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STM32F4 C++ 封装库 之 EXTI
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       这几天看了下 mbed 的源码，给上层应用调用的接口封装的还是不错的。代码质量比较高，注释也很详细，文档和例程比较全。但是驱动层的程序全是 C 语言编写的，代码质量就没有那么高了，注释比较少而且不规范，比较怀疑 mbed 的稳定性。mbed 的实时内核是用的 RTX5 ，文件系统用的 FatFs ，还有一些开源的协议栈，整套系统比较繁杂。mbed 框架是为物联网设备开发的，工业控制级别的产品可以考虑用 RTE 框架。RTE 框架目前驱动层程序还不太完善，有好多需要自己去实现，可能在过一段时间会好一些吧。总之物联网产品可以用 mbed ，工业控制产品可以用 RTE 。这几天封装了 EXTI ，距离整套系统可以产生生产力还有很长的距离要走，我也不知道整个系统会成什么样子，我能坚持多久，不管了先做再说。在这里分享我的 STM32F4 C++ 封装之旅。今天分享《STM32F4 C++ 封装库 之 EXTI》，直接上代码了~

+ y  @9 q/ L- ]2 Rstm32f4xx_xexti.h 文件

1. /**
   2 J" H/ s$ H5 n  N' L8 d. _
2.   ******************************************************************************
   ) C' v4 y* z6 k
3.   * \file    stm32f4xx_xexti.h
   : ?- F8 b6 _5 e
4.   * \author  XinLi
   $ a" D* l. }# w/ Z- n  A
5.   * \version v1.0
   1 V: m, C$ H! F8 q9 e5 ]* s4 z
6.   * \date    20-March-2018
   
7.   * \brief   Header file for external interrupt/event controller module.
   
8.   ******************************************************************************
     h* ^5 k' J) ]) D
9.   * \attention
   
10.   *
    
11.   * <h2><center>Copyright © 2018 XinLi</center></h2>
    
12.   *
    9 m% G# x) ]' n; {( [% s5 N* d
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
    5 Y1 O7 O* F& v9 V: g) q  p
15.   * the Free Software Foundation, either version 3 of the License, or
    
16.   * (at your option) any later version.
    ! A( U2 @/ Q4 G! S
17.   *
    % t- S& p# P. N7 I" h9 `) A2 n8 D' v
18.   * This program is distributed in the hope that it will be useful,
    
19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    - ?0 |7 T' s* x' z( [. `0 @3 J
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/>.
    8 g  z5 c1 @8 j+ t9 @. C
25.   *
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26.   ******************************************************************************
    
27.   */
    
28. 
    
29. #ifndef STM32F4XX_XEXTI_H
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30. #define STM32F4XX_XEXTI_H
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31. 
    
32. #include "stm32f4xx_ll_exti.h"
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33. 
    
34. /*! External interrupt/event controller module. */
    
35. class XExti
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36. {
    
37. public:
    , z. ]( y/ ~  }# a
38.   /*! Enumerate of EXTI lines. */
    
39.   enum ExtiLine
    
40.   {
    
41.     Line0  = LL_EXTI_LINE_0,  /*!< EXTI line 0. */
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42.     Line1  = LL_EXTI_LINE_1,  /*!< EXTI line 1. */
      H1 H0 ]% e: n4 d
43.     Line2  = LL_EXTI_LINE_2,  /*!< EXTI line 2. */
    
44.     Line3  = LL_EXTI_LINE_3,  /*!< EXTI line 3. */
    
45.     Line4  = LL_EXTI_LINE_4,  /*!< EXTI line 4. */
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46.     Line5  = LL_EXTI_LINE_5,  /*!< EXTI line 5. */
    
47.     Line6  = LL_EXTI_LINE_6,  /*!< EXTI line 6. */
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48.     Line7  = LL_EXTI_LINE_7,  /*!< EXTI line 7. */
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49.     Line8  = LL_EXTI_LINE_8,  /*!< EXTI line 8. */
    
50.     Line9  = LL_EXTI_LINE_9,  /*!< EXTI line 9. */
    4 v) M( \: u! j
51.     Line10 = LL_EXTI_LINE_10, /*!< EXTI line 10. */
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52.     Line11 = LL_EXTI_LINE_11, /*!< EXTI line 11. */
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53.     Line12 = LL_EXTI_LINE_12, /*!< EXTI line 12. */
    
54.     Line13 = LL_EXTI_LINE_13, /*!< EXTI line 13. */
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55.     Line14 = LL_EXTI_LINE_14, /*!< EXTI line 14. */
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56.     Line15 = LL_EXTI_LINE_15, /*!< EXTI line 15. */
    
