一、添加key按键模块的文件
0 a: X* T( @* O* [; Q, F& l# [, J新建一个文件先保存为key.c" S# N7 h' V |/ H, Z+ [& w
1 ]) A! J, }8 k! R4 W2 {2 N
: Z* w9 Z( E. S& F8 f4 ~
9 \4 q5 N4 ]4 P6 s
新建一个文件保存为key.h
; v; I. C9 V# [* h, r
9 H& g7 k+ `6 O" x0 I
4 T- \2 B' p% R' n
# T7 b, O9 M( S. e 将key.c文件加载到工程中去
6 r3 u! F0 c& _; }" I
4 E% f. F1 L- G A3 k
; C5 M7 u' \5 y& G
' x3 Y7 ?8 z2 h l7 e& Q$ {1 T二、添加代码+ o, j( J/ r9 g" x8 j0 z t( K
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$ A# E+ b) Z- a9 a( M3 H7 b
- c1 G1 c- [* P" m9 X
! Y; k7 |1 N3 f( Y# U
; }: j! D, E# f1 A0 R! i M# h在key.h中添加要用到的函数的头文件
; E( Y- K2 F0 Q8 D5 P6 Z0 T4 }1 Q) }2 M0 H5 c
读取按键要用到的函数
# o( x2 s9 K2 |5 {0 a& v8 V9 L9 b1 ~- z! K6 v$ J. |/ v
3 ]( R" t: }$ W/ i2 ]
' k2 ~+ r% ~5 |; K" G1 t
要添加的头文件$ b0 V4 {+ J P9 \
J6 L3 J. A8 `- z- U
6 t) l; i1 S1 E+ ^
; c7 J7 w- I/ }将此头文件添加到key.h文件中去,保存并编译3 t2 T L3 t% x& L% A# j+ Y% l
# M" A2 W+ Y1 y# U! m+ y! F
* A" O& D% u! m4 N: u
* u. p9 a0 Q, g7 _) `9 `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
' a! e- r! p. L; j7 I" H. p: E: n
( c" x b1 b7 ?: p2 t g
2 E" c' G+ O7 F; w- #define KB1 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)3 m+ b% _: F- ^, M- G; S p( A
- #define KB2 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)
7 h* i2 M3 E' e9 G1 n - #define KB3 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2). o0 D5 `; \+ b+ W# W5 O
- #define KB4 HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)
复制代码
; `& T8 U3 _* d1 X
8 J q; z9 D1 D& L# [ Q
! y3 K0 ^" j% r9 Q+ ~. y# J. m
在key.c中添加两个按键函数的代码,保存并编译
! n' r9 N( O: v9 L- char Key_Scan(void)' Y0 `) ^: [+ y+ i. S& J& s7 a+ J# N8 P
- {/ x9 b( G8 f9 E8 a6 J
- static int kb1_count = 0, kb2_count = 0, kb3_count = 0, kb4_count = 0;
* s i' R |6 k - char key_value = 0;
* G( r( T- D6 Q/ L* I: v9 m7 P1 K" t - //key1
/ Z/ \: S$ f8 R8 V3 W: k* B - if(KB1 == 0)7 c& F9 @8 O# y# }( h1 \
- {8 O L6 O: p. u n. M
- HAL_Delay(10); //去抖
# j; z' l- i4 I9 p8 i+ C v% u0 I - if(KB1 == 0)- ], ]: Q$ x* ]6 r& }
- {6 M. a- O2 c- k; r# X( f/ M
- kb1_count++;" K, ~" n7 g( E! m5 y
- if(kb1_count == 1)7 T- W Q0 I! x6 e* K: c; @
- {: ]- q* J- ^* T; y' W" L
- key_value = 1;9 L+ z. p4 h8 n7 |! b6 @
- while(KB1 == GPIO_PIN_RESET); //按键松开效果
& _, k3 v) |- Q5 O! f8 r& Z- T - }
! t0 {8 n# O4 i/ p! {$ `7 f0 X; }/ ` - }
, J* l( ] P8 s7 S0 m: y - }
! q2 A- D8 g, @( o; M$ L( n9 u - else # g- k8 G k3 H) m1 v$ L- f
- {! H$ P7 v+ m& k
- kb1_count = 0; 2 g+ B/ B2 Q+ n' {1 k9 z, p1 P1 k: y
- }
( [: M; ~6 s0 _( g. X+ `1 T - 5 S' _. k! Q0 ]6 F% ?) [& C
- //key2, ~- F- N* I( P8 l. M) S u
- if(KB2 == 0)
