今日再看过半年前自己写的这篇发现自己其时了解有误，stm32f10x.h与库开发并未存在太大联系，仅仅一个最为重要的寄存器地址到寄存器结构体变量的映射。
stm32f10x.h 这个头文件是STM32开发最为重要的一个头文件适当于我玩51那会，那个 reg52.h 。但关于STM32来说，它的寄存器数量是十分多的，假如依照操作51相同的方法来操作32的话，查数据手册来装备寄存器是十分费事的。所以ST开发了这个库，便利我们开发，缩短开发周期。在stm32f10x.h 中前面一开始就呈现了：
#ifndef __STM32F10x_H#define __STM32F10x_H#ifdef __cplusplusextern "C" {#endif
一开始我不解 extern “C” { 这个句子的意思，经度娘，了解到原来是用来阐明后边的界说都是运用C言语写的。这个__cplusplus 是指C++来的，4、5句的意思就是说假如用C++编译器的话，它里边是界说有__cplusplus 这个的，而经过extern “C” { 奉告编译器，这段代码是用C编写的，要依照C言语编译。这是由于C++里边有函数重载，编译的时分把参数也编译了，而C的话，编译只编译函数名。
go on：下面这段是用来界说器材容量，能够经过自己撤销注释来挑选，也能够在KEIL里边设置大局宏界说，2种方法。
#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#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)#error "Please select first the target STM32F10x device used in your application (in stm32f10x.h file)"#endif
假如没有界说器材的话，编译的时分就会呈现以下过错：
"Please select first the target STM32F10x device used in your application (in stm32f10x.h file)"
go on：
用于界说是否运用外设驱动，假如注释掉或许keil中没设大局宏界说的话，则代表不运用ST库供给的外设驱动库，在本文倒数第二段代码中有句
#ifdef USE_STDPERIPH_DRIVER
#include "stm32f10x_conf.h"
#endif
stm32f10x_conf.h用于外设注释装备。
#if !defined USE_STDPERIPH_DRIVER/*** @brief Comment the line below if you will not use the peripherals drivers.In this case, these drivers will not be included and the application code will be based on direct access to peripherals registers *//*#define USE_STDPERIPH_DRIVER*/#endif
下面应该是关于器材HSE的设置
/*** @brief In the following line adjust the value of External High Speed oscillator (HSE)used in your application Tip: To avoid modifying this file each time you need to use different HSE, youcan define the HSE value in your toolchain compiler preprocessor.*/ #if !defined HSE_VALUE#ifdef STM32F10X_CL #define HSE_VALUE ((uint32_t)25000000) /*!< Value of the External oscillator in Hz */#else #define HSE_VALUE ((uint32_t)8000000) /*!< Value of the External oscillator in Hz */#endif /* STM32F10X_CL */#endif /* HSE_VALUE */
设置发动超时值和HSI
/*** @brief In the following line adjust the External High Speed oscillator (HSE) Startup Timeout value */#define HSE_STARTUP_TIMEOUT ((uint16_t)0x0500) /*!< Time out for HSE start up */#define HSI_VALUE ((uint32_t)8000000) /*!< Value of the Internal oscillator in Hz*/
规范外设库版别号的界说
/*** @brief STM32F10x Standard Peripheral Library version number*/#define __STM32F10X_STDPERIPH_VERSION_MAIN (0x03) /*!< [31:24] main version */ #define __STM32F10X_STDPERIPH_VERSION_SUB1 (0x05) /*!< [23:16] sub1 version */#define __STM32F10X_STDPERIPH_VERSION_SUB2 (0x00) /*!< [15:8] sub2 version */#define __STM32F10X_STDPERIPH_VERSION_RC (0x00) /*!< [7:0] release candidate */ #define __STM32F10X_STDPERIPH_VERSION ( (__STM32F10X_STDPERIPH_VERSION_MAIN << 24)\|(__STM32F10X_STDPERIPH_VERSION_SUB1 << 16)\|(__STM32F10X_STDPERIPH_VERSION_SUB2 << 8)\|(__STM32F10X_STDPERIPH_VERSION_RC))
