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//=========================================================
2 k/ G9 u' R9 V, I- ]# r#ifndef _tm1650_
& v9 x9 u+ A& r#define _tm1650_% G8 o* U! K/ c3 r
//=========================================================, O7 n1 w- l& g0 s. A
#include "main.h"
$ w0 v; G* b* H; `8 A7 N! P//=========================================================% \" z4 ?3 x. r. u: M9 R" j
extern u8 DispData[];3 \4 e1 ?4 ]4 |) N
//=========================================================, Y9 i2 g) N2 s: r" F
void IIC_Start(void) //开始信号
: ?5 q- S* _ r9 V{
( C% o7 [9 i1 s5 ]% z //P_SDAUP = 1;
& [3 F- d e( f& n P_SCLC = 0;( p( A) I9 x! W4 ~
P_SDAC = 0;2 v0 e; E5 W' A+ K! w; Q& L1 j+ x
P_SDA = 1;
2 `& r2 U$ W! v- i8 C0 E! P P_SCL = 1;
h2 Q' z# u; [& S5 ~4 S8 \( S Delay(50);
- K- x* d6 D8 d/ G3 p! n: Z c! n P_SDA = 0;( ^5 v+ r9 t) e( ^. }4 ]9 u# W" j+ i
Delay(5);2 N+ D- m3 T1 V$ ]2 b" |
P_SCL = 0;
9 s4 O9 _: h& J- N" x Delay(5);, Y* z G( Z1 V
}
- y* B( f5 e& j) Z( z B//=========================================================+ F; Q A/ H6 O U; s, U
void IIC_Stop(void) //停止信号, }) I3 ]' p+ K3 ?1 m4 L
{: ]5 n& X0 @+ J& q1 l6 l ~5 r1 x
P_SCLC = 0;
# ^! x- d V$ h P_SDAC = 0;
/ C0 r! Z" @" m& l6 E7 K. [% d. e; ? P_SDA = 0;
) r) J9 b5 b7 a* J# W3 l8 w P_SCL = 0;
6 A) e% G$ A* N7 q$ n Delay(5);
3 \9 F8 Z) e; N# i P_SCL = 1;
' b' E2 p0 n! p% W* e Delay(5);
8 t. B4 m8 N+ j: K" v6 I P_SDA = 1;
: u! b4 i: j, v Delay(50);
5 h! j# g0 A4 k; j; @4 r# D}
: Z/ M( f: G! U//=========================================================
$ }8 g- n$ S4 N J' h9 Ou8 IIC_Send_Byte(u8 buf)
( q1 H4 ^- U$ l& y+ k{6 `" N4 K _6 ]# n
u8 i, ack;- R) l* A3 y6 r" {- v2 n
u8 time;( H; k* m0 e% n" m# b' U+ G, w# A
P_SCL = 0;
7 c% Z3 R. C- r P_SCLC = 0;
, m+ e0 u( y9 n1 [ P_SDA = 0;
) n7 h8 T. T8 l1 R- F5 p P_SDAC = 0;8 @. R' W7 q( U9 `9 W8 K7 ]
for (i = 0; i < 8; i++) //下降沿发送数据
( N4 ?. x+ h: L7 U( ]% o {
- O4 D5 [. O" ?- Q" e* s% B' J Delay(5);# Y# o# B0 e7 w9 |$ d X2 a3 S! j
if (buf & 0x80) //从最高位开始发送
* u1 x. g: t# B P_SDA = 1;
: W5 y$ b# s. t7 H% H+ [ else% c3 G1 M: k( y
P_SDA = 0;
( b) Y2 c/ }/ d$ h. I# a, r buf = buf << 1;) K6 q, b0 C) u) w; O
Delay(5);
. k3 y) e+ C1 q3 Q: \. o P_SCL = 1;( r2 z6 \& F7 |& R: [/ U4 P" D
Delay(10);, H' i! L, n5 I3 H+ r5 c1 l* s) g
P_SCL = 0;
h. t5 Z/ O4 S/ N9 L8 M* {6 n }2 @: u) z) x Z, O
Delay(10);9 H0 {+ ~* D6 A& x
P_SDA = 0;
; P9 J* I9 ~2 E. Z3 f7 X P_SDAC = 0xFF;
, y$ V4 t+ G! V! F$ E+ ^$ d9 U Delay(10);
7 W3 k4 Q' o) P: J1 x+ Q+ O P_SCL = 1;5 F" q2 ]5 G- d4 ~7 ?
Delay(10);
A7 u k8 p4 k D! ^, {6 w( r time = 0;
& i# |) V# e" v9 D4 l while ((P_SDA) && (time < 50))! i) ?7 N( S9 ^9 X- Y% e/ s( V
time++;
1 N1 ^+ r1 e) B, R; L: Z if (time < 50)
% v2 h( u' V& Z. g2 r5 z ]% B6 q ack = 1;
+ ?" u5 x+ s% s% U/ T& T9 g else/ ~$ ?0 y$ {4 m7 ?
