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ie8及以上

STM32F4(BUZZ)

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XinLiYF 发布时间：2018-3-9 20:55
STM32F4(BUZZ)
GitHub仓库：http://github.com/XinLiGitHub/STM32F4xx_BUZZ_Example& _- F" E$ n7 m# y2 `9 o: W
PS：博文不再更新，后续更新会在GitHub仓库进行。# E# u8 L0 F# q) ^8 P+ e: d  z7 K
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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。) f) G  ?6 P+ Z* J- ^  @  M  O

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1，开发环境  C3 L3 U  v/ z5 ]' p. K+ X
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     1，固件库：STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
! u1 ]. v  V7 R) _5 B, V     2，编译器：ARMCC V5.06* @' Z1 h( t7 G- ~9 M
     3，IDE：Keil uVision5
8 |) ]! y; \: P* T     4，操作系统：Windows 10 专业版
, g+ J* t  S9 r0 @  a1 c- v" J7 h5 \5 F6 r# N) m
2，程序源码
2 G2 X2 p+ \4 v, {& k  R1 W      BUZZ.h文件
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  1. /**' L3 }1 w  K# F3 @! {) ~
  2.   ******************************************************************************
    7 n! T  W) P' G( r/ S/ ^1 M3 Z
  3.   * @file    BUZZ.h
    ) S8 Z+ N* D; Z% y
  4.   * @author  XinLi2 _) P2 Q/ Z2 D1 I$ t  i
  5.   * @version v1.0: |5 j% q$ g  ^
  6.   * @date    24-October-2017& \3 }( Y0 a& ]! a6 ~% K1 b: ]
  7.   * @brief   Header file for BUZZ.c module.
    5 g: |- B' a5 [
  8.   ******************************************************************************
    : s3 N* O" H. Z, e$ P$ y
  9.   * @attention
    + y  W' n4 K* P* k2 a8 u
  10.   *+ D2 T5 M) J& N
  11.   * <h2><center>Copyright © 2017 XinLi</center></h2>) f5 y2 t! B9 _* z6 P% v% Y
  12.   *0 v6 \( N# l, N% L
  13.   * This program is free software: you can redistribute it and/or modify
    1 t% @1 L$ @0 U, v& G" \
  14.   * it under the terms of the GNU General Public License as published by' |2 L& X) z) d7 B( p
  15.   * the Free Software Foundation, either version 3 of the License, or
    ) R( S' ]4 ^0 H( I
  16.   * (at your option) any later version.
    ( R# v7 D# M3 _( R- z
  17.   *# m) M+ ^( P# M, \8 H4 x
  18.   * This program is distributed in the hope that it will be useful,) g% V6 z- E3 T: a2 [
  19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    ( _: }/ Q; d$ h
  20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the3 o$ W( v+ a$ o" H
  21.   * GNU General Public License for more details.4 S+ D% R+ b" u- ~4 G1 V
  22.   *
    & H- h' d6 p4 B6 f2 D8 i
  23.   * You should have received a copy of the GNU General Public License2 a( q$ k: h- P' K9 n
  24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    % b7 I2 R1 J; `+ {) V2 Z
  25.   *
    . i( Q) A: u& \% r& _3 x- A
  26.   ******************************************************************************) g: K- Z1 z% K1 t3 p* L
  27.   */
    9 C& g8 c% ?3 P; p! a
  28. " h$ f; t( I8 x, B
  29. #ifndef __BUZZ_H
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  30. #define __BUZZ_H" z" _5 \6 h! w4 W" v5 \' M; r
  31. 4 D$ I/ @- x% c& `* J$ |0 j
  32. #ifdef __cplusplus  c& K9 V7 |( |! q4 p; ^
  33. extern "C" {
    2 S$ ?2 O$ Y. Z% M
  34. #endif
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  35. * q( g* X3 p( R' m' ]" u# o
  36. /* Header includes -----------------------------------------------------------*/7 V. S, N$ U5 e$ I2 p7 Y. Q! T
  37. #include "stm32f4xx.h"& g4 O% A1 h+ B7 x2 Z8 }* x

  38. " w; E# n) j: ^: \
  39. /* Macro definitions ---------------------------------------------------------*/
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  40. #define BUZZ_RCC_AHB1Periph_GPIO         RCC_AHB1Periph_GPIOB+ c) {7 u9 q# Q( D
  41. #define BUZZ_GPIO                        GPIOB% e9 I% {3 H* y0 S0 Y4 u) |
  42. #define BUZZ_GPIO_Pin                    GPIO_Pin_83 D; a; F4 P8 O, N  f