装备Cortex-M3处理器和核内外设
/*** @brief Configuration of the Cortex-M3 Processor and Core Peripherals */#ifdef STM32F10X_XL#define __MPU_PRESENT 1 /*!< STM32 XL-density devices provide an MPU */#else#define __MPU_PRESENT 0 /*!< Other STM32 devices does not provide an MPU */#endif /* STM32F10X_XL */#define __NVIC_PRIO_BITS 4 /*!< STM32 uses 4 Bits for the Priority Levels */#define __Vendor_SysTickConfig 0 /*!< Set to 1 if different SysTick Config is used */
中断线界说，前部分关于一切STM32F10x都有相同界说，后部分依据不同器材容量选用条件编译界说不同中断线。
/*** @brief STM32F10x Interrupt Number Definition, according to the selected device * in @ref Library_configuration_section */typedef enum IRQn{/****** Cortex-M3 Processor Exceptions Numbers ***************************************************/NonMaskableInt_IRQn = -14, /*!< 2 Non Maskable Interrupt */MemoryManagement_IRQn = -12, /*!< 4 Cortex-M3 Memory Management Interrupt */BusFault_IRQn = -11, /*!< 5 Cortex-M3 Bus Fault Interrupt */UsageFault_IRQn = -10, /*!< 6 Cortex-M3 Usage Fault Interrupt */SVCall_IRQn = -5, /*!< 11 Cortex-M3 SV Call Interrupt */DebugMonitor_IRQn = -4, /*!< 12 Cortex-M3 Debug Monitor Interrupt */PendSV_IRQn = -2, /*!< 14 Cortex-M3 Pend SV Interrupt */SysTick_IRQn = -1, /*!< 15 Cortex-M3 System Tick Interrupt *//****** STM32 specific Interrupt Numbers *********************************************************/WWDG_IRQn = 0, /*!< Window WatchDog Interrupt */PVD_IRQn = 1, /*!< PVD through EXTI Line detection Interrupt */TAMPER_IRQn = 2, /*!< Tamper Interrupt */RTC_IRQn = 3, /*!< RTC global Interrupt */FLASH_IRQn = 4, /*!< FLASH global Interrupt */RCC_IRQn = 5, /*!< RCC global Interrupt */EXTI0_IRQn = 6, /*!< EXTI Line0 Interrupt */EXTI1_IRQn = 7, /*!< EXTI Line1 Interrupt */EXTI2_IRQn = 8, /*!< EXTI Line2 Interrupt */EXTI3_IRQn = 9, /*!< EXTI Line3 Interrupt */EXTI4_IRQn = 10, /*!< EXTI Line4 Interrupt */DMA1_Channel1_IRQn = 11, /*!< DMA1 Channel 1 global Interrupt */DMA1_Channel2_IRQn = 12, /*!< DMA1 Channel 2 global Interrupt */DMA1_Channel3_IRQn = 13, /*!< DMA1 Channel 3 global Interrupt */DMA1_Channel4_IRQn = 14, /*!< DMA1 Channel 4 global Interrupt */DMA1_Channel5_IRQn = 15, /*!< DMA1 Channel 5 global Interrupt */DMA1_Channel6_IRQn = 16, /*!< DMA1 Channel 6 global Interrupt */DMA1_Channel7_IRQn = 17, /*!< DMA1 Channel 7 global Interrupt */#ifdef STM32F10X_LD...#endif /* STM32F10X_LD */ #ifdef STM32F10X_LD_VL...#endif /* STM32F10X_LD_VL */#ifdef STM32F10X_MD...#endif /* STM32F10X_MD */ #ifdef STM32F10X_MD_VL...#endif /* STM32F10X_MD_VL */#ifdef STM32F10X_HD...#endif /* STM32F10X_HD */ .........} IRQn_Type;
为兼容旧版别相似而生。
