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2021-10-11 15:26 |
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//=========================================================
) r7 J3 U8 I) Y$ X! Y5 d# l# x#ifndef _tm1650_& V ^. @6 C! W& y; S
#define _tm1650_6 T# q! s& [& B; x' j5 A
//=========================================================; E6 W8 y I, Q/ z6 V, i( w( U
#include "main.h"- u4 ^+ }; d2 y; u
//=========================================================
- ?: s/ X' h/ g9 _0 mextern u8 DispData[];5 h( I% x( G4 i% C p O) R. C7 v
//=========================================================3 w6 H% N+ X# b7 Y, j4 _2 a
void IIC_Start(void) //开始信号
. r3 y- y# G* B [{$ L+ N. j0 E' U0 h+ M3 H
//P_SDAUP = 1;
9 C8 u$ F+ z( |4 u9 _2 I P_SCLC = 0; t8 }5 o$ ?1 a
P_SDAC = 0;. b- f, L; f: x1 l: _0 u& [. Z
P_SDA = 1;- h$ o1 j: _% K& e
P_SCL = 1;9 Y$ K0 |7 ]% T& k' G3 s1 z
Delay(50);
) `4 [+ _9 ^$ W P_SDA = 0;
" p' a, O3 X+ m4 }& d Delay(5);! r% _& S1 u7 v2 L+ q
P_SCL = 0;
8 J2 ~ Q% B3 T' W3 `0 P8 A5 F) X Delay(5); g4 m/ ~7 s) X1 E9 x2 E# q
}
- E, l* A L/ \3 c+ o2 W" {//=========================================================4 @0 ~) N0 Z+ N. j% A- \1 E
void IIC_Stop(void) //停止信号* d5 u5 V* ]; ^" `( _. R+ `
{8 n2 u8 G* s- m; p/ s$ \
P_SCLC = 0;
- J, e" o2 B3 x- Z6 `( K P_SDAC = 0;
; ]6 f H U% i$ ^7 q P_SDA = 0;- ~( F3 k1 W. p, ?8 q1 W2 H% `
P_SCL = 0;
1 l0 N5 T, g, ^8 `) h& c Delay(5);
$ f9 j' S2 S' N S% r' } P_SCL = 1;- ?. a3 b: A# @, b' d! P& L9 h5 q
Delay(5);
, `/ [% j; Q7 H3 E K P_SDA = 1;
F2 r$ C3 c: s/ ^ Delay(50);
% q% B% b, V. ~4 P+ Z}
8 {- v, N3 Z* U6 x2 T9 Q* K//=========================================================
* }5 T9 A9 \3 D* @, Y# Bu8 IIC_Send_Byte(u8 buf)
+ |+ O p% {& ?! U1 Z' g( s{. C* n6 N* r8 W0 [4 l
u8 i, ack;8 \( N, z/ @* ]' y$ Z/ }1 J5 y
u8 time;
9 S1 y9 W8 e" @ P_SCL = 0;: F* ^; Y x7 h4 r6 _. F5 e5 k/ K4 i
P_SCLC = 0;
, l7 B. ~# g5 R w! x+ F1 D$ { P_SDA = 0;6 D5 X1 z7 [+ i' O: ~( N2 ?
P_SDAC = 0;
: j) W4 }+ q+ z' |, ~8 B/ F for (i = 0; i < 8; i++) //下降沿发送数据
" P4 e, O/ ]9 s2 g! U! d% _1 ~ {
0 P9 k4 }5 j' r% w- O1 n Delay(5);& ]5 p9 u* ~0 ]# o: E
if (buf & 0x80) //从最高位开始发送
# |6 c3 X* i8 e$ }% x0 Z) l8 s P_SDA = 1;$ ]0 A. m i: s
else
- a- Q+ p. x9 X+ h P_SDA = 0;
1 Q$ I& X' t& U# N buf = buf << 1;
$ H9 ^( R/ r2 Z r8 G Delay(5);
% A" |: \# t8 {0 u( e P_SCL = 1;
+ _7 r+ {2 F+ A' V) n) A) U" T H Delay(10);
, u& L1 U) u+ h* I' s" n# e \: j$ R3 } P_SCL = 0;8 q! g, c3 x% I% f
}& b2 }7 O3 O: h0 i4 g
Delay(10);7 q, R+ H- ]# _% l- Q; w+ y5 ~
P_SDA = 0;. q- W/ ?3 Y" H& n; k/ f' A
P_SDAC = 0xFF;2 z; [9 I3 B2 g8 n4 e2 }: V
Delay(10);7 P' @6 U6 d+ D2 e2 {( N
P_SCL = 1;, }. @" [7 O9 y& v) O4 \4 \
Delay(10);
) Z# b. @5 k; f; r time = 0;7 g' E( H# K" v( n: Y
while ((P_SDA) && (time < 50))4 w) h( ]: N$ J- i
time++;
; n% h& @- \9 C5 I# z/ S' O+ u if (time < 50), ]+ h; Z& A5 X9 J& G6 X
ack = 1;
/ Z6 }2 R( j. Q8 `* x) E( h: t) D else
% I+ v; J' M$ _$ c8 s ack = 0; H; {! N7 t& S7 p/ b0 \
P_SCL = 0;
6 Y) v' [. h! b* h* D' h# J5 H Delay(5); w$ d. Z1 j a% B' i* O# [
P_SDA = 0;
! U1 G# r5 w- t+ n" o. Z P_SDAC = 0;0 j( x6 V, v/ \: |; M D L
Delay(5);
7 B9 ?. b! t5 k* f" e return ack;
; }1 w# c1 m/ _ h}
