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//=========================================================
3 l3 N5 i' X1 S" [#ifndef _tm1650_
/ q' h0 A) E. q2 r- a5 C( y: y7 t#define _tm1650_4 h) R; g8 v8 O, ^. j/ @
//=========================================================
7 L$ g# h2 j1 {: v#include "main.h"1 \) q% B4 ~/ u7 j+ K3 {
//=========================================================
" p% h- n9 H- p3 o# d3 F2 T) Eextern u8 DispData[];
2 ~7 d+ L% _9 \# u//=========================================================" S; J( ^/ u" @2 D* J0 m
void IIC_Start(void) //开始信号
# x$ C2 D. u0 T/ J8 @& M{
1 y* k8 Y2 q: [: J+ H' z9 v //P_SDAUP = 1;
+ ^% {2 w- b9 m0 ]8 b P_SCLC = 0;
: d" v `% u. c* ^, ` P_SDAC = 0;
5 M4 A, M; z: z+ c; H* A P_SDA = 1;
/ A3 ?+ o3 {5 w- V8 m' I+ x' Q P_SCL = 1;
, h% R0 q3 V! U8 c+ w* W Delay(50);' y% c* {: y) G! V: e
P_SDA = 0;* n W* l4 {' a6 q& T( J
Delay(5);
5 b3 T6 o9 [+ U+ u$ y, l5 } P_SCL = 0;
8 K1 |$ v0 |8 p* ~" g ~0 \5 Z Delay(5);. [. A$ {6 B E9 ~ p
}) r* L7 L9 g* N* S! P( c
//=========================================================
( l$ E$ X# J' T: y, I# I6 Cvoid IIC_Stop(void) //停止信号7 J6 m$ @7 q1 @8 F3 P
{
# ?0 ~9 z. T1 z+ j% h5 y& q P_SCLC = 0;
. |* Z8 }7 T$ F2 A' w3 [. R P_SDAC = 0;& f# A6 o. }' j* o, m
P_SDA = 0;
; H! Y. S5 {9 n9 M8 P P_SCL = 0;
j2 C" M6 V6 ?' N1 r" O$ P' R* R Delay(5);
7 v/ ~( g$ `. q( C9 r7 ? P_SCL = 1;9 a4 H! q7 Y8 k" s( s: l: w) K
Delay(5);7 y; Y# T+ s; d2 s1 h
P_SDA = 1;
, I S- F4 o( L; x& ?4 ]) } Delay(50);, H. b- [, F- Y2 W8 D0 g
}7 u/ `- {1 e7 W+ B4 b
//=========================================================
0 j0 O( ?6 P. I. Fu8 IIC_Send_Byte(u8 buf)& ]' h1 n2 j' @6 A" o
{7 E0 f+ J$ {; ]# {* u; a
u8 i, ack;( c' Z& |" u) R& r% A. ?( i
u8 time;3 F. G) O2 X* V; d+ w
P_SCL = 0;
8 f% `! q" L" S* D% K$ B1 L! M P_SCLC = 0;
' i1 u1 N8 }- p7 A! } P_SDA = 0;
+ ?( `0 P y M P_SDAC = 0;" m- a9 \# b h) C7 M
for (i = 0; i < 8; i++) //下降沿发送数据" \: Z) o* e; h
{/ _: @" H# ^5 t9 `* I
Delay(5);' B& N( E" t1 ]6 b' z: d3 }
if (buf & 0x80) //从最高位开始发送
. k8 P) v! o& T% V2 N; y% p y7 |- v P_SDA = 1;0 L. ~, A% A5 U7 S) b+ L6 ?* t
else
: U& \8 H& g4 q3 [. X! e P_SDA = 0;, g+ r7 V: w4 x! N- E: ?0 @
buf = buf << 1;6 ]: Q/ z. U- |) m
Delay(5);
& W4 g: @! z$ h! K P_SCL = 1;
& I) }2 T) R! S& @ Delay(10);, Y' z8 n \& g
P_SCL = 0;( ]# Y& o& T1 r' z) b8 Y
}
0 w4 ?2 {, d: t1 w Delay(10);, `0 T# ^' [1 A4 D; v0 b/ k0 ]8 }
P_SDA = 0;: W6 ^+ A, R. A* b2 f z6 H
P_SDAC = 0xFF;
' b3 K* ?7 |3 a; T Delay(10);
+ p# W/ x: D' }( Z9 ` P_SCL = 1;
2 d- |* Y! d' F5 I& l" t$ W Delay(10);
- f( z: |7 t b7 q time = 0;
6 g2 z1 ~/ a; ~( e while ((P_SDA) && (time < 50))
! P$ w/ I0 \& x- d& k time++;
" p" T& o, H) E if (time < 50)
5 e. s9 e0 S2 ?' W ack = 1;
. X) \& A, r$ z6 F4 l# B. P. @ else+ w6 p3 Q$ A5 R2 R/ V: y O3 d8 Y7 ~
ack = 0;! V& D6 d `" D
P_SCL = 0;' M: _5 p' L, Y+ s7 B. w& i
Delay(5);. Z& @* N h$ ?# t: v4 m X
P_SDA = 0;
S' r% _+ B& q9 \: @ s P_SDAC = 0;
, v7 A1 n; m3 F( J7 k Delay(5); ]9 K$ A9 D+ J& F" C
return ack;; S0 _# v/ ~ g2 |4 c0 T. F) @
}
