 R
            delay();7 H, p# o7 Z0 \# Z7 ?
      }. A  N6 l8 T- N/ I2 t" o) D3 Z
      scl=0;
( B5 q' a" H  o9 n) S       delay();
  k% c7 D! w) M. m; P& D       sda=1;/ S6 Y4 u: v3 R2 v, _
      delay();
. x. v0 [) H& p4 i}
3 Z0 g  K* D/ }) }6 fuchar read_byte()
; M; P, v  x( M9 b1 r- }+ i5 ]  A{, ~# t# F- a* c) d' \
      uchar i,k;! [! r0 N! S$ z. p/ `
      scl=0;
% y9 ?) A6 @% d6 d' K0 w       delay();% k3 X9 @7 {( K3 k5 W" _- L% g
      sda=1;
4 k4 O! m. y2 z! [2 o       delay();
; `* ~' x9 {: a! M/ W2 X       for(i=0;i<8;i++)
  b. n0 P! ?$ m       {% s- ?1 U, i% k, d3 `
            scl=1;- F# k  P3 L) |6 v, F
            delay();
/ }5 [, c% ?- ^% D0 z       k=(k<<1)|sda;///////
6 G1 v0 t3 V- h. F& ^( G  h5 j5 {             scl=0;
6 j- F; @0 F& N% y3 D" l             delay();1 Y! p4 u4 t. j/ C
      }/ g' h3 G* T: ]) B5 i- n5 l
      return k;
3 U5 e$ b% N5 s' Q6 _' G( y  u}
  G" `+ e5 w# i2 B6 G% U5 c7 p: R1 }; R/ t. U: i5 R
void write_add(uchar address,uchar date)  b  w' W! b$ ?$ a" ^, p6 H
{
/ @# Q1 H3 u- W8 ^1 f+ h) I       start();
$ Z" O" @7 a: c( x       write_byte(0xa0);9 ]8 A/ F: g8 ]1 X- d  U6 e3 q
      respons();* N2 K2 l; @. S6 p
      write_byte(address);
( c  O4 _- S/ Y* y3 ]6 _8 q       respons();
. J: e9 s7 h5 v6 e9 \5 k       write_byte(date);, _- _/ e2 [! F  }1 M8 t' V6 O
      respons();
! z. u+ o& a5 u( }, V( p5 r       stop();5 M. M9 }% Q4 N* J* R
}& N/ D) ^$ y* e) l
uchar read_add(uchar address)3 I1 S4 V  J( o6 ~- q6 q* B( b
{
+ P, H# B5 k: [2 P, ?# e       uchar date;
) d5 b; o( K) P' l+ M       start();* x- f, i8 f! M0 Z% J) f
      write_byte(0xa0);
6 }" ?2 h7 q; Q1 C1 Z       respons();! |! |- R3 A. x* m6 I+ h, w! p
      write_byte(address);
4 [' L1 m6 F- s- J2 X6 F       respons();+ D" C- a2 {4 \/ j. s8 R7 H7 b6 T- m
      start();
0 B1 d9 r( w" t; D  N9 s8 n  h       write_byte(0xa1);
% c$ |/ q  g: n' P& K       respons();
8 u% U. q7 V3 P3 v% R; I       date=read_byte();
8 ]# \1 A/ n% \2 ^       stop();
) m. J3 L6 @8 F3 s2 B! V       return date;" o. z; H4 N: `
}6 S& f2 S1 w5 K/ J6 o& t, \+ J9 N
/************êyÂë1üÏÔê¾oˉêy*********************/
; x6 u, O& h! p3 z; }" |void display(uchar shi,uchar ge); _" O* h7 F6 M- Q! \/ {
{7 M7 Y! C3 w# b2 t3 u
      P1=0xdf;- Z( _( T4 X- S2 L- i0 x
      P0=table[shi];; |6 Q% J4 ]) k7 x" i
      delay_ms(5);! o+ K' d1 R, {$ Z

  s2 C7 e, G, u" ^' C; u       P1=0xef;
9 x0 G0 ^" R* ^9 n: K7 m       P0=table[ge];6 `/ e6 R( ^) t3 [
      delay_ms(5);# t* r. }% w& }9 [

0 {% D4 L& i' l! o0 f* {2 ]
. `) ~3 A2 v8 A  K) P. i}' O0 ^" e+ ?& u& o
/*********Ö÷oˉêy************************/5 P* r# V2 D0 [* `5 Z
void main()
, U+ N/ P6 i" `  _! g2 _" d{6 b2 v: C% F- G0 s- u( T4 ~
      init();0 e3 u: T0 k; r) }4 {  X+ E. x
      num1=read_add(2);4 N& @/ k9 r1 Z0 y+ d9 J$ S$ D2 |
      if(num1>100)8 n4 c" a7 m5 s( w- j
            num1=0;2 C1 {  U% \+ a9 v& n6 ^
      TMOD=0x01;
$ [1 j$ F( M: P( o7 H: `, A. [' ?       TH0=(65536-50000)/256;  e6 w0 Y! g% L. F: }5 J1 U
      TL0=(65536-50000)%256;: e/ _( a# D. `6 E  P1 n
      ET0=1;" R$ Y, P4 M. ^5 e
      EA=1;
! y6 `- E3 P; P2 m( |7 x       TR0=1;7 N' K- P5 V# v% ]. q
      while(1)# o9 q. Q3 A) O! T* [) n8 ]8 d7 R
      {3 e5 K1 W5 C" K; b6 H
            display(num1/10,num1%10);
4 n* d4 g' b; E             if(write==1)- ?$ F8 g9 B0 y. c
            {
# A' o, \: E. P5 A# T* \                      write=0;
* w9 Z, b2 I, a# R0 V6 J                      write_add(2,num1);# L/ T: V$ N7 U) O, `/ [0 Z
            }9 U7 V- I" V6 f9 l; x4 l/ `; ^2 }
      }1 X7 c$ v) e1 X) h- y. J6 I4 y
}% f( H- Q- f% e# k& J- N3 }( ^
/*******ÖD¶Ïoˉêy*****************************/% p  f- ?. |+ _- R9 K
void time0() interrupt 1
" h6 e( g0 O8 d: m' H9 S{4 I# }  @  ?& Z' c  ?' f- L
      TH0=(65536-50000)/256;
( Q" C- {% J1 _+ k: }( h       TL0=(65536-50000)%256;
# c; H7 a. V6 k6 C) p       num++;  m& @( B, Z, I8 R
      if(num==20)# a6 l- z% Z4 I' L9 o0 c3 M) c
      {/ M/ C9 D9 H& ^# H7 b
            num=0;2 J: t8 Q3 u( {: I
            num1++;0 `( y2 r/ }  {& R# D
            write=1;7 q1 @& v% B4 c; D6 r+ j
            if(num1==100)
% A4 R) x( K$ q7 e7 @                      num1=0;: v6 k2 U  c0 b$ U! g
      }  F1 ~, e5 X8 H. n
}
( K( C4 Z& C" _& J+ ?
游客，如果您要查看本帖隐藏内容请回复
1 B+ F( u* X4 l4 L6 e3 ]5 Z" Z; z7 P/ a

Mhza · 发表于 2019-1-4 18:11

看看

帐号		自动登录	找回密码
密码			注册

II2C总线芯片 24c0x读写程序

EDA365欢迎您登录！

浏览过的版块

推荐内容 /1