這幾天看了下 mbed 的源碼，給上層應用調用的接口封裝的還是不錯的。代碼質量比較高，注釋也很詳細，文檔和例程比較全。但是驅動層的程序全是 C 語言編寫的，代碼質量就沒有那么高了，注釋比較少而且不規范，比較懷疑 mbed 的穩定性。mbed 的實時內核是用的 RTX5 ，文件系統用的 FatFs ，還有一些開源的協議棧，整套系統比較繁雜。mbed 框架是為物聯網設備開發的，工業控制級別的產品可以考慮用 RTE 框架。RTE 框架目前驅動層程序還不太完善，有好多需要自己去實現，可能在過一段時間會好一些吧。總之物聯網產品可以用 mbed ，工業控制產品可以用 RTE 。這幾天封裝了 EXTI ，距離整套系統可以產生生產力還有很長的距離要走，我也不知道整個系統會成什么樣子，我能堅持多久，不管了先做再說。在這里分享我的 STM32F4 C++ 封裝之旅。今天分享《STM32F4 C++ 封裝庫 之 EXTI》，直接上代碼了~

stm32f4xx_xexti.h 文件

/**?

******************************************************************************?

* \file ? ?stm32f4xx_xexti.h?

* \author ?XinLi?

* \version v1.0?

* \date ? ?20-March-2018?

* \brief ? Header file for external interrupt/event controller module.?

******************************************************************************?

* \attention?

*?

* Copyright ? 2018 XinLi?

*?

* This program is free software: you can redistribute it and/or modify?

* it under the terms of the GNU General Public License as published by?

* the Free Software Foundation, either version 3 of the License, or?

* (at your option) any later version.?

*?

* This program is distributed in the hope that it will be useful,?

* but WITHOUT ANY WARRANTY; without even the implied warranty of?

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ?See the?

* GNU General Public License for more details.?

*?

* You should have received a copy of the GNU General Public License?

* along with this program. ?If not, see .?

*?

******************************************************************************?

*/ ?

#ifndef STM32F4XX_XEXTI_H ?

#define STM32F4XX_XEXTI_H ?

#include "stm32f4xx_ll_exti.h" ?

/*! External interrupt/event controller module. */ ?

class XExti ?

{ ?

public: ?

/*! Enumerate of EXTI lines. */ ?

enum ExtiLine ?

{ ?

Line0 ?= LL_EXTI_LINE_0, ?/*!< EXTI line 0. */ ?

Line1 ?= LL_EXTI_LINE_1, ?/*!< EXTI line 1. */ ?

Line2 ?= LL_EXTI_LINE_2, ?/*!< EXTI line 2. */ ?

Line3 ?= LL_EXTI_LINE_3, ?/*!< EXTI line 3. */ ?

Line4 ?= LL_EXTI_LINE_4, ?/*!< EXTI line 4. */ ?

Line5 ?= LL_EXTI_LINE_5, ?/*!< EXTI line 5. */ ?

Line6 ?= LL_EXTI_LINE_6, ?/*!< EXTI line 6. */ ?

Line7 ?= LL_EXTI_LINE_7, ?/*!< EXTI line 7. */ ?

Line8 ?= LL_EXTI_LINE_8, ?/*!< EXTI line 8. */ ?

Line9 ?= LL_EXTI_LINE_9, ?/*!< EXTI line 9. */ ?

Line10 = LL_EXTI_LINE_10, /*!< EXTI line 10. */ ?

Line11 = LL_EXTI_LINE_11, /*!< EXTI line 11. */ ?

Line12 = LL_EXTI_LINE_12, /*!< EXTI line 12. */ ?

Line13 = LL_EXTI_LINE_13, /*!< EXTI line 13. */ ?

Line14 = LL_EXTI_LINE_14, /*!< EXTI line 14. */ ?

Line15 = LL_EXTI_LINE_15, /*!< EXTI line 15. */ ?

#ifdef LL_EXTI_LINE_16 ?

Line16 = LL_EXTI_LINE_16, /*!< EXTI line 16. */ ?

#endif ?

#ifdef LL_EXTI_LINE_17 ?

Line17 = LL_EXTI_LINE_17, /*!< EXTI line 17. */ ?

#endif ?

#ifdef LL_EXTI_LINE_18 ?

Line18 = LL_EXTI_LINE_18, /*!< EXTI line 18. */ ?

#endif ?

#ifdef LL_EXTI_LINE_19 ?

Line19 = LL_EXTI_LINE_19, /*!< EXTI line 19. */ ?

#endif ?

#ifdef LL_EXTI_LINE_20 ?

Line20 = LL_EXTI_LINE_20, /*!< EXTI line 20. */ ?

#endif ?

#ifdef LL_EXTI_LINE_21 ?

