STM32F4(BUZZ) GitHub仓库:http://github.com/XinLiGitHub/STM32F4xx_BUZZ_Example4 A. L9 C' R" C& A' N" f0 F! y
PS:博文不再更新,后续更新会在GitHub仓库进行。
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在实际的项目开发过程中,常常会遇到硬件电路的修改,然后修改的部分就需要修改驱动程序。想这样需求该来该去是程序员们最烦闷的事情(重复劳动痛不欲生啊~)。为了避免或减少重复劳动,就需要在程序的架构上下功夫。接下来以最常见的无源蜂鸣器驱动程序为例,进行程序结构设计。
2 j, n! t6 t4 E T& u+ w8 O
1 \# v5 w: \" ^( p. x0 x1 H/ d: d( p+ I5 t6 a
1,开发环境) g$ e5 o) j! R& g r
A& v. H. _, @* H5 m7 d
1,固件库:STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
* E+ k& M# r+ L) A$ `7 r n K 2,编译器:ARMCC V5.06% U, e4 f) ]( Q+ z
3,IDE:Keil uVision5
6 D) x, p; ^% w/ I! S 4,操作系统:Windows 10 专业版, w1 S# s/ N3 H2 M
: n7 A; X1 B' q0 O2,程序源码
' p. E0 I3 F. D6 w& J# ?3 G6 O' h BUZZ.h文件
% C$ v" I J7 Q" a7 S" x- /**
7 u2 @* k% j/ ?; e - ******************************************************************************
! o! I% }- Y/ Z( j2 M - * @file BUZZ.h5 P9 V5 k6 A, P' w- i
- * @author XinLi6 @# `3 D$ E( R; c
- * @version v1.0
8 @$ e: C! ?( i* p& u0 G$ U+ d8 M% z - * @date 24-October-2017
# t3 G! v. j9 x" T1 s$ k - * @brief Header file for BUZZ.c module.0 @: ^8 j7 M* E. z
- ******************************************************************************+ F' V/ x0 h' i* }0 Y
- * @attention
5 N- u+ J! ^1 l% X' } - *
; j) t( [* D; h) ?7 f9 _: \ - * <h2><center>Copyright © 2017 XinLi</center></h2>
0 M8 S! W; J* R - *1 c( B. j8 T- N; w* P. \1 \" \* F
- * This program is free software: you can redistribute it and/or modify
8 \. S6 I* }" e, s0 ` - * it under the terms of the GNU General Public License as published by/ d) L# K; q2 [1 g; V3 @
- * the Free Software Foundation, either version 3 of the License, or( A' y( [& W) L8 h
- * (at your option) any later version.
- k8 g: L& L q - *9 D) Q5 D1 l" I+ ?0 O) E% o
- * This program is distributed in the hope that it will be useful,
3 u- u7 m6 B) b* f& ~/ s/ [ - * but WITHOUT ANY WARRANTY; without even the implied warranty of9 v$ N1 |/ k; |: C8 M4 C' O
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the4 `0 _" w) r x
- * GNU General Public License for more details.