57.   #ifdef LL_EXTI_LINE_16
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58.     Line16 = LL_EXTI_LINE_16, /*!< EXTI line 16. */
    
59.   #endif
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60.   #ifdef LL_EXTI_LINE_17
    
61.     Line17 = LL_EXTI_LINE_17, /*!< EXTI line 17. */
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62.   #endif
    
63.   #ifdef LL_EXTI_LINE_18
    
64.     Line18 = LL_EXTI_LINE_18, /*!< EXTI line 18. */
    3 _, R( X& ]5 \' F
65.   #endif
    
66.   #ifdef LL_EXTI_LINE_19
    
67.     Line19 = LL_EXTI_LINE_19, /*!< EXTI line 19. */
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68.   #endif
    
69.   #ifdef LL_EXTI_LINE_20
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70.     Line20 = LL_EXTI_LINE_20, /*!< EXTI line 20. */
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71.   #endif
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72.   #ifdef LL_EXTI_LINE_21
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73.     Line21 = LL_EXTI_LINE_21, /*!< EXTI line 21. */
    
74.   #endif
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75.   #ifdef LL_EXTI_LINE_22
    
76.     Line22 = LL_EXTI_LINE_22, /*!< EXTI line 22. */
    
77.   #endif
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78.   #ifdef LL_EXTI_LINE_23
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79.     Line23 = LL_EXTI_LINE_23, /*!< EXTI line 23. */
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80.   #endif
    
81.   #ifdef LL_EXTI_LINE_24
    
82.     Line24 = LL_EXTI_LINE_24, /*!< EXTI line 24. */
    
83.   #endif
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84.   #ifdef LL_EXTI_LINE_25
    
85.     Line25 = LL_EXTI_LINE_25, /*!< EXTI line 25. */
    
86.   #endif
    
87.   #ifdef LL_EXTI_LINE_26
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88.     Line26 = LL_EXTI_LINE_26, /*!< EXTI line 26. */
    
89.   #endif
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90.   #ifdef LL_EXTI_LINE_27
    # h2 y1 }* t- J
91.     Line27 = LL_EXTI_LINE_27, /*!< EXTI line 27. */
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92.   #endif
    
93.   #ifdef LL_EXTI_LINE_28
    
94.     Line28 = LL_EXTI_LINE_28, /*!< EXTI line 28. */
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95.   #endif
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96.   #ifdef LL_EXTI_LINE_29
    
97.     Line29 = LL_EXTI_LINE_29, /*!< EXTI line 29. */
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98.   #endif
    
99.   #ifdef LL_EXTI_LINE_30
    
100.     Line30 = LL_EXTI_LINE_30, /*!< EXTI line 30. */
     
101.   #endif
     
102.   #ifdef LL_EXTI_LINE_31
     
103.     Line31 = LL_EXTI_LINE_31, /*!< EXTI line 31. */
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104.   #endif
     
105.   };
     
106.   
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107.   /*! Enumerate of EXTI modes. */
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108.   enum ExtiMode
     / \" }# j/ ~) Y9 u2 O
109.   {
     
110.     ModeInterrupt      = LL_EXTI_MODE_IT,       /*!< EXTI interrupt mode. */
     
111.     ModeEvent          = LL_EXTI_MODE_EVENT,    /*!< EXTI event mode. */
     * ]* E6 K2 d/ x7 O+ {. @
112.     ModeInterruptEvent = LL_EXTI_MODE_IT_EVENT, /*!< EXTI interrupt and event mode. */
     
113.   };
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114.   
     
115.   /*! Enumerate of EXTI triggers. */
     
116.   enum ExtiTrigger
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117.   {
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118.     TriggerNone          = LL_EXTI_TRIGGER_NONE,           /*!< EXTI none trigger. */
     
119.     TriggerRising        = LL_EXTI_TRIGGER_RISING,         /*!< EXTI rising trigger. */
     
120.     TriggerFalling       = LL_EXTI_TRIGGER_FALLING,        /*!< EXTI falling trigger. */
     
121.     TriggerRisingFalling = LL_EXTI_TRIGGER_RISING_FALLING, /*!< EXTI rising and falling trigger. */
     
122.   };
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123.   
     
124.   XExti(ExtiLine line, ExtiMode mode, ExtiTrigger trigger = TriggerNone);
     
125.   virtual ~XExti();
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126.   
     
127.   void setLine(ExtiLine line);
     
128.   ExtiLine getLine() const;
     
129.   
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130.   void setMode(ExtiMode mode);
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131.   ExtiMode getMode() const;
     
132.   
     
133.   void setTrigger(ExtiTrigger trigger);
     
134.   ExtiTrigger getTrigger() const;
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135.   
     
136.   void setFlag();
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137.   void clearFlag();
     
138.   
     