- X( h, e7 a; D4 ~//=========================================================
* X+ B, a; X: g/ y* A#if 09 s" w3 ^2 A' x+ N
u8 IIC_Read_Byte(u8 ack)! l3 N( A) @ o5 O; U( M! L2 ^
{
$ ]' O/ B5 [3 t6 _ u8 i;
) _% N: f4 C: O9 @+ V u8 buf = 0;, H( _. n0 b! V7 t' t/ D
P_SCL = 0;
' @9 z$ J0 s/ M- E P_SCLC = 0;
# |5 ?1 H% \$ L' A P_SDA = 0;/ d( h& @7 Z9 j
P_SDAC = 0xFF;
6 U1 W) i5 n4 { for (i = 0; i < 8; i++)( f9 M3 i o4 J0 e! P; G' g
{+ I ?& w( a3 A; e$ m
Delay(10);2 `$ h1 [; e0 h. z5 Z [
P_SCL = 1;
, _! K: r6 W; X Delay(5);, l6 Q% |8 W7 c3 R$ y o
buf = buf << 1;
7 y& ]& T% s: s; L if (P_SDA)7 b- i$ ?6 \1 F m6 z$ t
buf |= 0x01;
+ X$ c. Q! [. W9 }8 \9 y) E* v& G Delay(5);
0 D1 B' z" @: A; i P_SCL = 0;
) u( l" r* g+ Z' h- P }; F( e6 ^+ ]) v9 \# ]/ a
P_SDAC = 0;
( i. t9 h! y+ \" C6 @$ p3 j6 g P_SDA = !ack;' Y2 A! L; }! X0 a9 V9 V
Delay(10);
5 w" I" W2 v! m& W7 \ P_SCL = 1;
% Q: I1 E' n1 m4 ]- |9 a$ z- ] Delay(10);' w( Y8 v: w1 s
P_SCL = 0;
: S$ g. ]/ @. @7 i L Delay(10);
! ^; ]7 f0 }% S return buf;- d1 {3 T0 C- ^& e: a6 R# g6 c
}
, _. @& u* p: M4 A& F9 C2 p#endif2 A5 D' @" r3 ?$ {, J
//=========================================================
3 |+ G/ R7 I% S1 mvoid Write_1650(unsigned char addr, unsigned char iicd): N4 R% b, ?& j* C" v ]! q0 p# _ r
{' G3 W+ h4 ~* ^+ Q( D# P% z! A
u8 ack;1 q3 _" D% p' W& {7 w0 W+ y V. }
IIC_Start();* r% x; A5 B0 I
ack = IIC_Send_Byte(addr);( ^( \8 F4 I' G8 t5 r
if (ack == 0) v' ^2 h8 p0 g
{! P% i% n+ y; F& V) [/ W5 F! F8 }
//IIC_Stop();2 r- w0 P- ^ T/ e- c4 X
//return;
. q/ ^' r8 U2 E/ R G" x* C }
. e' n+ R' F+ V, H4 x0 ^ ack = IIC_Send_Byte(iicd);
' a9 b3 A8 U4 A/ r3 t/ j9 Z$ m if (ack == 0)
. E6 M) X8 L( H& L. Y( x {
4 x7 a$ u: I9 g1 Q f //IIC_Stop();
# r8 w- B- ^: ^* }. @: b //return;
. v0 k' Y3 T! f' ] }+ l8 J4 l) n3 Q
IIC_Stop();. e7 P! _* H! `
}3 i+ C9 G2 w4 r9 w+ x
//=========================================================
6 o" a" {3 [9 C5 i8 @# Svoid TM1650_Drive(void)
/ Y" C5 K, z5 x; {5 e0 x{' u' z6 p9 L/ y* e; p* m4 A
u8 i;
2 [$ ?( o. X) }3 u# v5 c for (i = 0; i < 4; i++) //刷显数据
* [- d6 c8 L ]; X$ Y Write_1650(i * 2 + 0x68, DispBuf);
0 G& _; O% y5 f" F% O9 A if (DispBuf[5] == 0); W- N' P$ m! x. p- K3 \
{# K7 K' [' V/ |# x, L! [
Write_1650(0x48, (1 << 4) | 0x01); //关显示6 |4 l6 r7 F. d- n0 s& l
}/ _, p" k& D! h" c
else if (DispBuf[5] == 1)/ V6 d$ ?! ]3 L0 C* B( E
{- m# t; H9 V3 B C/ G; ~
Write_1650(0x48, (4 << 4) | 0x01); //开显示
4 ~8 x$ H. S* ?! C* L4 @ }
( R$ T r0 H6 _3 |$ j. A else if (DispBuf[5] == 2)
* t- v2 M* } M1 n J {+ |( k& R$ d) i* A
Write_1650(0x48, (1 << 4) | 0x01); //开显示- }0 K) _* y3 `7 R- [% c0 K
}2 m Y, \6 Z6 z% S6 C
}- X4 d* ?1 y% `2 u7 E
//=========================================================
# {5 o" q9 t! e( p3 N#endif
0 G W. G7 X! K9 P) b. P6 k//=========================================================
5 f5 D v- U( m; H6 T( F& F8 P, a9 e P* j. }( T* _
) J& |$ P3 `+ C3 t: U+ P9 d' M! j P1 j
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发表于 2021-8-2 16:38
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