+ K+ F2 f0 |1 @8 r h$ E - *1 Z) Q, S o7 `& q* x3 V
- * You should have received a copy of the GNU General Public License/ p& Z5 Z7 q& C# v" t
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
e5 a* R: w/ F - *
. J2 G$ @, o6 @( q d, J - ******************************************************************************
" h; [4 C" |+ ]7 N - */9 R% n$ ^& _7 q8 h( |- Q% `
, d0 P7 h% G/ G! f; e$ {- #ifndef __BUZZ_H$ m; a, _* O& J+ Q+ j Z! d
- #define __BUZZ_H
- T1 H) h2 t8 @! t
1 V8 [7 a- G l5 p+ m- #ifdef __cplusplus
( Q0 u# \- h+ U* @8 H+ ^ - extern "C" {
, L, K6 f% T! o0 A - #endif
9 c5 j; U6 K6 }8 U: f
5 \ |9 |: v/ W- /* Header includes -----------------------------------------------------------*/
! @' ]; g8 e% v0 A: G: {% h' D - #include "stm32f4xx.h"1 m+ V" k1 ^ C3 `. A( }# K! B+ u
- ! ]7 j5 p3 [( }. ~/ a N$ D
- /* Macro definitions ---------------------------------------------------------*/
' T, _: I! @# ?/ _6 k - #define BUZZ_RCC_AHB1Periph_GPIO RCC_AHB1Periph_GPIOB/ ^, s+ g: ?0 V
- #define BUZZ_GPIO GPIOB1 J! ]' L, \# a! c# N" q* i$ V
- #define BUZZ_GPIO_Pin GPIO_Pin_8
6 d' I$ x. q) A. \1 b6 D - 4 e& Q0 u1 h5 g1 |; h* r; S% `" X
- #define BUZZ_GPIO_PinSource GPIO_PinSource8
. I$ z/ r8 V! q" ^ - #define BUZZ_GPIO_AF_TIM GPIO_AF_TIM4* f: t7 T1 Y. P3 V( n2 ]
4 j x: P% }# p- #define BUZZ_RCC_APB1Periph_TIM RCC_APB1Periph_TIM42 r* H3 Q; j1 j$ u
- #define BUZZ_TIM TIM4
! q- P W0 I" F9 y5 e - : o& k# l& H1 P
- #define BUZZ_TIM_Prescaler (83) /*!< Clock divided to 1MHz. */, |4 ]' v9 L( m6 { g9 j
- #define BUZZ_TIM_Period (249) /*!< 250us timer interrupt. */6 R% j# N6 h; z- f+ W
- I- a5 U# \+ x& f8 O
- #define BUZZ_TIM_OCPolarity TIM_OCPolarity_High
) @2 o( H+ F* E5 c# f0 M - y" J$ O4 W# o2 t3 V8 d7 a- f
- #define BUZZ_TIM_OCInit TIM_OC3Init8 [9 w8 W$ c2 ^6 ^2 p. `
- #define BUZZ_TIM_OCPreloadConfig TIM_OC3PreloadConfig6 J% C" r' |. H- `* K
* t; L: ]6 _* S- #define BUZZ_TIM_SetCompare TIM_SetCompare3
; e) R7 S U# |
, P" e2 r7 d# k n- #define BUZZ_TIM_IRQn TIM4_IRQn
+ G/ D6 _, T* H' r9 `1 ^ - #define BUZZ_TIM_IRQHandler TIM4_IRQHandler8 o8 K/ G0 {8 J
- #define BUZZ_TIM_IRQ_PreemptionPriority (0) @ @' N( [1 U
- #define BUZZ_TIM_IRQ_SubPriority (0)
5 X) k; n# ?& f$ g3 ? - + k- F4 `0 z% e+ ^; n. ^
- /* Type definitions ----------------------------------------------------------*/$ u' P0 _8 q& \+ X5 I) i4 W* y
- typedef enum% }9 f% Z2 p Q( M8 d# A5 m F
- {8 f+ ?, m4 ?; Q$ z% R
- BUZZ_Off = 0,
2 F0 M: q. u% T6 s& Y: L4 q2 o - BUZZ_Ring = 1,
1 {) y- q2 D$ ?' q# Z f1 j - BUZZ_Drip = 2,
4 w. I( w4 [, y" g" m9 J - BUZZ_Warning = 3,8 M" D; m1 @+ `- I) k+ g. G* X& Q
- BUZZ_Danger = 4
- K! }, j. X" S# V% r* M2 Y - }BUZZ_Status;
) w* R+ B! n+ P5 U- X - ) ] ` v3 B' [! D
- /* Variable declarations -----------------------------------------------------*/0 q7 ^4 K1 N1 n
- /* Variable definitions ------------------------------------------------------*/: r; s0 ?- b8 Q. C# Q( T$ |! v
- /* Function declarations -----------------------------------------------------*/, T1 `) J: c E2 V
- void BUZZ_SetStatus(BUZZ_Status status);
' u+ _6 f4 C& V8 v L# i - BUZZ_Status BUZZ_GetStatus(void);
* B! r# |$ A% i+ B1 a
( J9 D. Z9 M% F }- /* Function definitions ------------------------------------------------------*/) q2 E% }! Y* M0 ^2 K( l
. D2 l) q+ \5 i2 r+ j7 \- #ifdef __cplusplus9 c0 I) u% z& u