+ a, n7 O" y5 i; o - {! X0 }# z% b. d5 E0 F5 n, l+ p+ l
- HAL_Delay(10); //去抖0 u$ r# ^- H- E
- if(KB2 == 0)
3 d7 f1 L( o$ X4 C3 s; o/ c - {8 Q+ m4 P5 o! N! d2 H6 c
- kb2_count++;% E; b, q" K" n) m! {3 ]0 x
- if(kb2_count == 1)" ]* V- G& P$ S ^! Q
- {
% s2 d' ^/ G4 v& [ - key_value = 2;
) \! s3 r2 P' F+ w, ] - while(KB2 == GPIO_PIN_RESET); 6 L0 K0 P( k! U4 D+ c
- }8 X6 K! b5 F- G
- }
2 Z N C1 r6 }) s& \ - }
~& y- W( u- `+ [* i3 H - else
/ i: B$ e* n' ? - {7 a. N+ j4 s4 I5 J) H
- kb2_count = 0;
$ F' A3 t4 K6 ]7 {1 U - }0 n0 u) T" A+ u7 d' k4 g7 w; [
- 7 c T9 W- z" \9 @, z/ O
- //key3* \: \/ g( p3 I1 o
- if(KB3 == 0)
% \ Q2 v1 S) L, \5 S0 Z - {
0 g8 ?. Y# {2 F - HAL_Delay(10); //È¥¶¶
) F, a8 [& @! X5 M, E - if(KB3 == 0)
) r6 f9 `' C. ^& I, s `* m4 ? - {5 d6 v' O4 M& ]9 e0 B% d9 W% g
- kb3_count++;7 j9 `1 P2 M" m* q0 L* H1 U
- if(kb3_count == 1)
E; m4 v$ c8 v5 v/ G4 Z: D9 B - {
7 g. z6 g+ W: {$ U z8 x. L' j - key_value = 3;
y" z' v) a2 X4 h S8 y0 ] m - while(KB3 == GPIO_PIN_RESET);
8 P& p& w3 Y8 T1 H; N% O - }; O8 _3 b) `9 l( V h% B' J
- }' n# R6 i/ k: k% {- Q2 x- B
- }
! [2 Z/ |7 L$ Q: S. s - else " M: [! l; U) A' l8 t9 }8 L7 X
- {
9 a" d) k$ b/ h - kb3_count = 0;
2 `( G7 v7 k" y - }
, R( `: q+ u9 o$ P9 n9 | - * L0 |7 A3 U/ j
- //key4
# [+ x3 B( k- p' Y - if(KB4 == 0)
. ]# d0 Q& M6 G; s; _* W9 ~, t - {) M" l4 {, ?2 D! ^. J F# z
- HAL_Delay(10); //去抖' X% F K# m' E, I6 g, s* G2 r& q
- if(KB4 == 0)
4 e& W9 ^8 H, U+ O - {5 I0 a0 g4 ]6 y& x. Q$ u, h: i& V& E6 {
- kb4_count++;: O' S! G8 K8 Y& T
- if(kb4_count == 1)
, \& S: A9 H% p - {
8 w( E6 x' ^0 m$ K! ~/ x - key_value = 4;
y5 m5 f1 ^1 z3 a: J" a - while(KB4 == GPIO_PIN_RESET);
j- z, i( U8 H- b+ J - } 1 u* a4 t5 {% z4 K) S0 q
- }4 {0 j$ [) h( Y O6 R
- }
" W* m1 b0 d$ z+ O5 W: d - else
* ~) m' t! x% N# Y/ ^/ Y" l, w - {
7 Q8 T, C9 U( ?" `8 c; L - kb4_count = 0; / m6 u& u- d2 s4 [" S
- }
' E1 U& b$ |0 O' s - + b) R8 j1 y( q6 f; b, [/ I# ^& k
- return key_value;9 @8 f7 O+ V8 [
- }
% l' B" }, b, {# X# ~! R -
6 W# B+ r; d* \. |1 X - //³¤°´¶Ì°´
- R8 Q. z" Z; z9 `2 i - char Key_Scan_CD(void), j( T4 J* B( Y: U
- {; n" z/ \7 i. | k0 P
- static int kb1_count = 0, kb2_count = 0, kb3_count = 0, kb4_count = 0;- g! F# [3 s7 B
- char key_value = 0;
: c: k1 U! W9 ~( N - //key1
# W2 M+ @; ^, B- \8 @( j, m3 v - if(KB1 == 0)+ r1 U9 o: b6 P2 \) @9 Z9 b8 e' c
- {8 K( h/ w ?- p! [' s
- HAL_Delay(10); //去抖& g# z' J% |' u `1 u+ O0 q
- if(KB1 == 0)
8 O- x+ P4 i* P3 G - {5 N; T* y6 q7 R
- kb1_count++; 0 ~0 `3 W1 P- b
- if(kb1_count > 70)
. A3 H9 i: }0 e' u' _! m9 E - {
/ n4 R0 ~; O4 S1 I H1 C - key_value = 11;' Y4 Z# A5 `. k: t- k0 O
