STM32F4(BUZZ)

GitHub仓库：http://github.com/XinLiGitHub/STM32F4xx_BUZZ_Example
PS：博文不再更新，后续更新会在GitHub仓库进行。

       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。


1，开发环境

     1，固件库：STM32F4xx_DSP_StdPeriph_Lib_V1.8.0
     2，编译器：ARMCC V5.06
     3，IDE：Keil uVision5
     4，操作系统：Windows 10 专业版

2，程序源码
      BUZZ.h文件

1. /**
   
2.   ******************************************************************************
   
3.   * @file    BUZZ.h
   
4.   * @author  XinLi
   
5.   * @version v1.0
   
6.   * @date    24-October-2017
   
7.   * @brief   Header file for BUZZ.c module.
   
8.   ******************************************************************************
   
9.   * @attention
   
10.   *
    
11.   * <h2><center>Copyright © 2017 XinLi</center></h2>
    
12.   *
    
13.   * This program is free software: you can redistribute it and/or modify
    
14.   * it under the terms of the GNU General Public License as published by
    
15.   * the Free Software Foundation, either version 3 of the License, or
    
16.   * (at your option) any later version.
    
17.   *
    
18.   * This program is distributed in the hope that it will be useful,
    
19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    
20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
21.   * GNU General Public License for more details.
    
22.   *
    
23.   * You should have received a copy of the GNU General Public License
    
24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
25.   *
    
26.   ******************************************************************************
    
27.   */
    
28. 
    
29. #ifndef __BUZZ_H
    
30. #define __BUZZ_H
    
31. 
    
32. #ifdef __cplusplus
    
33. extern "C" {
    
34. #endif
    
35. 
    
36. /* Header includes -----------------------------------------------------------*/
    
37. #include "stm32f4xx.h"
    
38. 
    
39. /* Macro definitions ---------------------------------------------------------*/
    
40. #define BUZZ_RCC_AHB1Periph_GPIO         RCC_AHB1Periph_GPIOB
    
41. #define BUZZ_GPIO                        GPIOB
    
42. #define BUZZ_GPIO_Pin                    GPIO_Pin_8
    
43. 
    
44. #define BUZZ_GPIO_PinSource              GPIO_PinSource8
    
45. #define BUZZ_GPIO_AF_TIM                 GPIO_AF_TIM4
    
46. 
    
47. #define BUZZ_RCC_APB1Periph_TIM          RCC_APB1Periph_TIM4
    
48. #define BUZZ_TIM                         TIM4
    
49. 
    
50. #define BUZZ_TIM_Prescaler               (83)  /*!< Clock divided to 1MHz. */
    
51. #define BUZZ_TIM_Period                  (249) /*!< 250us timer interrupt. */
    
52. 
    
53. #define BUZZ_TIM_OCPolarity              TIM_OCPolarity_High
    
54. 
    
55. #define BUZZ_TIM_OCInit                  TIM_OC3Init
    
56. #define BUZZ_TIM_OCPreloadConfig         TIM_OC3PreloadConfig
    
57. 
    
58. #define BUZZ_TIM_SetCompare              TIM_SetCompare3
    
59. 
    
60. #define BUZZ_TIM_IRQn                    TIM4_IRQn
    
61. #define BUZZ_TIM_IRQHandler              TIM4_IRQHandler
    
62. #define BUZZ_TIM_IRQ_PreemptionPriority  (0)
    
63. #define BUZZ_TIM_IRQ_SubPriority         (0)
    
64. 
    
65. /* Type definitions ----------------------------------------------------------*/
    
66. typedef enum
    
67. {
    
68.   BUZZ_Off     = 0,
    
69.   BUZZ_Ring    = 1,
    
70.   BUZZ_Drip    = 2,
    
71.   BUZZ_Warning = 3,
    
72.   BUZZ_Danger  = 4
    
73. }BUZZ_Status;
    
74. 
    