- }
2 \# L. N( P- w: W; O - #endif$ g( K0 c& t5 R9 R
- : J- o* k$ V" p1 A1 R
- #endif /* __BUZZ_H */
( @, V+ K8 t; T; q
复制代码 # R% ]# v8 V* I2 E
BUZZ.c文件
9 {: x% l; b' m. A- /**
" \8 X& g1 R2 T3 f! Y3 q - ******************************************************************************
+ n3 Z7 i" Y) w; F - * @file BUZZ.c
% q6 w; e5 [9 X' X - * @author XinLi4 q. `1 ?7 P" u" ^; S: }3 `; U2 c X
- * @version v1.0
+ l4 E# {' f' b1 G - * @date 24-October-20171 h, N/ v$ X- q" p1 T
- * @brief BUZZ module driver.. ^3 d2 K/ S: r8 o! s& L$ o/ u8 o. o
- ******************************************************************************
6 a7 b" j6 s% D5 B - * @attention9 t+ g6 C1 e* E8 `6 T5 T: X& [
- *
1 V0 S# m @; y6 S( F, J - * <h2><center>Copyright © 2017 XinLi</center></h2>
* \- [# x" [0 e( S9 O - *
7 m3 B! A+ @. s; `8 p - * This program is free software: you can redistribute it and/or modify7 f% b( B/ H& |6 b p5 z( s3 B* {) |7 h
- * it under the terms of the GNU General Public License as published by* D* z: Q! b/ Q; @6 B6 w9 f
- * the Free Software Foundation, either version 3 of the License, or6 @1 B3 l5 |- O% _5 f3 P
- * (at your option) any later version.
' c( r6 u* ?6 j/ L9 k - *% D$ A( g' t# r/ Y) |
- * This program is distributed in the hope that it will be useful,
& `9 l' z4 \* l! e7 G7 }, p7 x6 V - * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ f# W! Q5 k; D/ o - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 h' s- \- z- w
- * GNU General Public License for more details.
- b/ ^( [5 H6 M4 S }; X1 H - *) P5 }! O' J6 {, g8 ?- j+ h
- * You should have received a copy of the GNU General Public License8 v4 j8 d T/ E$ @% V. m
- * along with this program. If not, see <http://www.gnu.org/licenses/>.$ {8 w- v# z: `: T+ F. g, q
- *
+ y8 `( F$ z1 W) B$ }! K2 P" o - ******************************************************************************5 E( X# W/ b( |
- */) N' {: g" f$ v4 T
- ! ?4 @5 N" a& @, G% Y. X# c' }
- /* Header includes -----------------------------------------------------------*/9 _: R* e' A# u, X
- #include "BUZZ.h"
7 o1 D8 A# b8 c ^; K$ G! T& M - #include <stdbool.h>
; j/ e- x7 ~) |- v0 f' I0 L
0 y- k% X" i9 D; ?& K! D" I2 c- /* Macro definitions ---------------------------------------------------------*/, M: R+ N" d" R S
- /* Type definitions ----------------------------------------------------------*/
% F6 w+ `& O# a0 V9 |& P - /* Variable declarations -----------------------------------------------------*/
4 Q2 G; R9 ]+ c# B - /* Variable definitions ------------------------------------------------------*/
4 m. K' H. M5 T* i5 L: S) s5 d - static __IO BUZZ_Status buzzStatus = BUZZ_Off;9 p* Z! l0 K& j6 i
- static __IO int buzzCount = 0;
: ]2 N! C1 d" t! o6 z; ^# |
" z$ W" K: B( e0 ?7 S" P- /* Function declarations -----------------------------------------------------*/, E6 N1 k* ]( } T. Q0 T
- static void BUZZ_PwmInit(void);7 |5 s. N, H+ U+ g [
- static void BUZZ_NvicInit(void);
" K+ ]; S) v7 \" X ^. d* R - static void BUZZ_Init(void);
: m$ N7 g: N+ e, O4 J - ' W9 U |8 P8 e' Y/ t, K- l6 J! [" P" j
- /* Function definitions ------------------------------------------------------*/
- U6 n9 T( I, }; N/ k& A - # u! X$ K& ^* x+ C1 ~3 U& m( Y
- /**2 H6 t+ a) w' \( d+ ^
- * @brief Buzz pwm initializes.# G3 O1 j& W8 \' g2 Y2 `
- * @param None.