  43. 4 K5 ~3 _  [. I8 K
  44. #define BUZZ_GPIO_PinSource              GPIO_PinSource8
    # N# i0 ~+ _& V- Z$ {8 Q
  45. #define BUZZ_GPIO_AF_TIM                 GPIO_AF_TIM4) R( I3 y) j, v' C! J8 j7 y2 h
  46. * W: E/ g) P; g* O% G0 ]: e- G6 n& e
  47. #define BUZZ_RCC_APB1Periph_TIM          RCC_APB1Periph_TIM45 @8 ^. ^: B  s8 }/ ^2 K
  48. #define BUZZ_TIM                         TIM4
      v1 l  m% ]; V

  49. ( W8 l" V6 L0 E9 m9 j+ e
  50. #define BUZZ_TIM_Prescaler               (83)  /*!< Clock divided to 1MHz. *// {: p$ X1 @% b& f8 d7 s$ o
  51. #define BUZZ_TIM_Period                  (249) /*!< 250us timer interrupt. */: l* X8 g+ u, i! {- l9 m

  52. 7 ]" C1 }& ?% d  \( s5 w+ n* n
  53. #define BUZZ_TIM_OCPolarity              TIM_OCPolarity_High
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  54. * A  Z6 U3 P* ]9 z: p
  55. #define BUZZ_TIM_OCInit                  TIM_OC3Init
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  56. #define BUZZ_TIM_OCPreloadConfig         TIM_OC3PreloadConfig
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  57. : _- o7 {0 H8 @3 n# C; D3 N. n
  58. #define BUZZ_TIM_SetCompare              TIM_SetCompare3
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  59. : ?5 q, w" K' R
  60. #define BUZZ_TIM_IRQn                    TIM4_IRQn) O9 u2 n" X, w9 G9 o+ V
  61. #define BUZZ_TIM_IRQHandler              TIM4_IRQHandler  S, _) X9 z8 l
  62. #define BUZZ_TIM_IRQ_PreemptionPriority  (0)9 ]% }' @/ E# K, Q
  63. #define BUZZ_TIM_IRQ_SubPriority         (0)0 e# _& v. v3 z3 }
  64. 8 u1 ^2 l- O! |8 K) ]
  65. /* Type definitions ----------------------------------------------------------*/9 k; E; \# i& R7 s4 H
  66. typedef enum
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  67. {
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  68.   BUZZ_Off     = 0,; X' G. [$ O" C! [3 a) [' U, w) ~
  69.   BUZZ_Ring    = 1,  `, U0 v, c$ v
  70.   BUZZ_Drip    = 2,% `8 N8 c  l, H  D: @! o1 G, [! X
  71.   BUZZ_Warning = 3,8 N2 R1 b; g9 q5 T- p% G; z
  72.   BUZZ_Danger  = 4
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  73. }BUZZ_Status;7 j! }$ m7 i) P; i
  74. ' o" X$ V( M5 j
  75. /* Variable declarations -----------------------------------------------------*/* L' G% N( ?1 Y' l7 Z
  76. /* Variable definitions ------------------------------------------------------*/
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  77. /* Function declarations -----------------------------------------------------*/  H1 j1 e# ~- P7 H4 A
  78. void BUZZ_SetStatus(BUZZ_Status status);
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  79. BUZZ_Status BUZZ_GetStatus(void);. H( k- \0 N5 }+ f* Q' v6 M; k0 L
  80. 3 O. h" Q" {, D
  81. /* Function definitions ------------------------------------------------------*/7 n! C" `( X" c$ B4 O6 V+ ]
  82. . W, c4 r7 ]) @6 `
  83. #ifdef __cplusplus
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  84. }
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  85. #endif* M) ^4 _' \% U- i& D- ]
  86. & q4 P. m. S/ R) z. }" y/ _
  87. #endif /* __BUZZ_H */
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复制代码
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      BUZZ.c文件
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  1. /**
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  2.   ******************************************************************************& d& ^4 t$ t: A/ ~$ l- }! V% L
  3.   * @file    BUZZ.c
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  4.   * @author  XinLi
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  5.   * @version v1.0
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  6.   * @date    24-October-20177 u) ~1 a( G' y
  7.   * @brief   BUZZ module driver.