139.   bool isFlagSet() const;
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140.   
     
141.   bool open();
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142.   void close();
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143.   
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144.   bool isOpen() const;
     
145.   
     
146. private:
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147.   ExtiLine    line;
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148.   ExtiMode    mode;
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149.   ExtiTrigger trigger;
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150.   bool        openFlag;
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151.   
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152.   XExti(const XExti &) = delete;
     
153.   XExti & operator = (const XExti &) = delete;
     1 A8 ]! Q8 b5 M2 ^
154. };
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155. 
     - I( @; O% @5 M" Z  r
156. #endif // STM32F4XX_XEXTI_H
     

复制代码

stm32f4xx_xexti.cpp 文件
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1. /**
   
2.   ******************************************************************************
   
3.   * \file    stm32f4xx_xexti.cpp
   
4.   * \author  XinLi
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5.   * \version v1.0
   / y7 S) M! H% }, ?' M
6.   * \date    20-March-2018
   
7.   * \brief   External interrupt/event controller module driver.
   $ k! X* d* v; P  r- Q# @1 X8 P
8.   ******************************************************************************
   * T) M; m8 T2 W- A6 _
9.   * \attention
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10.   *
    2 v2 e" l' L, d6 _
11.   * <h2><center>Copyright © 2018 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
    7 D  L6 b; F8 L  ?. C
16.   * (at your option) any later version.
    & P2 b0 n4 E, K3 ]+ _5 |/ H; x" [
17.   *
    
18.   * This program is distributed in the hope that it will be useful,
    , H3 V6 `" g. z% n2 |2 x4 X( b! C- o) W  o
19.   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    ) ~& {0 [1 j* T) z8 m7 e% U
20.   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    
21.   * GNU General Public License for more details.
    . k+ h% r3 m  \) Q# {, W; J+ c5 G
22.   *
    * y9 _; ^0 `1 m% P( ]/ p8 B
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/>.
    ' f; ?* @) Z: ~6 Z6 n
25.   *
    
26.   ******************************************************************************
    
27.   */
    
28. 
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29. #include "stm32f4xx_xexti.h"
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30. 
    
31. static __IO uint32_t extiOpenFlag = 0;
    
32. 
    % ~; l1 Q" y. ^
33. /*!
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34.    \brief Set external interrupt/event line flags.
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35.    \param line: EXTI line.
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36. */
    
37. static void SetExtiLineFlag(XExti::ExtiLine line)
    : i* ^2 d8 @6 C% c
38. {
    6 J3 ?3 W5 O8 H) I6 [
39.   extiOpenFlag |= line;
    
40. }
    8 {$ }; E- X/ `3 m6 x
41. 
    
42. /*!
    2 U+ l0 T) Q8 U1 z
43.    \brief Clear external interrupt/event line flags.
    ' i  [  R$ [# U$ p7 J# _* y$ U
44.    \param line: EXTI line.
    " J1 \& Z# B) V: @
45. */
    
46. static void ClearExtiLineFlag(XExti::ExtiLine line)
    8 d' X( z1 F8 H* i5 j7 S
47. {
    
48.   extiOpenFlag &= ~line;
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49. }
    
50. 
    
51. /*!
    & j0 O9 w/ A5 g. @2 c
52.    \brief  Is an external interrupt/event line flag set?
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53.    \param  line:  EXTI line.
    
54.    \retval true:  External interrupt/event line flag is set.
      q. o) H$ ?% J# }: f  H
55.    \retval false: External interrupt/event line flag is not set.
    
56. */
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57. static bool IsExtiLineFlagSet(XExti::ExtiLine line)
    
58. {
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59.   return ((extiOpenFlag & line) == line);
    
60. }
    
61. 
    
62. /*!
    
63.    \brief External interrupt/event controller module constructor.
    
64.    \param line:    EXTI line.
    
65.    \param mode:    EXTI mode.
    9 d7 g6 o8 G% b2 y2 V( q$ u
66.    \param trigger: EXTI trigger.
    
67. */
    
68. XExti::XExti(ExtiLine line, ExtiMode mode, ExtiTrigger trigger)
    ' J4 o. R; q* h! E4 q+ W5 g
69. {
    
70.   this->line     = line;
    # a, l0 N/ p1 h; n  z
71.   this->mode     = mode;
    : D  \- @4 s+ D" n+ ]
72.   this->trigger  = trigger;
    $ ^( F2 ?, H: D8 @7 N# ^
73.   this->openFlag = false;
    
74. }
    
75. 
    
76. /*!
    
77.    \brief   External interrupt/event controller module destructor.
    