& o3 @2 s( Q2 j! a - * @return None.
9 @% F4 V. s% m. H1 M6 U; w0 Q5 x - */
3 P% v; ], W, T4 Q j9 a0 U - static void BUZZ_PwmInit(void)1 F9 Z+ A1 ?; d$ e7 m
- {3 r S6 ^& F2 _4 l5 g
- GPIO_InitTypeDef GPIO_InitStructure = {0};
) c2 y7 o+ J5 f$ \$ W. [$ S" V - TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure = {0};! l& x2 t3 x/ h3 A( m# {4 z
- TIM_OCInitTypeDef TIM_OCInitStructure = {0};6 |! W- M% }* ?6 f* [1 Z1 G
- $ V$ O! \; Q$ x$ o
- RCC_AHB1PeriphClockCmd(BUZZ_RCC_AHB1Periph_GPIO, ENABLE);
2 s1 Q5 z# }; J1 L - RCC_APB1PeriphClockCmd(BUZZ_RCC_APB1Periph_TIM, ENABLE);
+ g0 V9 g6 n# s s K0 r5 w8 K - 4 Q- v! }- B0 K3 l8 w+ z
- GPIO_InitStructure.GPIO_Pin = BUZZ_GPIO_Pin;
/ C2 X' [" r6 ~0 ~3 t Q; r - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
?- C; c* Y3 j- [; N8 u - GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;: Z' |4 y [" V4 T/ I
- GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;) s3 i* V4 F$ ]! V1 c. h A
- GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
# k. r9 ^" ] z) }" H- ^. p* v# y - GPIO_Init(BUZZ_GPIO, &GPIO_InitStructure);
; g4 f! E, j/ X. f - & t; Y% j; J1 y- ]" @
- GPIO_PinAFConfig(BUZZ_GPIO, BUZZ_GPIO_PinSource, BUZZ_GPIO_AF_TIM);& f k0 s; l4 B! `4 T
-
' ~7 t9 m1 S7 f' g r, D - TIM_TimeBaseStructure.TIM_Prescaler = BUZZ_TIM_Prescaler;- ~( H' R4 }# w( D; [
- TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
& J* P$ Y- U! s/ |- d1 y - TIM_TimeBaseStructure.TIM_Period = BUZZ_TIM_Period;+ u" X9 A" U& s6 q/ j3 J4 _5 L
- TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
; z" l* v; F+ E+ ` - TIM_TimeBaseInit(BUZZ_TIM, &TIM_TimeBaseStructure);, K4 e7 R( [' l
- $ I% v3 @! W. ~ L! }. N, w8 {
- TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
* m9 F7 y2 u1 V4 U( [- k - TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;3 W$ f; R- v$ v; ]! F
- TIM_OCInitStructure.TIM_Pulse = 0;
0 e, k- z, y$ s7 s - TIM_OCInitStructure.TIM_OCPolarity = BUZZ_TIM_OCPolarity;
# d$ V. ]8 y+ ~- ]/ @% ^; m - BUZZ_TIM_OCInit(BUZZ_TIM, &TIM_OCInitStructure);
( [! E. c1 j% m j( c( g! u -
/ |, ]& Q2 @3 {8 Z - BUZZ_TIM_OCPreloadConfig(BUZZ_TIM, TIM_OCPreload_Enable);, G. h7 Z' u3 D& R. B# Z6 O/ y
- TIM_ARRPreloadConfig(BUZZ_TIM, ENABLE);
. l8 g6 N' A( Q8 m - TIM_ITConfig(BUZZ_TIM, TIM_IT_Update, ENABLE);: [5 r( R% ?$ t6 T( Z, x0 |- s
- TIM_Cmd(BUZZ_TIM, ENABLE);4 E/ J0 T1 p: I, s7 N0 }
- }8 P: e3 f" y1 q$ S" y: E: r/ c
- " S3 y ] C" K9 v& u+ Y
- /**
# C0 `/ K* H" m - * @brief Buzz nvic initializes.
. |. g0 p# r3 a% T - * @param None.) Q$ D) {2 I0 `( h* ?5 \1 _
- * @return None.