      ?1 n& k* r4 G+ J# E( T
  8.   ******************************************************************************& R( a( n+ \, W4 P) r9 y: \
  9.   * @attention! P2 F& {& t4 h" q: s0 i; X/ M
  10.   *  A0 D) T" h% @6 Q$ t; k: i! b
  11.   * <h2><center>Copyright © 2017 XinLi</center></h2>2 X! K) H6 |# O* [
  12.   *6 `8 L- g: V1 I  g' B( ?% B+ ^1 s1 z# W
  13.   * This program is free software: you can redistribute it and/or modify4 F) S+ O; w3 K9 D  c
  14.   * it under the terms of the GNU General Public License as published by. t- R& d! q- N7 L/ N! b& [* X
  15.   * the Free Software Foundation, either version 3 of the License, or
    ' t5 X& l, P! |5 e/ @# p
  16.   * (at your option) any later version.: E. {8 C0 k0 k) |3 r
  17.   *
    + {; n! `2 b3 p1 _2 o: ]+ H( [+ T
  18.   * This program is distributed in the hope that it will be useful,
    - x: {/ v/ e1 q  U
  19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of6 D( G( ^" b9 C2 a! T( B
  20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the) U' r3 E7 F8 x& v7 G/ \9 I
  21.   * GNU General Public License for more details.0 K  q3 H. x& G, Z2 Q& j6 `6 n% O0 ~) p& X
  22.   *3 L0 h$ q* j+ b  M
  23.   * You should have received a copy of the GNU General Public License8 x7 Q- _2 N/ F, ?* ]% Z! r
  24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>./ L4 }# ^3 Z8 P8 F$ s7 G, f
  25.   *3 t. {; J6 ?6 w/ p
  26.   ******************************************************************************; u# a7 C, _% y3 [) z" H6 e: i5 c
  27.   */2 o7 ~  ]. K3 p' Q% }! [+ c
  28. $ k. d; q5 X0 I4 u9 h
  29. /* Header includes -----------------------------------------------------------*/2 i1 T* c% y6 z0 Q
  30. #include "BUZZ.h"4 O! f7 X, e9 J$ h( i6 i& W
  31. #include <stdbool.h>
    3 P5 t! |( l: c
  32. 8 S! }2 k% n8 y' ]+ l2 X
  33. /* Macro definitions ---------------------------------------------------------*/
    * D8 B9 _) Z, u/ |+ r
  34. /* Type definitions ----------------------------------------------------------*/
    2 U8 K  D. N# I' s0 b
  35. /* Variable declarations -----------------------------------------------------*/6 L3 N# H2 b# c$ k
  36. /* Variable definitions ------------------------------------------------------*/, z: q! y$ l  o
  37. static __IO BUZZ_Status buzzStatus = BUZZ_Off;4 T4 D: n7 ]" F$ {* W
  38. static __IO int         buzzCount  = 0;
    . n" \* @* c) A9 ]0 T
  39. # v# g! g/ m: {$ q0 c" a' K
  40. /* Function declarations -----------------------------------------------------*/
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  41. static void BUZZ_PwmInit(void);
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  42. static void BUZZ_NvicInit(void);# i8 V# B4 R$ u6 V
  43. static void BUZZ_Init(void);
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  44. 4 I" F/ [" Y5 f& |; L) i
  45. /* Function definitions ------------------------------------------------------*/
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  46. ! e8 V6 i4 U, @9 v+ Q* U, }+ k
  47. /**6 x" u" q5 o+ [# ^# }1 W4 Y
  48.   * @brief  Buzz pwm initializes.
    8 [" o; N6 `; Y% \9 {
  49.   * @param  None.( s) K/ i( a) q# I, M) |6 q
  50.   * @return None.