75. /* Variable declarations -----------------------------------------------------*/
    
76. /* Variable definitions ------------------------------------------------------*/
    
77. /* Function declarations -----------------------------------------------------*/
    
78. void BUZZ_SetStatus(BUZZ_Status status);
    
79. BUZZ_Status BUZZ_GetStatus(void);
    
80. 
    
81. /* Function definitions ------------------------------------------------------*/
    
82. 
    
83. #ifdef __cplusplus
    
84. }
    
85. #endif
    
86. 
    
87. #endif /* __BUZZ_H */
    

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      BUZZ.c文件

1. /**
   
2.   ******************************************************************************
   
3.   * @file    BUZZ.c
   
4.   * @author  XinLi
   
5.   * @version v1.0
   
6.   * @date    24-October-2017
   
7.   * @brief   BUZZ module driver.
   
8.   ******************************************************************************
   
9.   * @attention
   
10.   *
    
11.   * <h2><center>Copyright © 2017 XinLi</center></h2>
    
12.   *
    
13.   * This program is free software: you can redistribute it and/or modify
    
14.   * it under the terms of the GNU General Public License as published by
    
15.   * the Free Software Foundation, either version 3 of the License, or
    
16.   * (at your option) any later version.
    
17.   *
    
18.   * This program is distributed in the hope that it will be useful,
    
19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    
20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
21.   * GNU General Public License for more details.
    
22.   *
    
23.   * You should have received a copy of the GNU General Public License
    
24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
25.   *
    
26.   ******************************************************************************
    
27.   */
    
28. 
    
29. /* Header includes -----------------------------------------------------------*/
    
30. #include "BUZZ.h"
    
31. #include <stdbool.h>
    
32. 
    
33. /* Macro definitions ---------------------------------------------------------*/
    
34. /* Type definitions ----------------------------------------------------------*/
    
35. /* Variable declarations -----------------------------------------------------*/
    
36. /* Variable definitions ------------------------------------------------------*/
    
37. static __IO BUZZ_Status buzzStatus = BUZZ_Off;
    
38. static __IO int         buzzCount  = 0;
    
39. 
    
40. /* Function declarations -----------------------------------------------------*/
    
41. static void BUZZ_PwmInit(void);
    
42. static void BUZZ_NvicInit(void);
    
43. static void BUZZ_Init(void);
    
44. 
    
45. /* Function definitions ------------------------------------------------------*/
    
46. 
    
47. /**
    
48.   * @brief  Buzz pwm initializes.
    
49.   * @param  None.
    
50.   * @return None.
    
51.   */
    
52. static void BUZZ_PwmInit(void)
    
53. {
    
54.   GPIO_InitTypeDef        GPIO_InitStructure    = {0};
    
55.   TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure = {0};
    
56.   TIM_OCInitTypeDef       TIM_OCInitStructure   = {0};
    
57.   
    
58.   RCC_AHB1PeriphClockCmd(BUZZ_RCC_AHB1Periph_GPIO, ENABLE);
    
59.   RCC_APB1PeriphClockCmd(BUZZ_RCC_APB1Periph_TIM, ENABLE);
    
60.   
    
61.   GPIO_InitStructure.GPIO_Pin   = BUZZ_GPIO_Pin;
    
62.   GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF;
    
63.   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    
64.   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    
65.   GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;
    
66.   GPIO_Init(BUZZ_GPIO, &GPIO_InitStructure);
    
67.   
    
68.   GPIO_PinAFConfig(BUZZ_GPIO, BUZZ_GPIO_PinSource, BUZZ_GPIO_AF_TIM);
    
69.   
    
70.   TIM_TimeBaseStructure.TIM_Prescaler     = BUZZ_TIM_Prescaler;
    
71.   TIM_TimeBaseStructure.TIM_CounterMode   = TIM_CounterMode_Up;
    
72.   TIM_TimeBaseStructure.TIM_Period        = BUZZ_TIM_Period;
    
73.   TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    
74.   TIM_TimeBaseInit(BUZZ_TIM, &TIM_TimeBaseStructure);
    
75.   
    