5 W/ W2 ~5 ]- k- e% i9 b" ~9 D: `2 o - */& @+ k& |6 h4 g6 X
- static void BUZZ_NvicInit(void)
' e5 T( z) Y4 V% [ - {
Z/ X8 F+ I- r1 Y% X6 Q4 T- O# A, q- N - NVIC_InitTypeDef NVIC_InitStructure = {0};
, `9 h$ { u( h9 M -
2 g2 _1 _9 [# d% ^+ v6 @5 h' t+ x - NVIC_InitStructure.NVIC_IRQChannel = BUZZ_TIM_IRQn;5 Y5 b' R+ q4 F4 {: |1 `; G. e9 g% P- Z
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = BUZZ_TIM_IRQ_PreemptionPriority;
" I$ r4 T3 [9 N8 U - NVIC_InitStructure.NVIC_IRQChannelSubPriority = BUZZ_TIM_IRQ_SubPriority;7 |2 @0 [7 S" n5 V& k) {
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
5 d1 f1 d% W* Y3 D" Y* ] - NVIC_Init(&NVIC_InitStructure);
) W* j1 x9 i4 C+ `& f - }
5 @0 _% J% @! w! Z2 I
. ]8 K( R8 n2 p, {, s- /**
1 }, J( [4 ?* S7 Y3 P- o/ Z% C - * @brief Buzz initializes.
! z; m' X% X* P- n - * @param None.6 f0 U# c3 `8 ^* D9 S- b3 Q& _
- * @return None.
0 D$ t. x' c8 `, A6 O: m - */' v5 }+ h8 o) o/ z- K/ r
- static void BUZZ_Init(void): n' Q- H3 q3 y0 V& l' D1 @6 H
- {! X/ y6 n( `8 U; I4 {1 B @
- static bool init_flag = false;' J& C* i0 i7 d4 X; ~4 L
- : p& m1 b& o W2 M; Q; O+ K% X
- if(init_flag == false)
- v+ f4 F9 \$ v' B4 z! C/ P - {
1 R2 Z8 a0 w: `6 \0 b g& Y" ? - init_flag = true;9 a' _* y2 k: k! A, [
- " J9 w/ p8 w" p+ L7 D. D+ A8 I6 D
- BUZZ_PwmInit();/ k" K& G& i! ]
- BUZZ_NvicInit();, t/ W7 f0 w7 Y, C! ~
- }' Q Q( X$ w' X3 [8 M" e
- }
P: x- M6 o/ E1 F
- Z1 R D3 E3 _% e/ A- /**
, E6 g0 L* w, e6 p5 L3 ` - * @brief Set buzz status.
% Q0 X0 N& K2 o2 N; _ - * @param [in] status: Buzz status.
' B! v: s T6 B0 g% L5 H1 r - * @return None.+ o$ t, z1 o8 y" J- C9 g( [
- */
' l- l% j6 K5 c4 P$ j( K( U - void BUZZ_SetStatus(BUZZ_Status status)
1 ~. s* b# Z( g( a! U9 `$ h' d4 u. x. P - {
, J! P* c1 I% u) n1 e - if(status != buzzStatus)
# `4 y7 ~0 D$ t N* S - {4 Y9 U- O0 G: d% b5 m/ Y0 H
- buzzStatus = status;
; ^& D Q$ |3 f' v2 H - buzzCount = 0;4 X. b- J% O* r/ B* N
- BUZZ_Init();
- |" ~. I9 @% `. S - }% L+ {, Q4 T, O; p6 Q. `8 \6 h: E& z
- }
& Q5 A4 h# Y+ L
! H! F; `5 k% X; ^$ c% C' Y- /** J# v% X( b. `7 m6 y3 m
- * @brief Get buzz status.
