- （1）stm32开发之标准库的介绍

#if !defined (STM32F10X_LD) && !defined (STM32F10X_LD_VL) && !defined (STM32F10X_MD) && !defined (STM32F10X_MD_VL) && !defined (STM32F10X_HD) && !defined (STM32F10X_HD_VL) && !defined (STM32F10X_XL) && !defined (STM32F10X_CL)

/* #define STM32F10X_LD */ /*!< STM32F10X_LD: STM32 Low density devices */

/* #define STM32F10X_LD_VL */ /*!< STM32F10X_LD_VL: STM32 Low density Value Line devices */

/* #define STM32F10X_MD */ /*!< STM32F10X_MD: STM32 Medium density devices */

/* #define STM32F10X_MD_VL */ /*!< STM32F10X_MD_VL: STM32 Medium density Value Line devices */ /* #define STM32F10X_HD */ /*!< STM32F10X_HD: STM32 High density devices */

/* #define STM32F10X_HD_VL */ /*!< STM32F10X_HD_VL: STM32 High density value line devices */

/* #define STM32F10X_XL */ /*!< STM32F10X_XL: STM32 XL-density devices */

/* #define STM32F10X_CL */ /*!< STM32F10X_CL: STM32 Connectivity line devices */

#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.

- Low-density devices are STM32F101xx, STM32F102xx and STM32F103xx microcontrollers

where the Flash memory density ranges between 16 and 32 Kbytes.

- Low-density value line devices are STM32F100xx microcontrollers where the Flash

memory density ranges between 16 and 32 Kbytes.

- Medium-density devices are STM32F101xx, STM32F102xx and STM32F103xx microcontrollers

where the Flash memory density ranges between 64 and 128 Kbytes.

- Medium-density value line devices are STM32F100xx microcontrollers where the

Flash memory density ranges between 64 and 128 Kbytes.

- High-density devices are STM32F101xx and STM32F103xx microcontrollers where

the Flash memory density ranges between 256 and 512 Kbytes.

- High-density value line devices are STM32F100xx microcontrollers where the

Flash memory density ranges between 256 and 512 Kbytes.

- XL-density devices are STM32F101xx and STM32F103xx microcontrollers where

the Flash memory density ranges between 512 and 1024 Kbytes.

- Connectivity line devices are STM32F105xx and STM32F107xx microcontrollers.

*/

“stm32f10x.h”是整个标准外设库的入口文件，这个文件包含了STM32F10x全系列所有外设寄存器的定义（寄存器的基地址和布局）、位定义、中断向量表、存储空间的地址映射等。为了是这个文件适用于不同系列的产品，程序中是通过宏定义来实现不同产品的匹配的，上面这段程序的注释中已经详细给出了每个启动文件所对应的产品系列，与之对应，也要相应的修改这个入口文件，需要根据所使用的产品系列正确的注释/去掉相应的注释define。在这段程序的下方同样有这样的一个注释程序/*#define USE_STDPERIPH_DRIVER*/ 用于选择是否使用标准外设库，如果保留这个注释，则用户开发程序可以基于直接访问“stm32f10x.h”中定义的外设寄存器，所有的操作均基于寄存器完成，目前不使用固件库的单片机开发，如51、AVR、MSP430等其实都是采用此种方式，通过在对应型号的头文件中进行外设寄存器等方面的定义，从而在程序中对相应的寄存器操作完成相应的功能设计。

如果去掉/*#define USE_STDPERIPH_DRIVER*/的注释，则是使用标准外设库进行开发，用户需要使用在文件“stm32f10x_conf.h”中，选择要用的外设，外设同样是通过注释/去掉注释的方式来选择。示例程序如下：

/* Uncomment the line below to enable peripheral header file inclusion */

#include "stm32f10x_adc.h"

/* #include "stm32f10x_bkp.h" */

/* #include "stm32f10x_can.h" */

/* #include "stm32f10x_cec.h" */

/* #include "stm32f10x_crc.h" */

/* #include "stm32f10x_dac.h" */

/* #include "stm32f10x_dbgmcu.h" */

#include "stm32f10x_dma.h"

/* #include "stm32f10x_exti.h" */

/* #include "stm32f10x_flash.h" */

/* #include "stm32f10x_fsmc.h" */

#include "stm32f10x_gpio.h"

/* #include "stm32f10x_i2c.h" */

/* #include "stm32f10x_iwdg.h" */

/* #include "stm32f10x_pwr.h" */

#include "stm32f10x_rcc.h"

/* #include "stm32f10x_rtc.h" */

/* #include "stm32f10x_sdio.h" */

/* #include "stm32f10x_spi.h" */

/* #include "stm32f10x_tim.h" */

/* #include "stm32f10x_usart.h" */

/* #include "stm32f10x_wwdg.h" */

#include "misc.h" /* High level functions for NVIC and SysTick (add-on to CMSIS functions) */