Line21 = LL_EXTI_LINE_21, /*!< EXTI line 21. */ ?

#endif ?

#ifdef LL_EXTI_LINE_22 ?

Line22 = LL_EXTI_LINE_22, /*!< EXTI line 22. */ ?

#endif ?

#ifdef LL_EXTI_LINE_23 ?

Line23 = LL_EXTI_LINE_23, /*!< EXTI line 23. */ ?

#endif ?

#ifdef LL_EXTI_LINE_24 ?

Line24 = LL_EXTI_LINE_24, /*!< EXTI line 24. */ ?

#endif ?

#ifdef LL_EXTI_LINE_25 ?

Line25 = LL_EXTI_LINE_25, /*!< EXTI line 25. */ ?

#endif ?

#ifdef LL_EXTI_LINE_26 ?

Line26 = LL_EXTI_LINE_26, /*!< EXTI line 26. */ ?

#endif ?

#ifdef LL_EXTI_LINE_27 ?

Line27 = LL_EXTI_LINE_27, /*!< EXTI line 27. */ ?

#endif ?

#ifdef LL_EXTI_LINE_28 ?

Line28 = LL_EXTI_LINE_28, /*!< EXTI line 28. */ ?

#endif ?

#ifdef LL_EXTI_LINE_29 ?

Line29 = LL_EXTI_LINE_29, /*!< EXTI line 29. */ ?

#endif ?

#ifdef LL_EXTI_LINE_30 ?

Line30 = LL_EXTI_LINE_30, /*!< EXTI line 30. */ ?

#endif ?

#ifdef LL_EXTI_LINE_31 ?

Line31 = LL_EXTI_LINE_31, /*!< EXTI line 31. */ ?

#endif ?

}; ?

/*! Enumerate of EXTI modes. */ ?

enum ExtiMode ?

{ ?

ModeInterrupt ? ? ?= LL_EXTI_MODE_IT, ? ? ? /*!< EXTI interrupt mode. */ ?

ModeEvent ? ? ? ? ?= LL_EXTI_MODE_EVENT, ? ?/*!< EXTI event mode. */ ?

ModeInterruptEvent = LL_EXTI_MODE_IT_EVENT, /*!< EXTI interrupt and event mode. */ ?

}; ?

/*! Enumerate of EXTI triggers. */ ?

enum ExtiTrigger ?

{ ?

TriggerNone ? ? ? ? ?= LL_EXTI_TRIGGER_NONE, ? ? ? ? ? /*!< EXTI none trigger. */ ?

TriggerRising ? ? ? ?= LL_EXTI_TRIGGER_RISING, ? ? ? ? /*!< EXTI rising trigger. */ ?

TriggerFalling ? ? ? = LL_EXTI_TRIGGER_FALLING, ? ? ? ?/*!< EXTI falling trigger. */ ?

TriggerRisingFalling = LL_EXTI_TRIGGER_RISING_FALLING, /*!< EXTI rising and falling trigger. */ ?

}; ?

XExti(ExtiLine line, ExtiMode mode, ExtiTrigger trigger = TriggerNone); ?

virtual ~XExti(); ?

void setLine(ExtiLine line); ?

ExtiLine getLine() const; ?

void setMode(ExtiMode mode); ?

ExtiMode getMode() const; ?

void setTrigger(ExtiTrigger trigger); ?

ExtiTrigger getTrigger() const; ?

void setFlag(); ?

void clearFlag(); ?

bool isFlagSet() const; ?

bool open(); ?

void close(); ?

bool isOpen() const; ?

private: ?

ExtiLine ? ?line; ?

ExtiMode ? ?mode; ?

ExtiTrigger trigger; ?

bool ? ? ? ?openFlag; ?

XExti(const XExti &) = delete; ?

XExti & operator = (const XExti &) = delete; ?

}; ?

#endif // STM32F4XX_XEXTI_H?

stm32f4xx_xexti.cpp 文件

/**?

******************************************************************************?

* \file ? ?stm32f4xx_xexti.cpp?

* \author ?XinLi?

* \version v1.0?

* \date ? ?20-March-2018?

* \brief ? External interrupt/event controller module driver.?

******************************************************************************?

* \attention?

*?

* Copyright ? 2018 XinLi?

*?

* This program is free software: you can redistribute it and/or modify?

* it under the terms of the GNU General Public License as published by?

* the Free Software Foundation, either version 3 of the License, or?

* (at your option) any later version.?

*?

* This program is distributed in the hope that it will be useful,?

* but WITHOUT ANY WARRANTY; without even the implied warranty of?

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ?See the?

* GNU General Public License for more details.?

*?

* You should have received a copy of the GNU General Public License?

* along with this program. ?If not, see .?

*?

******************************************************************************?

*/?