一、添加key按键模块的文件
; U) G4 m. ?: J; ^新建一个文件先保存为key.c. X3 f" ]6 R, g
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5 K5 }8 l0 ^- T! g新建一个文件保存为key.h
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将key.c文件加载到工程中去( S) n2 \: R& f" {$ n* \
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: B( Y! H3 W; D1 \, `/ S p二、添加代码2 g/ e, }2 ~# O* d1 T# @, S) D
在key.c文件里输入#include “key.h”,保存后编译,实现.h文件与环境的关联# d& W4 \8 q; R
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k1 z; p- E8 g在key.h中添加要用到的函数的头文件: h$ [% d9 U; ~8 o5 N# Z W
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读取按键要用到的函数9 W1 _1 o e8 P( q. {% {% k" c
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要添加的头文件" a2 @' x" X, _+ C' n
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. I& p3 y5 l: H$ [将此头文件添加到key.h文件中去,保存并编译" o/ l2 Q+ J9 X7 P" v
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按键要用到的引脚的定义写到key.h文件中去,并添加按键函数声明
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- #define KB1 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)
/ J; k/ ?0 U7 t5 X' s7 s - #define KB2 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)2 ~/ s/ v+ r) Z
- #define KB3 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2)7 s- Y: t1 b5 Z# Y( Q6 ~
- #define KB4 HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)
复制代码 G( F& g6 V0 J
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1 a) R+ p3 d9 Q, l, G8 ~3 R$ J6 c1 |在key.c中添加两个按键函数的代码,保存并编译+ }: U8 |% X$ E, A% L' v
- char Key_Scan(void)9 x/ K9 [! h0 d3 ^! m1 U
- {
2 m5 q+ q& ]" t0 H& ]2 ? - static int kb1_count = 0, kb2_count = 0, kb3_count = 0, kb4_count = 0;% ~. `4 Y3 A/ ^; Q; H, X
- char key_value = 0;3 C- }+ {: Z2 M6 }
- //key1: z6 w2 g' x8 L! D- r: `
- if(KB1 == 0)1 y' F6 f7 ]0 M% }2 }
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- HAL_Delay(10); //去抖
; `; @* D$ n3 G3 e# m! O& a - if(KB1 == 0)1 k" b* O' k* I' Z8 P
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- kb1_count++;7 j+ q- U" ]' b7 N0 Y5 Z
- if(kb1_count == 1)
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- key_value = 1;
) C i' g- r0 l - while(KB1 == GPIO_PIN_RESET); //按键松开效果
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- else
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o9 I% w5 x( V' q7 e* ` - kb1_count = 0; 9 G" |# p# x9 i7 o9 V8 o# I" J4 }$ d
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9 b% p( K5 r* f9 ~+ k6 q3 p* N - //key28 R& W1 G& j0 p5 W0 R
- if(KB2 == 0)
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- HAL_Delay(10); //去抖
0 Z; W% T9 `/ v! A" d# K9 w. W - if(KB2 == 0)/ j+ H+ I& G/ S
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# {; t/ I' H/ K0 G/ N - kb2_count++;; s1 O6 h1 G y, Z
- if(kb2_count == 1): s' R* \3 C6 i, @" T
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- key_value = 2;+ m+ H! w" V. P6 [- g
- while(KB2 == GPIO_PIN_RESET); ' T+ p. q+ a( W$ y
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- else
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+ W$ U3 x$ a1 j. | - kb2_count = 0;
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- //key3
% u' z: D% A4 H - if(KB3 == 0)
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- HAL_Delay(10); //È¥¶¶
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& S& g* H; A- {* L# B - kb3_count++;: x$ k9 f+ J# g K
- if(kb3_count == 1)
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- key_value = 3;
( ]3 }4 Q6 ?% A% P* Z5 v* a - while(KB3 == GPIO_PIN_RESET); 9 S( D8 u$ N! j8 D. u; _
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- else K% H9 f* `/ F y0 S
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( R0 q( @* K: t7 d - kb3_count = 0; 7 E& D Z% E8 U# G, d* B1 j _& a1 G) a
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- //key4