" Z1 \+ Q" S7 J: W4 @//=========================================================3 F4 J' d5 O! ]9 _3 R, E' u( b
#if 00 x" f$ S `1 Y% ?+ c3 v- | I4 p
u8 IIC_Read_Byte(u8 ack), K0 l$ R" o9 k5 C6 e: m) ^8 r- u) ]
{3 y4 }$ h8 T7 R
u8 i;3 C5 i) r& _. V5 R; B
u8 buf = 0;8 K& Q% y& S+ h
P_SCL = 0;( q7 s7 a0 |% h7 a
P_SCLC = 0;) _ N+ E3 s" `% E/ P8 x6 N+ @
P_SDA = 0;
6 j8 E$ j8 _& x( p. ~" ^ P_SDAC = 0xFF;0 Q) O0 @: A7 i' g
for (i = 0; i < 8; i++)+ L8 `4 d) s8 Z
{
. S8 R6 E5 T: N7 b$ O; G Delay(10);
/ q b' M5 P( Y6 X1 x& B P_SCL = 1;. b0 T" W/ b( s8 b% N- [
Delay(5);
9 e, Z5 ?% E. ]0 W, b r9 F buf = buf << 1;" x* j$ f1 N; {7 N
if (P_SDA)
+ {* k" _9 J9 {# y, @ buf |= 0x01;$ b% r" m7 `; n2 Y: w
Delay(5);
: ?! Z4 ~6 Q! x& ? P_SCL = 0;
% u8 `5 ^6 L7 X( Z4 p0 T* F( W0 a }, s- n( Q( @9 x
P_SDAC = 0;. @5 O \9 j9 B& b1 i4 q' I, l6 i
P_SDA = !ack;+ A/ V/ e4 u) U( E1 D4 X
Delay(10); I1 k S5 T; a+ C" f: h
P_SCL = 1;
7 T7 n2 n0 n' k' D( ~1 G; u }% I Delay(10);. V/ U2 Q- l( q3 u
P_SCL = 0;! c" y" r" E3 Y; i7 V
Delay(10);2 B7 x8 y9 o+ e# ^' y- Q& D8 w8 Z" |1 B
return buf;
" \% G( j) _4 x2 u Z}
, `7 L+ B* p1 T" T3 @0 {+ s#endif' k) f" Y8 {. N+ F
//========================================================= D7 \0 Q3 u( N4 E8 c6 L/ B
void Write_1650(unsigned char addr, unsigned char iicd)' |, D9 x9 G. V! J$ h+ |7 w9 k3 O
{
( p0 S: u0 ~% Z& _0 F; _0 {# _ u8 ack;
8 B7 a) Y M( {- ^ IIC_Start();
* c0 ^' E! \/ k! v+ f ack = IIC_Send_Byte(addr);0 M- b" H' Q4 }4 @4 F/ e1 d
if (ack == 0)/ k% H$ {9 Y2 C; \* |, d
{+ J; E0 b3 `- f9 d, s; p
//IIC_Stop();
: ?; Z" J# T9 _/ X( ~2 u. F) u //return;/ y4 j9 |4 h0 E- ^+ A1 I% M% r
}9 u4 `& _9 n/ @+ w) V
ack = IIC_Send_Byte(iicd);$ F9 e5 a( A2 M. M3 Q' `2 Z2 ^3 I5 z
if (ack == 0)
3 X, m0 A. {2 a& ^0 y' v% Q2 E. i: a3 V {
% F. ]# m) {& P/ A //IIC_Stop();
8 c, |/ n5 Y3 l$ t8 Y //return;
* o# E& S, N/ U: s }2 e/ k6 T& L- Y: C8 T
IIC_Stop();
: d7 ^8 i+ G4 x8 q. J* A; k$ V0 E, x} _3 ~0 k6 n K2 j% ?$ U
//=========================================================6 f& }9 `2 U/ @, K$ {1 o2 a
void TM1650_Drive(void)8 x2 F9 K; d* }# `+ Z
{
' t$ K. d- f0 D+ k u8 i;
1 K' }) ` R$ T, b% c for (i = 0; i < 4; i++) //刷显数据
! ^+ s! O' X' ~ Write_1650(i * 2 + 0x68, DispBuf);* N' x5 ]* W! v( {( k/ F, W* x
if (DispBuf[5] == 0)! ] e# A$ g. t8 Z/ u
{
! |% T& h9 \# ]% E" W Write_1650(0x48, (1 << 4) | 0x01); //关显示/ n" q% Y+ i& o" g! f
}% s. N. C7 `) B9 H: f" @$ Q
else if (DispBuf[5] == 1)0 W0 V8 \% {8 d8 I" s
{
3 w6 y7 J# v( Q. R2 F Write_1650(0x48, (4 << 4) | 0x01); //开显示% m* D3 f8 J: q
}
& P- ?9 ]" O# x0 j7 o" }' Y else if (DispBuf[5] == 2)
# Y" L, p! m5 n H9 s1 P- T0 Y {1 ~4 ? G2 C$ m) M/ o" F
Write_1650(0x48, (1 << 4) | 0x01); //开显示
6 P$ @4 E6 f7 k; x0 K8 c1 B X }
# ?1 ~; o! m* R7 k2 l+ [, K}3 a: h/ ~& R7 b5 R8 S3 k. e
//=========================================================9 k. ^4 C3 T- Z' Y7 g" z: a$ ^
#endif7 `% n7 Y6 v0 I9 b3 w) T
//=========================================================
3 T1 X3 m r, ]3 y& J: a
6 j& z5 b0 g, m" z
1 d1 ]3 d, r- Y2 }+ F& j* z0 K4 ^1 Y8 G# Q
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发表于 2021-8-2 16:38
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