stm32工程中在Keil中宏定义

【STM32F0工程】【HAL库】

在工程中包含一个stm32f0xx.h头文件，在这个文件中通过宏定义，选择工程使用的器件。然后根据选择的器件不同再包含对应器件的头文件，比如stm32f0x8.h。

 

#if !defined (STM32F030x6) && !defined (STM32F030x8) &&                           \
    !defined (STM32F031x6) && !defined (STM32F038xx) &&                           \
    !defined (STM32F042x6) && !defined (STM32F048xx) && !defined (STM32F070x6) && \
    !defined (STM32F051x8) && !defined (STM32F058xx) &&                           \
    !defined (STM32F071xB) && !defined (STM32F072xB) && !defined (STM32F078xx) && !defined (STM32F070xB) && \
    !defined (STM32F091xC) && !defined (STM32F098xx) && !defined (STM32F030xC)
  /* #define STM32F030x6 */  /*!< STM32F030x4, STM32F030x6 Devices (STM32F030xx microcontrollers where the Flash memory ranges between 16 and 32 Kbytes)              */
  /* #define STM32F030x8 */  /*!< STM32F030x8 Devices (STM32F030xx microcontrollers where the Flash memory is 64 Kbytes)                                              */
  /* #define STM32F031x6 */  /*!< STM32F031x4, STM32F031x6 Devices (STM32F031xx microcontrollers where the Flash memory ranges between 16 and 32 Kbytes)              */
  /* #define STM32F038xx */  /*!< STM32F038xx Devices (STM32F038xx microcontrollers where the Flash memory is 32 Kbytes)                                              */
  /* #define STM32F042x6 */  /*!< STM32F042x4, STM32F042x6 Devices (STM32F042xx microcontrollers where the Flash memory ranges between 16 and 32 Kbytes)              */
  /* #define STM32F048x6 */  /*!< STM32F048xx Devices (STM32F042xx microcontrollers where the Flash memory is 32 Kbytes)                                              */
  /* #define STM32F051x8 */  /*!< STM32F051x4, STM32F051x6, STM32F051x8 Devices (STM32F051xx microcontrollers where the Flash memory ranges between 16 and 64 Kbytes) */
  /* #define STM32F058xx */  /*!< STM32F058xx Devices (STM32F058xx microcontrollers where the Flash memory is 64 Kbytes)                                              */
  /* #define STM32F070x6 */  /*!< STM32F070x6 Devices (STM32F070x6 microcontrollers where the Flash memory ranges between 16 and 32 Kbytes)                           */
  /* #define STM32F070xB */  /*!< STM32F070xB Devices (STM32F070xB microcontrollers where the Flash memory ranges between 64 and 128 Kbytes)                          */
  /* #define STM32F071xB */  /*!< STM32F071x8, STM32F071xB Devices (STM32F071xx microcontrollers where the Flash memory ranges between 64 and 128 Kbytes)             */
  /* #define STM32F072xB */  /*!< STM32F072x8, STM32F072xB Devices (STM32F072xx microcontrollers where the Flash memory ranges between 64 and 128 Kbytes)             */
  /* #define STM32F078xx */  /*!< STM32F078xx Devices (STM32F078xx microcontrollers where the Flash memory is 128 Kbytes)                                             */
  /* #define STM32F030xC */  /*!< STM32F030xC Devices (STM32F030xC microcontrollers where the Flash memory is 256 Kbytes)                                             */  
  /* #define STM32F091xC */  /*!< STM32F091xB, STM32F091xC Devices (STM32F091xx microcontrollers where the Flash memory ranges between 128 and 256 Kbytes)            */
  /* #define STM32F098xx */  /*!< STM32F098xx Devices (STM32F098xx microcontrollers where the Flash memory is 256 Kbytes)                                             */
#endif
   
/*  Tip: To avoid modifying this file each time you need to switch between these
        devices, you can define the device in your toolchain compiler preprocessor.

上面是stm32f0xx.h头文件中的代码，这里没有定义任何器件。注意最后的tip，提示未避免修改此文件，可以在编译器中定义器件。所以器件的宏定义是在keil中定义的。

 

这个宏定义很关键，如果在device选项卡修改了器件，这里的宏定义不会自己修改，如果不手动修改，编译就好有警告。

把宏定义也同步修改后，再编译，警告就没有了。具体修改成什么，可以查看stm32f0xx.h中的代码。