76.   TIM_OCInitStructure.TIM_OCMode      = TIM_OCMode_PWM1;
    
77.   TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    
78.   TIM_OCInitStructure.TIM_Pulse       = 0;
    
79.   TIM_OCInitStructure.TIM_OCPolarity  = BUZZ_TIM_OCPolarity;
    
80.   BUZZ_TIM_OCInit(BUZZ_TIM, &TIM_OCInitStructure);
    
81.   
    
82.   BUZZ_TIM_OCPreloadConfig(BUZZ_TIM, TIM_OCPreload_Enable);
    
83.   TIM_ARRPreloadConfig(BUZZ_TIM, ENABLE);
    
84.   TIM_ITConfig(BUZZ_TIM, TIM_IT_Update, ENABLE);
    
85.   TIM_Cmd(BUZZ_TIM, ENABLE);
    
86. }
    
87. 
    
88. /**
    
89.   * @brief  Buzz nvic initializes.
    
90.   * @param  None.
    
91.   * @return None.
    
92.   */
    
93. static void BUZZ_NvicInit(void)
    
94. {
    
95.   NVIC_InitTypeDef NVIC_InitStructure = {0};
    
96.   
    
97.   NVIC_InitStructure.NVIC_IRQChannel                   = BUZZ_TIM_IRQn;
    
98.   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = BUZZ_TIM_IRQ_PreemptionPriority;
    
99.   NVIC_InitStructure.NVIC_IRQChannelSubPriority        = BUZZ_TIM_IRQ_SubPriority;
    
100.   NVIC_InitStructure.NVIC_IRQChannelCmd                = ENABLE;
     
101.   NVIC_Init(&NVIC_InitStructure);
     
102. }
     
103. 
     
104. /**
     
105.   * @brief  Buzz initializes.
     
106.   * @param  None.
     
107.   * @return None.
     
108.   */
     
109. static void BUZZ_Init(void)
     
110. {
     
111.   static bool init_flag = false;
     
112.   
     
113.   if(init_flag == false)
     
114.   {
     
115.     init_flag = true;
     
116.    
     
117.     BUZZ_PwmInit();
     
118.     BUZZ_NvicInit();
     
119.   }
     
120. }
     
121. 
     
122. /**
     
123.   * @brief  Set buzz status.
     
124.   * @param  [in] status: Buzz status.
     
125.   * @return None.
     
126.   */
     
127. void BUZZ_SetStatus(BUZZ_Status status)
     
128. {
     
129.   if(status != buzzStatus)
     
130.   {
     
131.     buzzStatus = status;
     
132.     buzzCount  = 0;
     
133.     BUZZ_Init();
     
134.   }
     
135. }
     
136. 
     
137. /**
     
138.   * @brief  Get buzz status.
     
139.   * @param  None.
     
140.   * @return Buzz status.
     
141.   */
     
142. BUZZ_Status BUZZ_GetStatus(void)
     
143. {
     
144.   return buzzStatus;
     
145. }
     
146. 
     
147. /**
     
148.   * @brief  This function handles TIM Handler.
     
149.   * @param  None.
     
150.   * @return None.
     
151.   */
     
152. void BUZZ_TIM_IRQHandler(void)
     
153. {
     
154.   if(TIM_GetITStatus(BUZZ_TIM, TIM_IT_Update) != RESET)
     
155.   {
     
156.     TIM_ClearITPendingBit(BUZZ_TIM, TIM_IT_Update);
     
157.    
     