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- HAL_Delay(10); //去抖. h. {( r# I, T, [& x
- if(KB4 == 0)
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- kb4_count++;
3 V; G4 L; a# t: E9 [9 e - if(kb4_count == 1)
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. P$ v" O* q2 Z a; N' J - key_value = 4;* d2 ]) ~0 o# x$ x0 J
- while(KB4 == GPIO_PIN_RESET); $ m1 U' f; b' b- t5 E6 u
- }
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- else - y8 P" ^. p, h5 n8 \4 Z0 y+ m
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- kb4_count = 0;
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- return key_value;
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- //³¤°´¶Ì°´6 I+ T0 m) { Q7 G `
- char Key_Scan_CD(void)$ b1 k* a: p* w+ V9 i- K# R
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6 W) ], i, y* g3 {' n7 G - static int kb1_count = 0, kb2_count = 0, kb3_count = 0, kb4_count = 0;7 h7 ?+ ?* l( j' Z& k9 i9 H
- char key_value = 0;# \" r% y. [* L9 E0 n3 s
- //key1
6 f1 ?: R. R( a# f - if(KB1 == 0)
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4 I( [ ^; A3 J0 }: a! P - HAL_Delay(10); //去抖3 Q3 t' Q5 ]; ~: f9 i+ n
- if(KB1 == 0)
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3 Z. D5 i$ \7 |( c( \ - kb1_count++; ) L4 a* `" ]( X9 N% q2 B
- if(kb1_count > 70)
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- key_value = 11;0 m# U4 R% I; M" J$ i1 n
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- else
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9 D x' y W# r. K% K9 c u - if(kb1_count >= 1 && kb1_count <=50)
3 b; \0 ]: L+ B" V, L) C; S - key_value = 1; 3 h: U; G# p& Q# B4 e
- kb1_count = 0; ' `9 h. a/ H z! E) S* d9 c& [
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- //key2
! u2 M/ D7 D7 k+ y3 c2 Q - if(KB2 == 0)
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- HAL_Delay(6); //去抖
% p5 ^, f) h- ]6 o - if(KB2 == 0)
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- kb2_count++;8 W! _, Y5 b d4 B. g
- if(kb2_count == 1)4 T- Q: n- `9 Z4 O$ u
- {
: X x6 A- y& q9 W$ W" s7 l - key_value = 2;
; Q! a, I; E9 A2 o; x - while(KB2 == GPIO_PIN_RESET); 4 J+ n! m" F9 r2 I+ _/ g: ]; n* R
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- kb2_count = 0;
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- //key3
9 U( T/ _" o0 X3 U8 ~& w5 r - if(KB3 == 0)
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" ]7 P, V/ f4 [5 N. O' r# w - HAL_Delay(6); //去抖
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$ D) l) H- M& _/ `& M - kb3_count++;
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- key_value = 3;
E4 c" I. S6 X2 L - while(KB3 == GPIO_PIN_RESET);
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8 m# {" Q3 n" M5 t - else
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2 i( _" i% Y6 ]* n8 w: r6 P - kb3_count = 0; 4 x& c$ F% Q/ A: ~
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- @" U2 F3 _ ?# l% Y - //key41 c" w+ Y) p* [9 b- N/ a
- if(KB4 == 0)
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- HAL_Delay(6); //去抖: a/ y2 I; X1 K; E: \0 ^0 }1 |
- if(KB4 == 0). X8 l. U1 I& s+ l8 [' C. a
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- kb4_count++;% v$ m5 g: D: {4 G! K" g
- if(kb4_count == 1)
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- key_value = 4;; Q c e- Y C. K
- while(KB4 == GPIO_PIN_RESET);
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- else + M) x) M* N6 {4 w6 l+ n1 k& E
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- kb4_count = 0;
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* a, d3 K; i0 V$ `1 Q' Q - return key_value;3 |8 I* m# `4 |. e" @ R% @
- }
复制代码
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三、以上就完成Key按键模块的添加1 c$ |+ v( T+ @: S! M6 b
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