    ) s# u# `* Z4 a+ J! {
  51.   */2 Z' \' A+ f' {9 a0 V
  52. static void BUZZ_PwmInit(void)) y" J& b6 i  }+ \
  53. {
    6 l# {/ F5 C5 \) |/ A
  54.   GPIO_InitTypeDef        GPIO_InitStructure    = {0};
      f+ x: {( C6 [% |3 V5 P
  55.   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure = {0};
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  56.   TIM_OCInitTypeDef       TIM_OCInitStructure   = {0};
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  57.   3 ?) p4 W" S! h
  58.   RCC_AHB1PeriphClockCmd(BUZZ_RCC_AHB1Periph_GPIO, ENABLE);$ I# J1 p. I1 |. V( M- P+ T
  59.   RCC_APB1PeriphClockCmd(BUZZ_RCC_APB1Periph_TIM, ENABLE);
    , U7 g3 D" {( Y- i1 s
  60.   
    ' A5 u9 S# @# o3 {
  61.   GPIO_InitStructure.GPIO_Pin   = BUZZ_GPIO_Pin;
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  62.   GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
    % d' r+ E/ \, y& {& t
  63.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;+ D3 @/ m& ~! [% T
  64.   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;; D' D9 R; Y3 E1 G* P; |' w
  65.   GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;* L( D; u: A2 [0 x8 C$ a
  66.   GPIO_Init(BUZZ_GPIO, &GPIO_InitStructure);! \, \% c* Y/ j# g+ ~; ^
  67.   ; u7 r/ b1 H; L4 t
  68.   GPIO_PinAFConfig(BUZZ_GPIO, BUZZ_GPIO_PinSource, BUZZ_GPIO_AF_TIM);8 \2 m4 y' U4 y3 k( ?' U! c2 |
  69.   
    7 @+ i9 ?( s6 z: f( c* x" @
  70.   TIM_TimeBaseStructure.TIM_Prescaler     = BUZZ_TIM_Prescaler;
    4 G- C' e  \, F2 N
  71.   TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;5 q/ q2 N6 N* {! x, w, J3 @
  72.   TIM_TimeBaseStructure.TIM_Period        = BUZZ_TIM_Period;3 V. E6 t8 _* k6 j0 [0 w9 G
  73.   TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    ' e5 U4 F' I1 [- c2 f& e6 V( w
  74.   TIM_TimeBaseInit(BUZZ_TIM, &TIM_TimeBaseStructure);
    6 g* s$ \' L& v
  75.   % u3 W! a& _& v5 r, I
  76.   TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM1;
    ; ?: s8 |; t3 B
  77.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;( g0 {6 ]( Q5 B2 L& S+ A1 ?6 L$ E2 E* @
  78.   TIM_OCInitStructure.TIM_Pulse       = 0;
    3 r$ R9 q; A: u" h
  79.   TIM_OCInitStructure.TIM_OCPolarity  = BUZZ_TIM_OCPolarity;/ ?' f5 g* V! R. o+ l) B: f
  80.   BUZZ_TIM_OCInit(BUZZ_TIM, &TIM_OCInitStructure);
    5 ]6 W. y6 ]5 I) D6 @0 E
  81.   
    6 @5 T! z/ `6 A5 t; S' M2 d
  82.   BUZZ_TIM_OCPreloadConfig(BUZZ_TIM, TIM_OCPreload_Enable);: S1 r7 n6 f5 y7 }0 J
  83.   TIM_ARRPreloadConfig(BUZZ_TIM, ENABLE);( ], P& z& {) ?( ^; W; k
  84.   TIM_ITConfig(BUZZ_TIM, TIM_IT_Update, ENABLE);
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  85.   TIM_Cmd(BUZZ_TIM, ENABLE);
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  86. }2 c" x7 P8 _1 V; h; i

  87. # y; a' R0 \3 w; p9 P; y
  88. /**1 E+ i3 D! c% v2 S  P
  89.   * @brief  Buzz nvic initializes.
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  90.   * @param  None.