158.     if(buzzStatus == BUZZ_Off)
     
159.     {
     
160.       buzzCount = 0;
     
161.       BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
     
162.     }
     
163.     else if(buzzStatus == BUZZ_Ring)
     
164.     {
     
165.       buzzCount = 0;
     
166.       BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
     
167.     }
     
168.     else if(buzzStatus == BUZZ_Drip)
     
169.     {
     
170.       if(buzzCount > 1999)
     
171.       {
     
172.         if(buzzCount > 3999)
     
173.         {
     
174.           buzzCount  = 0;
     
175.           buzzStatus = BUZZ_Off;
     
176.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
     
177.         }
     
178.         else
     
179.         {
     
180.           buzzCount++;
     
181.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
     
182.         }
     
183.       }
     
184.       else
     
185.       {
     
186.         buzzCount++;
     
187.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
     
188.       }
     
189.     }
     
190.     else if(buzzStatus == BUZZ_Warning)
     
191.     {
     
192.       if(buzzCount > 1999)
     
193.       {
     
194.         if(buzzCount > 3999)
     
195.         {
     
196.           buzzCount = 0;
     
197.           BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
     
198.         }
     
199.         else
     
200.         {
     
201.           buzzCount++;
     
202.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
     
203.         }
     
204.       }
     
205.       else
     
206.       {
     
207.         buzzCount++;
     
208.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
     
209.       }
     
210.     }
     
211.     else
     
212.     {
     
213.       if(buzzCount > 999)
     
214.       {
     
215.         if(buzzCount > 1999)
     
216.         {
     
217.           buzzCount = 0;
     
218.           BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
     
219.         }
     
220.         else
     
221.         {
     
222.           buzzCount++;
     
223.           BUZZ_TIM_SetCompare(BUZZ_TIM, 0);
     
224.         }
     
225.       }
     
226.       else
     
227.       {
     
228.         buzzCount++;
     
229.         BUZZ_TIM_SetCompare(BUZZ_TIM, (BUZZ_TIM_Period + 1) / 2);
     
230.       }
     
231.     }
     
232.   }
     
233. }
     

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      main.c文件

1. /**
   
2.   ******************************************************************************
   
3.   * @file    main.c
   
4.   * @author  XinLi
   
5.   * @version v1.0
   
6.   * @date    24-October-2017
   
7.   * @brief   Main program body.
   
8.   ******************************************************************************
   
9.   * @attention
   
10.   *
    
11.   * <h2><center>Copyright © 2017 XinLi</center></h2>
    
12.   *
    
13.   * This program is free software: you can redistribute it and/or modify
    
14.   * it under the terms of the GNU General Public License as published by
    
15.   * the Free Software Foundation, either version 3 of the License, or
    
16.   * (at your option) any later version.
    
17.   *
    
18.   * This program is distributed in the hope that it will be useful,
    
19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    
20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
21.   * GNU General Public License for more details.
    
22.   *
    
23.   * You should have received a copy of the GNU General Public License
    
24.   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
25.   *
    
26.   ******************************************************************************
    
27.   */
    
28. 
    
29. /* Header includes -----------------------------------------------------------*/
    
30. #include "main.h"
    
31. #include "Delay.h"
    
32. #include "BUZZ.h"
    
33. 
    
34. /* Macro definitions ---------------------------------------------------------*/
    
35. /* Type definitions ----------------------------------------------------------*/
    
36. /* Variable declarations -----------------------------------------------------*/
    
37. /* Variable definitions ------------------------------------------------------*/
    
38. /* Function declarations -----------------------------------------------------*/
    
39. /* Function definitions ------------------------------------------------------*/
    
40. 
    
41. /**
    
42.   * @brief  Main program.
    
43.   * @param  None.
    
44.   * @return None.
    
45.   */
    
46. int main(void)
    
47. {
    
48.   for(;;)
    
49.   {
    
50.     Delay_s(5);
    
51.     BUZZ_SetStatus(BUZZ_Drip);
    
52.     Delay_s(5);
    
53.     BUZZ_SetStatus(BUZZ_Ring);
    
54.     Delay_s(5);
    
55.     BUZZ_SetStatus(BUZZ_Warning);
    
56.     Delay_s(5);
    
57.     BUZZ_SetStatus(BUZZ_Danger);
    
58.     Delay_s(5);
    
59.     BUZZ_SetStatus(BUZZ_Off);
    
60.   }
    
61. }
    

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3，注意

       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。

刚刚通过审核，自己顶一下