78.    \details Restores the external interrupt/event controller to its default state.
    
79. */
    
80. XExti::~XExti()
    & [0 ^& ?# V5 g9 R
81. {
    7 e# v0 _* q2 ?+ F: U: P
82.   close();
    
83. }
    
84. 
    ! i3 H9 I+ \# z% `
85. /*!
    : _# N+ ?4 Q7 U1 M$ ^
86.    \brief Set external interrupt/event line.
    
87.    \param line: EXTI line.
    
88. */
    3 D6 W$ y- G  m! _9 z0 _4 {5 d
89. void XExti::setLine(ExtiLine line)
    
90. {
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91.   if(openFlag != true)
    
92.   {
    2 T$ H  A3 o* H: R9 ~) R
93.     this->line = line;
    ! ?! M4 I, @+ l. x# k
94.   }
    
95. }
    , q, [, H4 T: w
96. 
    
97. /*!
    
98.    \brief  Get external interrupt/event line.
    
99.    \return EXTI line.
    
100. */
     0 v! h# I! R1 o( ~; J) x1 m
101. XExti::ExtiLine XExti::getLine() const
     1 U9 B) d; D7 L; h3 {0 X
102. {
     0 h2 ~  u9 _# t, P; y7 V  n
103.   return line;
     
104. }
     8 u# R4 U; P& l1 i' d: F
105. 
     
106. /*!
     
107.    \brief Set external interrupt/event mode.
     
108.    \param mode: EXTI mode.
     
109. */
     " X/ E- l$ j% d; K1 ~7 x4 d
110. void XExti::setMode(ExtiMode mode)
     
111. {
     ! n- f3 u- w* g- R( h+ H0 B5 D
112.   this->mode = mode;
     
113.   
     * p/ W/ q$ B" w$ [
114.   if(openFlag == true)
     
115.   {
     6 ~# h4 @3 ]! q* [# i. ~6 H
116.     if(mode == ModeInterrupt)
     ) u- m4 ^* k9 e$ G
117.     {
     
118.       LL_EXTI_DisableEvent_0_31(line);
     $ d5 l$ M) R& ]" u
119.       LL_EXTI_EnableIT_0_31(line);
     
120.     }
     . o6 w2 {7 b( n! g2 L
121.     else if(mode == ModeEvent)
     
122.     {
     3 A& q- j1 L5 ]) w" e
123.       LL_EXTI_DisableIT_0_31(line);
     : R* t  x$ D+ U0 g
124.       LL_EXTI_EnableEvent_0_31(line);
     
125.     }
     
126.     else
       h- a& X* {4 }
127.     {
     4 G. `. o: H( T$ p
128.       LL_EXTI_EnableIT_0_31(line);
     7 ~+ g& e+ _# X8 a
129.       LL_EXTI_EnableEvent_0_31(line);
     
130.     }
     
131.   }
     
132. }
     
133. 
     : C$ I1 N1 |" e! n
134. /*!
     
135.    \brief  Get external interrupt/event mode.
     
136.    \return EXTI mode.
     
137. */
     % o) y+ ?0 l, H; x
138. XExti::ExtiMode XExti::getMode() const
     
139. {
     3 {. c" K5 u" X4 C) s; m
140.   return mode;
       Z( `  [9 \, F# y5 ^
141. }
     $ G( q  [# N4 N  l& ^/ h( l" j
142. 
     ( o, u" [% c; a& M4 }! X0 p
143. /*!
     
144.    \brief Set external interrupt/event trigger.
     
145.    \param trigger: EXTI trigger.
     & j0 u9 V& G$ V% [2 n( b
146. */
     
147. void XExti::setTrigger(ExtiTrigger trigger)
     & A+ u; G+ d+ ~( ^  V8 E
148. {
     - Q; a# E" @4 \& D2 R
149.   this->trigger = trigger;
     
150.   
     
151.   if(openFlag == true)
     " h8 n$ n' }5 y& u7 X& N. G2 \/ z  z
152.   {
     
153.     if(trigger == TriggerNone)
       \& U/ W8 V# D7 j5 ?( ~/ m
154.     {
     $ n  l" D/ ^$ Q4 p
155.       LL_EXTI_DisableRisingTrig_0_31(line);
     
156.       LL_EXTI_DisableFallingTrig_0_31(line);
     $ Y: R0 \: t& V" ]3 `
157.     }
     1 i( j  ~4 C+ O# _; P- }
158.     else if(trigger == TriggerRising)
     
159.     {
     9 r8 o, X9 Y/ e5 b& F9 p
160.       LL_EXTI_DisableFallingTrig_0_31(line);
     ' l( m9 r1 J  r! m
161.       LL_EXTI_EnableRisingTrig_0_31(line);
     : c1 |& y: L; l
162.     }
     