    ( \: v# i) G% w: @/ N6 b- Z
  91.   * @return None.) R% q- ~9 Q4 {& m' ^
  92.   */, j$ K( ?9 \/ A- o4 V: E6 ]* u
  93. static void BUZZ_NvicInit(void)/ n+ K9 x, X) C& [5 R! Q
  94. {
      \! i9 c0 ^/ u; y$ d  d
  95.   NVIC_InitTypeDef NVIC_InitStructure = {0};' M" K& q5 J3 v/ \+ e
  96.   6 v' Y: c& f: \% ?  B$ O
  97.   NVIC_InitStructure.NVIC_IRQChannel                   = BUZZ_TIM_IRQn;
    / p8 ?+ r* [' H* e( D4 r
  98.   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = BUZZ_TIM_IRQ_PreemptionPriority;+ Q1 ^1 _' S+ w! ?! F0 `5 N
  99.   NVIC_InitStructure.NVIC_IRQChannelSubPriority        = BUZZ_TIM_IRQ_SubPriority;
    ( V6 ?5 j, {& W  i/ k' R+ B& Y5 f) u7 d
  100.   NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
    7 _8 t9 h7 C5 x& d9 d& E$ Y
  101.   NVIC_Init(&NVIC_InitStructure);
    3 b. \. X3 E$ H9 i
  102. }  V1 K  H# I: }: v, R( A7 [; J
  103.   e7 s9 |7 X) |: e3 ?0 ~1 b2 C  ^
  104. /**
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  105.   * @brief  Buzz initializes.
    # A! M( z) S. I1 D6 a! s, L
  106.   * @param  None.0 v+ O6 A, n2 h  v8 g4 l
  107.   * @return None.0 {: H) u' }- t4 z) q4 |% Y* h9 D
  108.   */
    " i" u: V# m" d& M
  109. static void BUZZ_Init(void)
    4 ^) m& J# g- C, M, R4 Y! T9 m+ L
  110. {
    % m/ J, y% G9 X5 p& ]
  111.   static bool init_flag = false;7 ^' v1 u: y+ R$ H* l
  112.   
    + }6 `( n) h  i& Z
  113.   if(init_flag == false)6 D/ ?6 _- O! p. k" `: M! U' {
  114.   {, |9 b4 X4 m  p' N
  115.     init_flag = true;" Z4 r; j: V: n. O% ^: e2 Q( v9 L
  116.    
    4 T, C0 ^2 m2 g) b, `: o- X' r) ^
  117.     BUZZ_PwmInit();
    " J% q( f/ I! h6 p! ~
  118.     BUZZ_NvicInit();0 ]0 m5 I( X0 V& G" Q2 `/ M
  119.   }
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  120. }0 ~: x( V# P# {" H  @# {8 k
  121. + t  K% d0 I- y7 R
  122. /**
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  123.   * @brief  Set buzz status./ m# A7 E- E4 b. [& Z/ `
  124.   * @param  [in] status: Buzz status." E$ [& W1 G% V
  125.   * @return None.1 }7 O* K, {* A5 r
  126.   */' ]6 f6 t- r8 m6 I) u$ u
  127. void BUZZ_SetStatus(BUZZ_Status status)
    5 b) {2 N9 Y( t! J. L+ F" _* i
  128. {; m5 q' d! j! s
  129.   if(status != buzzStatus)
      r% p% ^6 B9 {
  130.   {+ u# r1 h+ S7 V" P( n
  131.     buzzStatus = status;  t5 F, w! J1 d/ w; ]5 b/ F$ m7 S. ?
  132.     buzzCount  = 0;$ k- A& ?5 i  w5 E1 |- ]3 F
  133.     BUZZ_Init();# r* A' E8 h6 S+ l; P4 E$ i4 g" d
  134.   }
    8 s) I* G3 O& f7 i9 h
  135. }
    ! y' G! p% [9 R& v. d

  136.   b3 z! M  e0 K" t
  137. /**
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  138.   * @brief  Get buzz status.
    ' [( H' P; [! w- P! o
  139.   * @param  None.' m6 R; r0 @% J6 ?; T( Y; l0 \
  140.   * @return Buzz status.9 D1 {) \/ O0 |) y
  141.   */5 A& [5 Z9 ^0 {
  142. BUZZ_Status BUZZ_GetStatus(void)
    8 a. l$ r7 e8 R' r
  143. {
    9 X4 K' A! J4 H( n4 O1 U& Q  `, p
  144.   return buzzStatus;
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  145. }
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  146. 0 Q1 ]! t. T5 d
  147. /**
    + I  {; r6 ~8 ~  z0 s9 K
  148.   * @brief  This function handles TIM Handler.$ I4 \8 D8 x& Z" |
  149.   * @param  None.