- }
r3 a0 M4 r& b5 i* ` - }
7 I+ R/ Y% X5 _% Z9 C1 r - }
# F4 H$ \2 p+ u. q' |1 ` - else
7 E0 I$ N, \3 W' v2 z9 q - {
/ O. ^5 d7 g0 `/ @0 H3 e& |0 ? - if(kb1_count >= 1 && kb1_count <=50): [2 V7 {" i2 f+ E
- key_value = 1;
" B" p! U; d- V - kb1_count = 0; 3 W$ ~$ E, T0 O8 g
- }0 t1 `6 c- q' ?" } j) H; f& g
-
0 L8 Z5 M1 T# R) _9 J - //key2
4 ?- t5 r: z# q4 i# C5 v1 d. N - if(KB2 == 0)3 n/ A, q5 V; X* H
- {
6 \4 c* B b# n: Z6 M - HAL_Delay(6); //去抖
& \! V& |& s; [) f - if(KB2 == 0)$ w2 [ n0 q i- {7 C
- {+ {2 \) d6 f% h/ D V8 M9 l
- kb2_count++;
5 _' B) H0 N/ N) l. s - if(kb2_count == 1)- k, ^! {8 o$ ~; S1 @0 r/ j2 O9 U9 H
- {7 I! M+ I; e' n$ V( W' e
- key_value = 2;& ~. w1 [% V$ K
- while(KB2 == GPIO_PIN_RESET); 8 Z! s3 M d+ b: ~
- }. q8 t" p3 D0 o& m
- }
8 k ?5 f# r) {' R" a4 E - }+ m2 r) t" {, p) E% J
- else
, O8 _2 _3 N$ j- ?8 E7 @ - {! D5 V8 V% K) R* K" ^* Y6 Q, S! [
- kb2_count = 0; ) A4 |. v9 A$ |: G: G
- }
( Z& c# {9 s# q+ P# _ - 6 z& _* J% P! D- _
- //key3( X- ^0 ^6 u7 F
- if(KB3 == 0)
4 G7 T$ C: ]; A w5 k4 ? - {
( E" s) Y& o$ J5 n- t - HAL_Delay(6); //去抖
) u6 T3 j3 P, G# Q, ]# h1 j - if(KB3 == 0); ?( L; R# s; Y* d- C; f7 X
- {. ]0 s, j4 w8 l! x
- kb3_count++;
( X7 \/ j7 f! H( a7 h2 k! F) G - if(kb3_count == 1)
6 S6 {& j& f( }2 n - {4 S D2 k$ ]) c: k
- key_value = 3;
' C) x% X7 b+ ]- \; _3 D - while(KB3 == GPIO_PIN_RESET); # d9 r3 v, u) i6 b2 [8 }/ H P/ q
- }
8 Q4 q9 Y: ?6 |/ `+ f - }
/ d' ?8 A7 ~8 v7 h7 |" P - }/ {7 \3 X5 Z t" o' k
- else
. W# {6 C3 c/ U3 Y - {
. e* O/ N+ f t - kb3_count = 0; # u' M9 d% N4 [+ D
- }
: W& z4 K) Y5 @/ T$ U - 5 z( z. p3 p9 F$ s0 t# @4 m
- //key46 I$ i3 E2 b) B& z8 i% R9 i
- if(KB4 == 0)1 r3 u- x, L& |9 [
- {' B6 t+ u3 u/ \4 ^# y5 c( t
- HAL_Delay(6); //去抖4 N& e% U8 b. o. d `1 d: h2 O
- if(KB4 == 0)8 g% P3 i# v+ Y$ |7 f* T4 P3 G
- {
0 ^8 |, X- e7 s9 K - kb4_count++;8 P' M8 j4 [1 ]& D0 X9 _% z
- if(kb4_count == 1)( h9 I6 T, h1 x! G$ Z
- {" U) q3 |* }0 a; Z1 Y3 @
- key_value = 4;
6 F1 k2 q6 q( k$ H8 ~- m9 P9 [( M - while(KB4 == GPIO_PIN_RESET);
( a4 j0 i% v3 l, P( S - } ) K1 s% e: Q. D6 H6 `7 n' t/ I
- }
# x0 w! b ]" G9 z - }
4 {7 P+ H" W9 }- L/ p - else
' G! F2 g+ }9 A5 S3 \9 J+ _+ r U - {
$ C+ V# |2 R3 }2 M - kb4_count = 0;
% I, N( F- ^1 f4 z" l% h - } 6 ]9 [: S# y! u3 |: N! g
-
1 |* t0 S+ n! `! d( l- W0 a - return key_value;
: C0 h; v6 X1 H% z$ \ - }
复制代码
9 O9 u/ X1 N* B. \( k, S
7 S; Q7 i3 w) M* @; \/ W7 g. Q6 k, [" _5 v: A
三、以上就完成Key按键模块的添加& A- Y* Y2 l2 d/ q3 A! n( m. F. j) M
————————————————( Q4 S/ R* k' e: E' Q) F
版权声明:想要优秀点儿4 j3 e5 S& Y! z& i
. U8 G6 Q2 o+ q$ @ |