163.     else if(trigger == TriggerFalling)
     3 ]: ^* v" P5 _1 h8 k
164.     {
     
165.       LL_EXTI_DisableRisingTrig_0_31(line);
     
166.       LL_EXTI_EnableFallingTrig_0_31(line);
     - D. f* m6 y. i, y3 S* M
167.     }
     
168.     else
     
169.     {
     
170.       LL_EXTI_EnableRisingTrig_0_31(line);
     & c( p2 k% j8 x9 @0 B/ m
171.       LL_EXTI_EnableFallingTrig_0_31(line);
     
172.     }
     % a/ L  Q. _8 |' S. Q" ?) y; V
173.   }
     ) [: T: J. r6 r* d5 ^0 Z
174. }
     8 x; L( ~( b- ~; ~( L1 o1 u
175. 
     ' Q! D9 a3 y) N: s' X$ `
176. /*!
     
177.    \brief  Get external interrupt/event trigger.
     
178.    \return EXTI trigger.
     
179. */
     , C) i$ q, ~" a7 ?) ^# F
180. XExti::ExtiTrigger XExti::getTrigger() const
     
181. {
     6 y$ {$ o' p& g9 j/ J
182.   return trigger;
     
183. }
     ; b- q2 A- S+ k( j
184. 
     : |( C4 G9 n! V& ]9 V
185. /*!
     
186.    \brief Set external interrupt/event flags.
     
187. */
     
188. void XExti::setFlag()
     6 X- Y* P& i2 C
189. {
     . ^" d6 W+ E% e: b
190.   if(openFlag == true)
     
191.   {
     
192.     LL_EXTI_GenerateSWI_0_31(line);
     9 {8 A: ~& O# a
193.   }
     
194. }
     
195. 
     
196. /*!
     
197.    \brief Clear external interrupt/event flags.
     
198. */
     
199. void XExti::clearFlag()
     . y8 ]( l9 a1 T5 T
200. {
     
201.   if(openFlag == true)
     
202.   {
       P) W( z9 k4 k8 e
203.     LL_EXTI_ClearFlag_0_31(line);
     
204.   }
     
205. }
     ( s! N+ ?7 U# G" I
206. 
     : T; V- t4 r4 X
207. /*!
     
208.    \brief  Is an external interrupt/event flag set?
     " V. ^" Q" b8 Y4 W- a
209.    \retval true:  External interrupt/event flag is set.
     3 m5 g( G8 v' T
210.    \retval false: External interrupt/event flag is not set.
     
211. */
     2 i$ _+ f( e1 f+ @
212. bool XExti::isFlagSet() const
     
213. {
     
214.   if(openFlag == true)
     * y0 [# R( r0 U
215.   {
     
216.     return LL_EXTI_IsActiveFlag_0_31(line);
     
217.   }
     : ]( e- s7 p- \7 @
218.   else
     . r0 M% I- A2 t0 f' D# [/ L
219.   {
     , i2 l4 ~- l5 r' b' V
220.     return false;
     
221.   }
     1 l+ e$ Q; ~: t: m
222. }
     
223. 
     8 X* `: c3 l% j5 s/ m! |1 H
224. /*!
     , h, Y: n/ E6 y" z4 A
225.    \brief  Open external interrupt/event line.
     
226.    \retval true:  External interrupt/event line open success.
     % F5 U7 i+ Y; J
227.    \retval false: External interrupt/event line open failure.
     
228. */
     2 T: O* y: N* J
229. bool XExti::open()
     
230. {
     ) q6 r" h. [% X6 _( X6 W
231.   if(IsExtiLineFlagSet(line) != true)
     
232.   {
     
233.     if(mode == ModeInterrupt)
     ( v/ q1 y" t. L' g7 u
234.     {
     
235.       LL_EXTI_DisableEvent_0_31(line);
     : e/ D, {: D, Q3 ^
236.       LL_EXTI_EnableIT_0_31(line);
     5 A' M/ }1 `; ~4 R8 ^' [, [5 X3 ~1 Z
237.     }
     
238.     else if(mode == ModeEvent)
     
239.     {
     
240.       LL_EXTI_DisableIT_0_31(line);
     
241.       LL_EXTI_EnableEvent_0_31(line);
     
242.     }
     9 ~% f' H9 X0 C
243.     else
     
244.     {
     ; {5 p6 ^  i% }0 c  l
245.       LL_EXTI_EnableIT_0_31(line);
     