    & `- H; E0 ]2 y; n* j! v8 x- z
  150.   * @return None./ @' _- X  r/ }' c5 E2 j; }
  151.   */
    + ]* t* o# X# P$ l
  152. void BUZZ_TIM_IRQHandler(void), ^& f  V8 S; h. |- u) c
  153. {1 f+ H5 z5 o4 i0 e1 ]3 M! V4 p4 K
  154.   if(TIM_GetITStatus(BUZZ_TIM, TIM_IT_Update) != RESET). `8 k9 j4 t' u/ [/ o) W
  155.   {* r; Y, W' @7 m6 n# r& x' M- I
  156.     TIM_ClearITPendingBit(BUZZ_TIM, TIM_IT_Update);) B. j/ f% h# G4 u7 \' S5 c4 p
  157.    
    ( N6 ?/ [; c% J% e9 H& h
  158.     if(buzzStatus == BUZZ_Off)- R% C* H- z: t, r( G6 l. J% G
  159.     {9 [* O  D. F: o5 n7 S  {6 v6 R5 j
  160.       buzzCount = 0;
    9 p) I- Q$ [; p9 S" [- a8 m9 R
  161.       BUZZ_TIM_SetCompare(BUZZ_TIM, 0);3 E* i4 {4 c' f' k4 `9 {: v
  162.     }
    , C& b' s7 [8 }: F3 O. a" j
  163.     else if(buzzStatus == BUZZ_Ring)
    ! F' Q; C- b2 ?  S& Q
  164.     {' }0 j1 y  T- U# W  v
  165.       buzzCount = 0;
    , x8 e. i3 }2 y5 g5 Q3 l; g
  166.       BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    : g2 f% L/ I  f- \/ i6 r
  167.     }  Q0 k" T( [" P
  168.     else if(buzzStatus == BUZZ_Drip)
    % p  u9 g" L/ s) f
  169.     {
    ' F& E* c0 q: ]3 r" ~
  170.       if(buzzCount > 1999)3 o, E1 @, l* K' A
  171.       {# Y& C- r; ~" y  V* Y
  172.         if(buzzCount > 3999)' N; p# X. Z# [; G2 D! X
  173.         {! _; X  u* i( v6 J! w: Q
  174.           buzzCount  = 0;
    ; f7 O$ ], R9 \& X! v/ ]+ |/ l
  175.           buzzStatus = BUZZ_Off;; J' Z. P* P# T- O2 @- M
  176.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    ; R; r  I& x7 W
  177.         }
    ' x% _* G2 H, {1 k2 a
  178.         else
    ; H. L) N/ h. d
  179.         {
    ( u( J( F6 ~7 `3 A
  180.           buzzCount++;% p) i  i( e& R
  181.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);! y. e3 F2 `' O7 C7 `7 Z
  182.         }; \7 U$ w# l1 G* u" ]
  183.       }- [! L: H- z9 A1 I$ M; I
  184.       else
    . H. F2 m$ O4 M4 M
  185.       {
    5 e9 O% I0 M2 E+ l$ c4 f$ ~4 k
  186.         buzzCount++;
    + A- G+ M! `& V) d! g6 m
  187.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    & T! I7 m. Z$ M; R4 i$ F" }
  188.       }
    . H8 @7 Y( L: G0 [5 B. }# \: o
  189.     }8 n& ~9 {9 d' p( Y8 w+ e; D) T  ?
  190.     else if(buzzStatus == BUZZ_Warning)
    " L# j2 g% x' d& \/ ?, D& U% i/ d
  191.     {& S" }  i) g& I2 u
  192.       if(buzzCount > 1999)
    6 H8 N* H6 N; ?
  193.       {
    + S) D# d, u3 e& p8 d$ |9 e
  194.         if(buzzCount > 3999)! `; W4 G6 E9 q( B5 q
  195.         {, ]* r4 H' ]; m  p7 U% I
  196.           buzzCount = 0;
    1 p; r3 B& F  B  _' q
  197.           BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);& h* \7 Q: ?- G4 U
  198.         }
    8 S& l* K% [* I5 x
  199.         else" E& f. @% G+ `
  200.         {; U, O' H0 r$ W2 B
  201.           buzzCount++;' C7 P( k0 k( ^3 ^
  202.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    - u; v: L- l$ I/ N: y$ D' u, I2 Z
  203.         }5 Z7 I4 D* T* C- v% w, ]
  204.       }/ E- B1 f8 w) _1 Q
  205.       else- r/ W9 S* o8 g9 A
  206.       {5 u+ c+ S( }6 z' t) `
  207.         buzzCount++;
    , l! l+ F& R, z+ f6 M
  208.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);- _$ d" L1 l. e2 b% t% ?