@addtogroup Exported_types/*!< STM32F10x Standard Peripheral Library old types (maintained for legacy purpose) */typedef int32_t s32;typedef int16_t s16;typedef int8_t s8;typedef const int32_t sc32; /*!< Read Only */typedef const int16_t sc16; /*!< Read Only */typedef const int8_t sc8; /*!< Read Only */typedef __IO int32_t vs32;typedef __IO int16_t vs16;typedef __IO int8_t vs8;typedef __I int32_t vsc32; /*!< Read Only */typedef __I int16_t vsc16; /*!< Read Only */typedef __I int8_t vsc8; /*!< Read Only */typedef uint32_t u32;typedef uint16_t u16;typedef uint8_t u8;typedef const uint32_t uc32; /*!< Read Only */typedef const uint16_t uc16; /*!< Read Only */typedef const uint8_t uc8; /*!< Read Only */typedef __IO uint32_t vu32;typedef __IO uint16_t vu16;typedef __IO uint8_t vu8;typedef __I uint32_t vuc32; /*!< Read Only */typedef __I uint16_t vuc16; /*!< Read Only */typedef __I uint8_t vuc8; /*!< Read Only */typedef enum {RESET = 0, SET = !RESET} FlagStatus, ITStatus;typedef enum {DISABLE = 0, ENABLE = !DISABLE} FunctionalState;#define IS_FUNCTIONAL_STATE(STATE) (((STATE) == DISABLE) || ((STATE) == ENABLE))typedef enum {ERROR = 0, SUCCESS = !ERROR} ErrorStatus;/*!< STM32F10x Standard Peripheral Library old definitions (maintained for legacy purpose) */#define HSEStartUp_TimeOut HSE_STARTUP_TIMEOUT#define HSE_Value HSE_VALUE#define HSI_Value HSI_VALUE
把悉数外设寄存器界说成结构体
/* @addtogroup Peripheral_registers_structures */ /** * @brief Analog to Digital Converter */typedef struct{} ADC_TypeDef;/** * @brief Backup Registers */typedef struct{} BKP_TypeDef;/** * @brief Controller Area Network TxMailBox */typedef struct{} CAN_TxMailBox_TypeDef;/** * @brief Controller Area Network FIFOMailBox */typedef struct{} CAN_FIFOMailBox_TypeDef;/** * @brief Controller Area Network FilterRegister */typedef struct{} CAN_FilterRegister_TypeDef;/** * @brief Controller Area Network */typedef struct{} CAN_TypeDef;/** * @brief Consumer Electronics Control (CEC)*/typedef struct{} CEC_TypeDef;/** * @brief CRC calculation unit */typedef struct{} CRC_TypeDef;/** * @brief Digital to Analog Converter*/typedef struct{} DAC_TypeDef;/** * @brief Debug MCU*/typedef struct{}DBGMCU_TypeDef;/** * @brief DMA Controller*/typedef struct{} DMA_Channel_TypeDef;typedef struct{} DMA_TypeDef;/** * @brief Ethernet MAC*/typedef struct{} ETH_TypeDef;/** * @brief External Interrupt/Event Controller*/typedef struct{} EXTI_TypeDef;/** * @brief FLASH Registers*/typedef struct{} FLASH_TypeDef;/** * @brief Option Bytes Registers*/typedef struct{} OB_TypeDef;/** * @brief Flexible Static Memory Controller*/typedef struct{} FSMC_Bank1_TypeDef; /** * @brief Flexible Static Memory Controller Bank1E*/typedef struct{} FSMC_Bank1E_TypeDef;/** * @brief Flexible Static Memory Controller Bank2*/typedef