246.       LL_EXTI_EnableEvent_0_31(line);
     ' _3 f1 `6 S3 }" [
247.     }
     * i5 c8 }, X( M  V
248.    
     
249.     if(trigger == TriggerNone)
     $ V3 n( S- y/ v
250.     {
     
251.       LL_EXTI_DisableRisingTrig_0_31(line);
     $ c) S) D' G6 f# X: f! ^6 y
252.       LL_EXTI_DisableFallingTrig_0_31(line);
     
253.     }
     
254.     else if(trigger == TriggerRising)
     " E6 O" I& j5 J3 R3 O. R: P
255.     {
     
256.       LL_EXTI_DisableFallingTrig_0_31(line);
     
257.       LL_EXTI_EnableRisingTrig_0_31(line);
     
258.     }
     ! u* ?, x0 |" g! {/ e; V, m  L
259.     else if(trigger == TriggerFalling)
     5 l4 ^2 Q8 S( K, Z* d: l$ h4 V; }
260.     {
     
261.       LL_EXTI_DisableRisingTrig_0_31(line);
     ; K! o. L- M/ y1 ]6 G) M
262.       LL_EXTI_EnableFallingTrig_0_31(line);
     
263.     }
     2 M: L" W8 ]3 o
264.     else
     
265.     {
     
266.       LL_EXTI_EnableRisingTrig_0_31(line);
     : ]9 I& P  _- S% y8 _' \
267.       LL_EXTI_EnableFallingTrig_0_31(line);
     , P4 }6 J$ i$ a5 Y/ k( t% _# T
268.     }
     5 v7 O& c5 I5 E! b6 V: `
269.    
     
270.     SetExtiLineFlag(line);
     + b& s- a0 e' W; H3 u
271.    
     
272.     openFlag = true;
     
273.    
     
274.     return true;
     
275.   }
     8 W  g* ^5 w( a
276.   else
     
277.   {
     : Q  L3 v9 |+ t
278.     return false;
     
279.   }
     
280. }
     
281. 
     
282. /*!
     
283.    \brief   Close external interrupt/event line.
     
284.    \details Restores the external interrupt/event controller to its default state.
     
285. */
     , P! }. ]' g" C: k( ]( D
286. void XExti::close()
     + G1 X* f8 G/ h3 m6 |
287. {
     : ?% G1 y  g) H# {: _% y" T
288.   if(openFlag == true)
       g1 P3 d5 Z3 K$ A3 k- G$ v
289.   {
     8 q3 W! C+ N' Z! A; o) o( z4 B
290.     LL_EXTI_DisableIT_0_31(line);
     , i' B6 n9 p2 r0 G" l" h4 L( j
291.     LL_EXTI_DisableEvent_0_31(line);
     3 x2 O, ^, X3 r1 m, ^& c
292.     LL_EXTI_DisableRisingTrig_0_31(line);
     
293.     LL_EXTI_DisableFallingTrig_0_31(line);
     
294.     LL_EXTI_ClearFlag_0_31(line);
     
295.    
     . G* X) Q" L4 C" q
296.     ClearExtiLineFlag(line);
     
297.    
     6 y* J4 V4 G6 x9 ]2 X
298.     openFlag = false;
     1 b6 K" j& B& w  m
299.   }
     4 u: o. C# I* V' V5 s
300. }
     
301. 
     
302. /*!
     
303.    \brief  Is the external interrupt/event line open?
     0 K2 v7 Z% g# T9 |
304.    \retval true:  External interrupt/event line is open.
     7 R6 N  v! M' H3 b
305.    \retval false: External interrupt/event line is not open.
     7 C1 r: U, J- R
306. */
     
307. bool XExti::isOpen() const
     
308. {
       J2 `& J: j0 U4 |' P; u0 T# X
309.   return openFlag;
     
310. }
     - S# M/ h2 z+ }  L

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0 a. ?. ]4 R- }例程

1. /**
   ( t0 w7 |# A0 W) }7 i+ O% T
2.   ******************************************************************************
   
3.   * @file    main.cpp
   4 P" E6 |/ |( K
4.   * @author  XinLi
   ' {6 H0 v, y( P
5.   * @version v1.0
   
6.   * @date    20-March-2018
   
7.   * @brief   Main program body.
   ' b6 g8 G8 }$ l- f/ j" _
8.   ******************************************************************************
   
9.   * @attention
   
10.   *
    
11.   * <h2><center>Copyright © 2018 XinLi</center></h2>
    
12.   *
    / A( X- k- v; J% [- L* f
13.   * This program is free software: you can redistribute it and/or modify
    5 ]  @% A; N4 \% R7 o
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.   *
    # s. [5 ]4 w) k6 P9 O
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.
    7 U* b) |( S- C" H. c
22.   *
    ; w! J1 A' M4 I( @- r0 z" }$ Z
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/>.
    - U2 D" ]5 M8 R! w3 X# y, n, j
25.   *
    + N* C7 B* i4 A* g6 ?- p/ o
26.   ******************************************************************************
    