  209.       }# d$ |- r' S: D% n4 I0 {
  210.     }
    7 q: F6 |: h5 D5 w+ N* `
  211.     else
    + X( P3 o+ Y  P4 S" c8 B0 U
  212.     {
    7 R# P3 g: }, ~! p* E
  213.       if(buzzCount > 999)) x; F( `( T6 y" n& w" [
  214.       {
    3 F" v8 N8 N- {
  215.         if(buzzCount > 1999)
    $ N; x4 r0 \# H) h4 b9 J. u( S
  216.         {
    9 l8 U+ Z) g7 Y4 S
  217.           buzzCount = 0;
    4 k6 B+ E; f4 B* e! |. p$ {
  218.           BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    8 v0 V1 t$ ^0 L' W. X; Q* y' ?) a% q0 \
  219.         }9 t! i# R0 {+ L
  220.         else# r# A. f( g: V$ N) ?" @, }0 r
  221.         {
    8 \5 ]' s! _6 b$ b0 \
  222.           buzzCount++;
    " o; h* N5 N# b( u
  223.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
    / H% E9 B& d( c4 f6 a9 K  t. O
  224.         }
    : o; {4 {/ ]4 N! {! w1 K
  225.       }: h& [! J* T9 |
  226.       else4 a# t( v* q1 B; `
  227.       {4 o) z; Z# Y: r/ l
  228.         buzzCount++;
    7 O8 r3 b& {8 O+ z/ n7 B
  229.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
    6 m; R& Z# u/ B4 k7 [- t
  230.       }
    - z; R+ H& k' K
  231.     }5 ?& v6 V( {- Z) |9 G0 }* ^9 k1 @
  232.   }8 ?; m" \$ P6 W6 {% p" S
  233. }- e% k  d( ]; d" v/ T5 m9 G
复制代码
* \% x6 z/ E( o8 x$ y" F
      main.c文件3 G5 `: D" z3 \/ E2 B" Y  |
  1. /**
    - b/ R9 Q5 G6 k6 q% `
  2.   ******************************************************************************  `$ }5 I& R: y* u
  3.   * @file    main.c
    " M( y! b( `, l% Z. j1 R& @0 X
  4.   * @author  XinLi
    , D7 z& R) P1 U9 R$ f
  5.   * @version v1.0
    ( I# z, B; j  L+ r
  6.   * @date    24-October-2017
    ( C  j3 ~* U% b* V9 e0 H
  7.   * @brief   Main program body.- ^. Y6 w$ y1 X6 W6 k
  8.   ******************************************************************************
    4 G( z: ]( E0 u3 I4 c' ~/ h9 M
  9.   * @attention
    : ?& J1 `; o1 _* ^, x) f6 a
  10.   *
    $ d% L8 k2 _: {2 M. N
  11.   * <h2><center>Copyright © 2017 XinLi</center></h2>/ R. l( M/ {* b) l: x3 f9 x9 j
  12.   *; V' ?# x/ D- Q4 ~3 w
  13.   * This program is free software: you can redistribute it and/or modify/ P" B' E) [4 k  z7 E/ `( ?