ack = 0;8 }& o& Z+ t) ?8 C9 H- `8 f
P_SCL = 0;8 T" o! V+ t- m2 H* ~
Delay(5);9 c v l! U/ K' j+ Q+ M- M8 \
P_SDA = 0;
& z x$ ]7 r0 H w0 r P_SDAC = 0;4 C/ E- `, T, W. g
Delay(5);
9 m1 Y3 R4 O& ~; A return ack;! d* C! D% l5 T8 a# e0 r
}
2 \8 n' X: Y0 s4 _//=========================================================
0 a+ M# o/ L2 q" p8 s#if 0
% h/ z9 f$ k1 U3 o: Nu8 IIC_Read_Byte(u8 ack) h. w/ h3 P6 g5 F. ?: `. @# Y, v
{* @/ ~ a3 Q3 p, P
u8 i;8 E, l( L, p# d0 K% P* W5 U
u8 buf = 0;: u9 a, K2 u1 u. M& l$ x9 [
P_SCL = 0;
, r9 M% t* S; o+ _ P_SCLC = 0;7 b5 B) ?0 _0 q& E7 d4 y, q$ U
P_SDA = 0;* p/ ]1 i* v* [3 q; [ F5 j( r6 r" D
P_SDAC = 0xFF;
( Y9 C+ e. S5 l2 b for (i = 0; i < 8; i++)9 ^9 B* l! j& K5 ]. o7 t: x) l- J' \" K
{2 L3 A) S/ r' O
Delay(10);
! q# |3 H7 D; e6 U" c/ y2 u P_SCL = 1;
1 {5 z6 S3 h; ~4 Y) X' d' z Delay(5);
; V+ w! N; k j: o buf = buf << 1;7 Z) Z3 ~) T" F- Q
if (P_SDA)) t# O7 g8 k' ~+ C
buf |= 0x01;, P! i9 K1 D0 U& b9 l( U
Delay(5);* g: V" F3 G5 c! K
P_SCL = 0;6 ]7 u+ s" J6 D( H3 A/ d
}
; e( v0 ?0 Y* t3 T) Y P_SDAC = 0;. @8 w- g; D5 C9 u% a+ {' _
P_SDA = !ack;
0 w7 d# X) T7 J A" l' b5 S# _ Delay(10);
) Z- ^8 B( U. }% K0 X P_SCL = 1;
0 M" A2 ^+ l: R0 {# s; [1 Z0 t5 _3 H Delay(10);
; x1 b1 k- ]& E# F* F9 q P_SCL = 0;* K& b7 w# ^2 [0 o1 W
Delay(10);: f: z5 l E! G) e. Y
return buf;" q0 T' D) U7 T- Q) \
}
& Q; M7 h* U# O4 j" M9 x. G8 f0 l* Z2 r4 D#endif. V A0 _1 d7 o2 c0 T& {+ P
//=========================================================
% w- W! O/ P$ e* P: g+ s0 B" Svoid Write_1650(unsigned char addr, unsigned char iicd)
) X- J1 W# y7 i{# Y3 ~' F, ^( f+ a
u8 ack;9 q. v' S1 z, n4 I0 d8 J
IIC_Start(); d2 k; D% u3 R- p9 z
ack = IIC_Send_Byte(addr);
/ p% [( X0 c6 a9 @ if (ack == 0)" o$ _# o+ T$ U( c2 z( N
{9 t2 P+ Q; D! X8 N2 A2 m+ N/ ^
//IIC_Stop();7 L) T$ t$ Y9 B6 W3 o9 v; y/ Q! e
//return;
2 f. a2 P( \" M' ~# m }- `! g5 T( o4 H" h$ x
ack = IIC_Send_Byte(iicd);4 x: B" P9 N' j; p0 n
if (ack == 0)
- l; w9 h3 _) p* ^+ m* L- t2 O3 F {
8 h2 U, }& J$ L; R: i //IIC_Stop();, ^' _( h3 h% w1 z/ F4 J
//return;2 B$ ^! P& T2 }8 P X0 q
}
# W8 n5 t7 a+ B IIC_Stop();
$ N+ U& u4 }- @9 e}% ]& J2 G; O7 \4 [
//=========================================================% `, a0 P" O9 m% S% Y8 ~1 Y
void TM1650_Drive(void)
+ ?! e& V4 g! b. j \* ~5 K{
' s7 H. p# K8 u2 v8 ]+ V' H u8 i;% O5 }' a0 C7 A: F
for (i = 0; i < 4; i++) //刷显数据
' F* H/ k2 F' c0 V Write_1650(i * 2 + 0x68, DispBuf);! Z# ^: X2 _" f3 M$ X/ b8 L
if (DispBuf[5] == 0)
2 o" m$ j3 d( i3 O$ B {
# f# b- ~6 u. ^* o* H Write_1650(0x48, (1 << 4) | 0x01); //关显示
' t8 u& Y1 s6 J6 q6 c. r: y }
: e' `1 U2 W/ E% h else if (DispBuf[5] == 1). @) R/ D: Q) j1 ~, [% w( x
{
7 \! R/ j* S z Write_1650(0x48, (4 << 4) | 0x01); //开显示
% g5 b- a. O L; r r1 C( C3 [ }
7 D8 X6 }7 T4 h* S0 F else if (DispBuf[5] == 2)% \: `8 F: L3 Q8 T3 m* l. y; {
{
. ~6 o, d- v3 Y Write_1650(0x48, (1 << 4) | 0x01); //开显示( Y+ P9 |# I3 V% P& h4 w! h
}- x' U! W; s6 g5 y
}
, v* Y7 E2 D1 d+ }: h; N! I//=========================================================
. [/ C& q/ Y# E8 ]#endif! q) ]; }9 Q% S
//=========================================================9 h4 c% |) I, Q7 |: F F
1 L3 l% H+ x! J' s$ E* b
+ U3 S E, e w0 b! b" x
* ?' ^ u& B4 D7 z1 {! F6 g
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发表于 2021-8-2 16:38
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