27.   */
      E' f, j# q$ y5 D; @) h
28. 
    # W1 q8 ]2 X0 |: c- `
29. /* Header includes -----------------------------------------------------------*/
    
30. #include "main.h"
    $ y7 v5 Q1 |5 c( @
31. #include "stm32f4xx_xgpio.h"
    8 o/ K" V2 k. E* i( x. O. Q% h
32. #include "stm32f4xx_xexti.h"
    . w/ q, x  o# j+ ]$ T) a, I
33. 
    / ], h2 Z9 ^7 s) C) }
34. /* Macro definitions ---------------------------------------------------------*/
    
35. /* Type definitions ----------------------------------------------------------*/
    . z, I& W' u  r! e0 i
36. /* Variable declarations -----------------------------------------------------*/
    ! U0 R2 H( s+ [/ {; Z3 k0 ^
37. /* Variable definitions ------------------------------------------------------*/
    / g+ x7 g1 ~: C+ y
38. /* Function declarations -----------------------------------------------------*/
    
39. static void SystemClock_Config(void);
    
40. 
    # ~8 S1 z- a( U- r* `
41. /* Function definitions ------------------------------------------------------*/
    
42. 
    ; V3 M! N% }# W' U5 I  K
43. /**
    ( w1 u% ?* f- T! C3 t, b
44.   * @brief  Main program.
    9 y: T/ d( G) ~& a6 |
45.   * @param  None.
    / i/ H; b8 j- s8 p# E  T; x  e
46.   * @return None.
    " H$ I  ~1 }: i  Y2 L
47.   */
    
48. int main(void)
    
49. {
    + n" U' n" l% i7 z( @1 O" f6 x- n
50.   /* STM32F4xx HAL library initialization:
    
51.        - Configure the Flash prefetch, instruction and Data caches
    
52.        - Configure the Systick to generate an interrupt each 1 msec
    $ l1 E! K/ v4 g
53.        - Set NVIC Group Priority to 4
    : M. m9 `5 F! v, f3 A$ a) x4 E' R
54.        - Global MSP (MCU Support Package) initialization
    % v! F& s% W) \( {1 ^* H9 f' P
55.      */
    
56.   HAL_Init();
    
57.   
    
58.   /* Configure the system clock to 168 MHz */
    
59.   SystemClock_Config();
    
60.   
    5 G" j+ ?/ X) J, W
61.   XExti exti4(XExti::Line4, XExti::ModeInterrupt);
    & |& U8 @1 f( y$ b9 O7 @, C
62.   
    
63.   exti4.open();
    ) ?+ r5 |' L; F+ Z
64.   
    4 {9 s; m3 D3 D7 E7 y
65.   XGpio led0(XGpio::PortF, XGpio::Pin9,  XGpio::ModeOutput);
    
66.   XGpio led1(XGpio::PortF, XGpio::Pin10, XGpio::ModeOutput);
    , ?8 I. r; g" M. b/ Y2 R, r! J. d
67.   
    
68.   led0.open();
    / `" f7 r  k9 I, {
69.   led1.open();
    " F! g% B; A7 S7 N! f# e
70.   
    ( O% e+ ?" ^+ V
71.   for(;;)
    
72.   {
    
73.     if(exti4.isFlagSet() != true)
    ! I5 [  @+ i3 i9 Q8 Y# h0 A1 u
74.     {
    % P5 [+ D( w! O* H/ F2 k
75.       exti4.setFlag();
    
76.       led0.setLevel(XGpio::LevelLow);
    
77.       led1.setLevel(XGpio::LevelHigh);
    
78.     }
    
79.     else
    
80.     {
    
81.       exti4.clearFlag();
    9 Y1 n; j) [% l, ~( r6 P2 k
82.       led0.setLevel(XGpio::LevelHigh);
    " W4 {$ P4 D0 F- K, j& G
83.       led1.setLevel(XGpio::LevelLow);
    0 n5 \) n- y! g( ]+ T% m
84.     }
    
85.    
    # r$ u8 D* J' f' G7 A
86.     HAL_Delay(250);
    
87.   }
    
88. }
    ( R. O0 E$ t5 N
89. 
    