struct{} FSMC_Bank2_TypeDef; /** * @brief Flexible Static Memory Controller Bank3*/typedef struct{} FSMC_Bank3_TypeDef; /** * @brief General Purpose I/O*/typedef struct{} GPIO_TypeDef;/** * @brief Alternate Function I/O*/typedef struct{} AFIO_TypeDef;/** * @brief Inter Integrated Circuit Interface*/typedef struct{} I2C_TypeDef;/** * @brief Independent WATCHDOG*/typedef struct{} IWDG_TypeDef;/** * @brief Power Control*/typedef struct{} PWR_TypeDef;/** * @brief Reset and Clock Control*/typedef struct{} RCC_TypeDef;/** * @brief Real-Time Clock*/typedef struct{} RTC_TypeDef;/** * @brief SD host Interface*/typedef struct{} SDIO_TypeDef;/** * @brief Serial Peripheral Interface*/typedef struct{} SPI_TypeDef;/** * @brief TIM*/typedef struct{} TIM_TypeDef;/** * @brief Universal Synchronous Asynchronous Receiver Transmitter*/typedef struct{} USART_TypeDef;/** * @brief Window WATCHDOG*/typedef struct{} WWDG_TypeDef;
对上面界说的结构体的成员，即寄存器映射到相应的地址上，以下包括一个是地址映射，一个是寄存器声明。
/** @addtogroup Peripheral_memory_map* @{*/#define FLASH_BASE ((uint32_t)0x08000000) /*!< FLASH base address in the alias region */#define SRAM_BASE ((uint32_t)0x20000000) /*!< SRAM base address in the alias region */#define PERIPH_BASE ((uint32_t)0x40000000) /*!< Peripheral base address in the alias region */#define SRAM_BB_BASE ((uint32_t)0x22000000) /*!< SRAM base address in the bit-band region */#define PERIPH_BB_BASE ((uint32_t)0x42000000) /*!< Peripheral base address in the bit-band region */#define FSMC_R_BASE ((uint32_t)0xA0000000) /*!< FSMC registers base address *//*!< Peripheral memory map */#define APB1PERIPH_BASE PERIPH_BASE#define APB2PERIPH_BASE (PERIPH_BASE + 0x10000)#define AHBPERIPH_BASE (PERIPH_BASE + 0x20000)#define TIM2_BASE (APB1PERIPH_BASE + 0x0000)#define TIM3_BASE (APB1PERIPH_BASE + 0x0400)....../** @addtogroup Peripheral_declaration* @{*/ #define TIM2 ((TIM_TypeDef *) TIM2_BASE)#define TIM3 ((TIM_TypeDef *) TIM3_BASE)#define TIM4 ((TIM_TypeDef *) TIM4_BASE)#define TIM5 ((TIM_TypeDef *) TIM5_BASE)#define TIM6 ((TIM_TypeDef *) TIM6_BASE)......
一最初讲过，假如界说运用外设驱动，则包括 stm32f10x_conf.h用来装备所运用外设的库函数
#ifdef USE_STDPERIPH_DRIVER#include "stm32f10x_conf.h"#endif
界说一些宏的操作，下面是位操作。
/** @addtogroup Exported_macro* @{*/#define SET_BIT(REG, BIT) ((REG) |= (BIT))#define CLEAR_BIT(REG, BIT) ((REG) &= ~(BIT))#define READ_BIT(REG, BIT) ((REG) & (BIT))#define CLEAR_REG(REG) ((REG) = (0x0))#define WRITE_REG(REG, VAL) ((REG) = (VAL))#define READ_REG(REG) ((REG))#define MODIFY_REG(REG, CLEARMASK, SETMASK) WRITE_REG((REG), (((READ_REG(REG)) & (~(CLEARMASK))) | (SETMASK)))
#ifdef __cplusplus}#endif#endif /* __STM32F10x_H */
上面的代码源自 ST3.5版别库的 stm32f10x.h 文件。归纳以上，能够看出 stm32f10x.h 用于界说了器材、中断线、数据类型、结构体封装的寄存器、寄存器地址映射、寄存器位操作以及防C++编译的条件编译。