+ ^; w4 V6 i6 B5 ]( W: W - * @param None.9 D0 D2 s* Z9 p
- * @return Buzz status.
6 O: K m: I- j- I& C - */
$ q1 f# u# q8 f3 A9 o - BUZZ_Status BUZZ_GetStatus(void)
. a& X# x) \. Q- z+ H, c- }" F5 ` - {1 w* L8 r: T1 m* k5 r! a, d' c0 m
- return buzzStatus;
& Q3 c/ A. i0 C6 ^ - }
, o$ _1 S6 a+ ]
- z: ~# _' M( u8 ^- /**
4 W6 {$ H, C, G& D/ _! H2 @( ?% r - * @brief This function handles TIM Handler.0 P! i1 d3 r- s
- * @param None.
$ r" }% W7 u% E$ E9 ~, @ - * @return None.
" m( ?) }4 _/ [3 x9 ~ - */$ \! J- N, X$ `, ]( _
- void BUZZ_TIM_IRQHandler(void)) [% @$ ~" w! Z# i# S; u
- {
( w- k1 Y% x( W+ z. N - if(TIM_GetITStatus(BUZZ_TIM, TIM_IT_Update) != RESET)/ o4 m; U! ]; _2 I: b
- {4 U d# b2 Z9 w, f. \/ h# [( }
- TIM_ClearITPendingBit(BUZZ_TIM, TIM_IT_Update);
) G; T# M! z0 @* S7 K8 `" G -
" E6 b0 H7 E: R V/ ~ - if(buzzStatus == BUZZ_Off)
: Y& K* j- ?( ]( t) L0 l - {
- P! \- g$ w( A5 s! w1 S - buzzCount = 0;
: h4 d; d% R* V8 f% V - BUZZ_TIM_SetCompare(BUZZ_TIM, 0);. U6 v# z; G- w: L, P
- }! f. N5 o4 ?: [+ x( e# o
- else if(buzzStatus == BUZZ_Ring)1 b0 r, [- x4 J: j+ s
- {9 m0 r# `6 Z( U1 `- Y
- buzzCount = 0;
y) h5 T% ~! Q5 U- U - BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
) X, k2 s8 C& n8 s$ f - }$ E- y3 ~, s! _% [: H
- else if(buzzStatus == BUZZ_Drip)( w0 [, z# [ u I! I9 |
- {, z! _! e6 g6 O# v
- if(buzzCount > 1999) U" u- L/ r, W( Y o1 }
- {( L, W+ I$ Z5 O( R5 y0 U2 K
- if(buzzCount > 3999)$ ^& j. [: e( n
- {
) `: V5 @2 t: q q' \! y$ { - buzzCount = 0;0 t, P. Y, B# ^4 S8 U
- buzzStatus = BUZZ_Off;, {& q; S2 w1 Z. o5 J1 w) q2 z
- BUZZ_TIM_SetCompare(BUZZ_TIM, 0);+ _7 ^" E' X$ I8 u, o! u0 N
- }
1 e z( A0 i G/ _& Z - else! {9 ~; g/ z5 u. P5 [0 X5 _
- {" q- J8 Y; @+ e5 S
- buzzCount++;
8 x0 Y7 u2 s* z1 w, } - BUZZ_TIM_SetCompare(BUZZ_TIM, 0);1 ^% l# ~5 Y4 d1 w1 [
- }! X5 o* _: d% R& n
- }/ o8 s4 T! L6 C: p, |0 F
- else' O$ ~: i- p: H# u+ @$ q$ V- J
- {
j. M. Q5 T2 @$ i2 D - buzzCount++;' ^6 L; t3 E8 g# M( _: P% j( h
- BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);! H q' H& m4 i P
- }
6 |& p8 S$ L( \1 Q - }
( y5 z. p6 E, K' q# E% t - else if(buzzStatus == BUZZ_Warning)8 K7 E0 h0 z% T* D+ U
- {
5 Y$ H+ W: f* f3 C8 k" Z3 |# x - if(buzzCount > 1999)
- Q: j7 n$ H& P$ \; g; @: _/ [ - {/ h, T. T' H0 }8 n1 u& E: R
- if(buzzCount > 3999)5 ?* ]! K( Y8 p0 N
- {
: H2 q s+ | O* \ - buzzCount = 0;7 L2 V# W% [$ g$ X2 ?
- BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
1 w3 P5 [/ J- X) V1 F+ @. C - }
/ C# k3 b7 R6 v) {$ x - else* s( p# D, @9 J) v$ C5 ?
- {1 y$ h: }' q: j4 s* C, D
- buzzCount++;! h7 Z) `# B* h. P; Z% M
- BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
+ P# q* [& ^1 M$ A% ?6 c& E - }: {0 B, J/ J# ~ h( h
- }, ^( p: O! y/ L7 k X+ p& T( l' v
- else! G0 ]/ t4 Y. B$ ^7 w" @& ?! c! N6 B
- {5 N/ ^( p6 Q$ ]9 H k. H
- buzzCount++;
7 k* z' n2 ~7 H3 g! @ - BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
! h% E) f* v* E - }
+ K7 w) { g! X4 ] - }
) [# J4 k3 H4 E) O - else
- T6 R! s0 B: ]8 Q1 U - {; y( S p/ g" b3 W
- if(buzzCount > 999)1 o2 c9 N: H& [* E2 z5 X
- {
3 l) E; f! P* a5 c' j - if(buzzCount > 1999)/ u7 r! R& L7 ~6 h' v5 R
- {7 e9 E% V& O" t
- buzzCount = 0;. `6 x8 h; Z3 C& O% k0 ^ m
- BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);, d; |: }9 t" w
- }
; q7 L( W0 j5 C5 N) q - else% e: q5 a9 Y& T$ s3 r9 r" f
- {
4 ]4 s2 z' s! n+ D6 r% f% w% [6 E - buzzCount++;
m7 J# m6 j+ C p - BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
# N, ^# R4 A7 K6 | - }
1 q K" S/ R1 u# I4 E - }
1 V) v2 \7 E8 ]1 g7 j5 B5 \ D - else1 n+ o- A2 B3 o q& t/ c
- {
; d+ q% \: l- s - buzzCount++;
/ Y' t% `7 c. s! W# p, v - BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);- X$ R3 l& Q. |% [; Y
- }
3 Q9 E) r* V8 w; g - }2 d1 p9 ~+ g! W: U
- }
9 M, A: }: w4 a/ O2 [* ~ - }8 u/ i$ k4 q9 l* P1 i# D
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6 {5 |, y+ I0 \3 T main.c文件
1 M/ n' s! C7 w+ w. P" v- /**
a: w$ Q+ N/ P" J3 e - ******************************************************************************
4 h2 W V8 h0 v. v9 z2 e R, C - * @file main.c
+ {/ [. r$ ^: X& u7 {) J - * @author XinLi
, ]3 i8 E7 b1 _1 [* ^ - * @version v1.0; h! a& e0 @) L8 F
- * @date 24-October-20177 g( r# `0 G1 S& K- n5 ^# y) B
- * @brief Main program body.% y' R! n4 Z2 b" `& _" B3 q
- ******************************************************************************
# }; f* @* j: X' y' g - * @attention
1 K- G/ Z$ q1 ^ - *" s+ F. j1 S6 L# K
- * <h2><center>Copyright © 2017 XinLi</center></h2>/ I: j5 N5 N5 U' H
- *
3 M. F+ p K/ E& h& u/ F0 G3 R - * This program is free software: you can redistribute it and/or modify x% K3 D; L0 l) N9 I) { J
- * it under the terms of the GNU General Public License as published by
; n* ~/ a' O# e* B - * the Free Software Foundation, either version 3 of the License, or. [* I+ t3 D# Y& J, [) `
- * (at your option) any later version.8 X/ L( n8 [$ c) [0 i
- *
" r0 R! \( \' N: ^5 ^ - * This program is distributed in the hope that it will be useful,+ u: J* a$ D- p/ l4 D# C
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
) z9 ~1 \5 K2 C& N( h) r - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
$ N, n+ u/ Z/ G( N - * GNU General Public License for more details.