  14.   * it under the terms of the GNU General Public License as published by2 u/ Z8 W( a! P5 K: u4 F9 S8 K
  15.   * the Free Software Foundation, either version 3 of the License, or
    3 `1 D2 A" C. m" M
  16.   * (at your option) any later version.0 e# N4 \5 S* L! h& D
  17.   *
    , V" F) a" f5 E5 r9 C% J
  18.   * This program is distributed in the hope that it will be useful,
    1 ^" n5 A+ N) g
  19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of" O0 W% h* Z. ~2 {; ?  e1 x/ U1 M. q
  20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    3 U2 E# q2 T  z( X
  21.   * GNU General Public License for more details.2 m7 \# v( }8 |7 f
  22.   *) V% P9 u: ?/ `* n
  23.   * You should have received a copy of the GNU General Public License6 K% h- L" A) Q; x8 Z, \/ i
  24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.& m6 ]7 a6 ~6 Q8 a" }# H2 _
  25.   *
    8 K' K3 g9 ^, k! u& F* W) d8 y! X; r
  26.   ******************************************************************************# I$ l% G0 |5 v) T2 T" z, O( K$ R9 l7 F
  27.   */
    & W/ f/ w2 |+ D& W% D+ T8 g) F: C
  28. ! X2 Z3 E$ M5 j5 }
  29. /* Header includes -----------------------------------------------------------*/+ v  }' w4 U' f$ @/ n, t
  30. #include "main.h"
    # ^3 R7 s! R/ W" L# u; h
  31. #include "Delay.h"+ d/ x2 A. d. `- i# l
  32. #include "BUZZ.h"
    $ U" |# H$ y8 S( }$ _) t

  33.   c* w( t5 R& R' N- I) y
  34. /* Macro definitions ---------------------------------------------------------*/
    ; q/ \4 [! d4 b" V% m, {0 `: \6 x8 c
  35. /* Type definitions ----------------------------------------------------------*/
    8 t! s* p3 k" {6 P2 {3 N
  36. /* Variable declarations -----------------------------------------------------*/
    # e- ]" ]# q) P8 m
  37. /* Variable definitions ------------------------------------------------------*/
      z9 a+ [+ Y4 Y# L& m: `
  38. /* Function declarations -----------------------------------------------------*/
    1 s; H3 L9 J" O/ p6 O- ~
  39. /* Function definitions ------------------------------------------------------*/
    - f; Y4 V' {5 \3 P7 W9 \  G
  40. 2 r1 E% j" k$ C2 Z  R
  41. /**
    + c9 y0 V$ b! V0 t, S7 z7 {8 l
  42.   * @brief  Main program.
    / M/ n# R9 G  o( a6 G' C
  43.   * @param  None.  a. H3 }  V1 {
  44.   * @return None.3 z3 b7 r  b5 R# F
  45.   */( [' ]: _$ Z$ m
  46. int main(void)6 j% A4 L- o" L3 s5 n& K9 ?9 ?
  47. {5 g6 H6 G7 v, J7 \- z# W
  48.   for(;;)# q3 Q/ V; Z+ |, [, j
  49.   {' R, g; S& y0 s( P
  50.     Delay_s(5);: v9 }, I# G0 q% L' x
  51.     BUZZ_SetStatus(BUZZ_Drip);
    % b# Y, r: s. W. j
  52.     Delay_s(5);9 X4 T9 O2 D) m$ W+ i8 g# [$ I& J
  53.     BUZZ_SetStatus(BUZZ_Ring);
      g* I% r# `1 E3 M
  54.     Delay_s(5);+ W$ W# _- ?4 l- ~2 O6 k, f
  55.     BUZZ_SetStatus(BUZZ_Warning);/ W% P6 W* H7 c/ m. y, B" a: w
  56.     Delay_s(5);8 Z& C* w& o. m' f& _9 p9 a6 y5 h
  57.     BUZZ_SetStatus(BUZZ_Danger);
    , I) g' U& A/ R$ B
  58.     Delay_s(5);
    # {4 h6 y$ K! ^0 v4 y& }, Z6 S3 r
  59.     BUZZ_SetStatus(BUZZ_Off);# M9 w& r0 x8 H
  60.   }
      G8 z! e2 f" d) V* Y/ u
  61. }  q; `9 O. I4 M3 l' _3 o. x# w
复制代码

9 X8 y# w0 g+ {  B# i2 B3，注意8 {3 u, N6 G# D* m
4 y& _9 {3 k& Z3 h2 A# l. \- s
       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。8 G. c/ u. D3 r0 H7 a: P; y
: Y% g: p  u5 t" l
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XinLiYF 回答时间：2018-3-10 11:02:35
刚刚通过审核，自己顶一下
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意法半导体微控制器和微处理器拥有广泛的产品线，包含低成本的8位单片机和基于ARM® Cortex®-M0、M0+、M3、M4、M33、M7及A7内核并具备丰富外设选择的32位微控制器及微处理器。关注该话题即可发布文章！

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