90. /**
    $ K' V0 Z' t9 I. ]1 ~6 w
91.   * @brief  System Clock Configuration
    4 _+ f5 P5 k/ r. L/ c
92.   *         The system Clock is configured as follow :
    ) W9 y4 x9 t8 y& w8 R% X
93.   *            System Clock source            = PLL (HSE)
    / ]" w5 g. O8 h6 s, `6 K2 W
94.   *            SYSCLK(Hz)                     = 168000000
    % H  N5 f2 m+ [# `
95.   *            HCLK(Hz)                       = 168000000
    ' Y. G! v5 M" Z; Z1 ?9 S
96.   *            AHB Prescaler                  = 1
    
97.   *            APB1 Prescaler                 = 4
    : q5 c. T; y6 O2 _: R9 j' b
98.   *            APB2 Prescaler                 = 2
    6 T; ^  _! _& S
99.   *            HSE Frequency(Hz)              = 8000000
    
100.   *            PLL_M                          = 8
     
101.   *            PLL_N                          = 336
     ' T  o( b" }  z2 [: p
102.   *            PLL_P                          = 2
     
103.   *            PLL_Q                          = 7
     
104.   *            VDD(V)                         = 3.3
     
105.   *            Main regulator output voltage  = Scale1 mode
     
106.   *            Flash Latency(WS)              = 5
     1 y$ t3 g6 Z( q4 C7 ?/ n* c  R+ }( u
107.   * @param  None
     
108.   * @retval None
     
109.   */
     - J" {. M3 p. h, p( N
110. static void SystemClock_Config(void)
     
111. {
     - o; e/ r+ v8 c0 n* o
112.   RCC_ClkInitTypeDef RCC_ClkInitStruct;
     9 G; r  `! E' B
113.   RCC_OscInitTypeDef RCC_OscInitStruct;
     
114. 
       k7 e- g4 [0 Y. X, K1 r
115.   /* Enable Power Control clock */
     9 E( K/ A9 T3 {+ {8 Q* |
116.   __HAL_RCC_PWR_CLK_ENABLE();
     . S# e/ l1 w# ?  \* d- ^
117. 
     5 N- i3 k5 G& y, M' L2 e
118.   /* The voltage scaling allows optimizing the power consumption when the device is
     ; ?+ S, p: s* s, s: o& U+ t
119.      clocked below the maximum system frequency, to update the voltage scaling value
     + P) M4 V+ _; w1 s$ b* u
120.      regarding system frequency refer to product datasheet.  */
     
121.   __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
     
122. 
     
123.   /* Enable HSE Oscillator and activate PLL with HSE as source */
     
124.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
     - W8 U3 i8 k/ ?5 A( h5 a
125.   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
     0 s. ]0 Q7 H: j( f$ A( t
126.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
     4 ]( q: Q" {2 e1 E
127.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
     * C! T+ Q, n/ |
128.   RCC_OscInitStruct.PLL.PLLM = 8;
     : j* Z/ V2 H/ F# N! n* C. r
129.   RCC_OscInitStruct.PLL.PLLN = 336;
     
130.   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
     1 e* `% l0 V& H( n
131.   RCC_OscInitStruct.PLL.PLLQ = 7;
     
132.   HAL_RCC_OscConfig(&RCC_OscInitStruct);
     ; n, C5 R. ^: J
133.   
     & x) G- o. q6 v6 z1 }6 j0 ~3 N8 z
134.   /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
     - Z7 L+ i) O, }1 d# ~9 L9 B% ]
135.      clocks dividers */
     
136.   RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
     
137.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
     
138.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
     
139.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;  
     
140.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;  
     
141.   HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
     ! _8 s- b8 H- F  w4 H
142. 
     # U  L' }0 n) m" c
143.   /* STM32F405x/407x/415x/417x Revision Z devices: prefetch is supported  */
     $ N' k3 T" L5 }+ _, F6 Q1 D
144.   if (HAL_GetREVID() == 0x1001)
     
145.   {
     
146.     /* Enable the Flash prefetch */
     
147.     __HAL_FLASH_PREFETCH_BUFFER_ENABLE();
     " v( _, ~( C$ L5 f4 N
148.   }
     / m$ i# I3 ?" V0 Y. U5 ]- y
149. }
     + l9 E$ F# W, E( N0 J$ J5 S$ b7 O

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& V( F1 M2 f; f2 C归档链接

$ W7 G$ {9 ?2 kSTM32F4 C++ 封装库 之 GPIO

& n# c# V- x6 G1 F5 g

建议开一个 Github 代码库，方便用家一次性 clone 下来，并且追踪你这里的进度。

maxtch 发表于 2018-4-5 01:33
建议开一个 Github 代码库，方便用家一次性 clone 下来，并且追踪你这里的进度。 ...

, r* M9 y3 t/ n' O4 F现在还没想好程序的框架，过段时间会去 GitHub 上建立仓库。

这个很不错啊。必须得赞一个。