+ y4 |) S; J5 C2 J2 b$ O" E" _ - *! Q# B1 V- P$ {/ `- m4 Z
- * You should have received a copy of the GNU General Public License
6 O, e% Q( o- A7 L# ] - * along with this program. If not, see <http://www.gnu.org/licenses/>.
x; f+ i7 [* B6 N6 j W - *
7 Q( |& f; Z# ]: W0 i! Y - ******************************************************************************
( M6 Y3 l7 K& s$ K0 m7 Q8 ]3 i - */
+ Y: Z/ q9 `* \' u0 o& b
2 l, T o( ?% U# L$ F- /* Header includes -----------------------------------------------------------*// g" P: z7 R, c& w! z. x' o
- #include "main.h"0 T: F% Z. }/ m: @
- #include "Delay.h"
. l" r1 t" Z/ d( v$ ^ - #include "BUZZ.h"2 [% ~- c4 Y0 ~3 t1 G6 Y" e: m1 c _7 o1 V
- $ U2 Y, d: t; X5 K' A
- /* Macro definitions ---------------------------------------------------------*/2 D& R5 }/ j6 n) l% T* A" [5 a
- /* Type definitions ----------------------------------------------------------*/; T4 L. L: W3 d7 V7 V
- /* Variable declarations -----------------------------------------------------*/
; f2 D: g* k: w+ y$ A* p - /* Variable definitions ------------------------------------------------------*/& ]$ g9 d1 ^0 v3 x _0 ^# I8 C( J' ?
- /* Function declarations -----------------------------------------------------*/9 X5 [ e+ {) m6 b
- /* Function definitions ------------------------------------------------------*/
4 H/ x6 n/ ?4 z, g. V' ~
7 E3 K5 f: |& L6 r! ?( s# G: F1 c- /**
. n* C6 L' B& Z: Y" c9 m. I - * @brief Main program.
* A2 n5 F% |; m" K - * @param None.
9 h2 t% e& T) O. u! w) T; U, ? - * @return None.
! d( }0 R# f% l0 s - */
- W4 e* L: Q& Z2 |+ ?* Z( r7 m - int main(void)
0 l! r6 |% J9 J - {7 y* M3 `$ ]$ w! `- b8 F& b5 ^$ y1 w
- for(;;)
) g- O/ v/ F3 G& m- [( j - {! J3 l# |/ H! `) H! g9 f; q. i
- Delay_s(5);
! [7 o: \0 t# e1 N: h7 A7 _ - BUZZ_SetStatus(BUZZ_Drip);% Z$ _8 m k. u# |% ?6 Z
- Delay_s(5);/ J) |; q; u9 G2 G+ d, e) a- S
- BUZZ_SetStatus(BUZZ_Ring);& H) Q4 Z5 f/ B8 a( U9 U$ G
- Delay_s(5);
' O* _/ ?0 V" C% F - BUZZ_SetStatus(BUZZ_Warning);
8 B4 C) j+ T% l' G( d - Delay_s(5);
# I6 B8 R ^4 x! V1 z; f# O - BUZZ_SetStatus(BUZZ_Danger);
7 Q! [4 z' S. A ^" p( m - Delay_s(5);9 t+ G! l: E7 l; r
- BUZZ_SetStatus(BUZZ_Off);
5 I/ T$ Y" i; \! ^; X J - }
^0 e, r( v' `& ~; [ - }$ r4 D/ A! F. [: X
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7 t4 F7 |0 V' s3,注意
5 L; k# H* \( @) i' E2 o1 \) S6 H4 N$ L, ]5 p$ @
修改接口需要注意,蜂鸣器的驱动方式和使用的TIM。对应修改PWM输出电平和TIM时钟配置函数。6 }9 J; g4 |5 @" F
" m! |4 Q- R S
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