stm32中如何进行位定义

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#define BITBAND(addr, bitnum) ((addr & 0xF0000000)+0x2000000+((addr &0xFFFFF)<<5)+(bitnum<<2))

#define MEM_ADDR(addr)  *((volatile unsigned long  *)(addr)) #define BIT_ADDR(addr, bitnum)   MEM_ADDR(BITBAND(addr, bitnum)) //IO口地址映射#define GPIOA_ODR_Addr    (GPIOA_BASE+12) //0x4001080C #define GPIOB_ODR_Addr    (GPIOB_BASE+12) //0x40010C0C #define GPIOC_ODR_Addr    (GPIOC_BASE+12) //0x4001100C #define GPIOD_ODR_Addr    (GPIOD_BASE+12) //0x4001140C #define GPIOE_ODR_Addr    (GPIOE_BASE+12) //0x4001180C #define GPIOF_ODR_Addr    (GPIOF_BASE+12) //0x40011A0C    #define GPIOG_ODR_Addr    (GPIOG_BASE+12) //0x40011E0C    #define GPIOA_IDR_Addr    (GPIOA_BASE+8) //0x40010808 #define GPIOB_IDR_Addr    (GPIOB_BASE+8) //0x40010C08 #define GPIOC_IDR_Addr    (GPIOC_BASE+8) //0x40011008 #define GPIOD_IDR_Addr    (GPIOD_BASE+8) //0x40011408 #define GPIOE_IDR_Addr    (GPIOE_BASE+8) //0x40011808 #define GPIOF_IDR_Addr    (GPIOF_BASE+8) //0x40011A08 #define GPIOG_IDR_Addr    (GPIOG_BASE+8) //0x40011E08  //IO口操作,只对单一的IO口!//确保n的值小于16!#define PAout(n)   BIT_ADDR(GPIOA_ODR_Addr,n)  //输出 #define PAin(n)    BIT_ADDR(GPIOA_IDR_Addr,n)  //输入 #define PBout(n)   BIT_ADDR(GPIOB_ODR_Addr,n)  //输出 #define PBin(n)    BIT_ADDR(GPIOB_IDR_Addr,n)  //输入 #define PCout(n)   BIT_ADDR(GPIOC_ODR_Addr,n)  //输出 #define PCin(n)    BIT_ADDR(GPIOC_IDR_Addr,n)  //输入 #define PDout(n)   BIT_ADDR(GPIOD_ODR_Addr,n)  //输出 #define PDin(n)    BIT_ADDR(GPIOD_IDR_Addr,n)  //输入 #define PEout(n)   BIT_ADDR(GPIOE_ODR_Addr,n)  //输出 #define PEin(n)    BIT_ADDR(GPIOE_IDR_Addr,n)  //输入#define PFout(n)   BIT_ADDR(GPIOF_ODR_Addr,n)  //输出 #define PFin(n)    BIT_ADDR(GPIOF_IDR_Addr,n)  //输入#define PGout(n)   BIT_ADDR(GPIOG_ODR_Addr,n)  //输出 #define PGin(n)    BIT_ADDR(GPIOG_IDR_Addr,n)  //输入///////////////////////////////////////////////////////////////////Ex_NVIC_Config专用定义#define GPIO_A 0#define GPIO_B 1#define GPIO_C 2#define GPIO_D 3#define GPIO_E 4#define GPIO_F 5#define GPIO_G 6 /////////这是STM32F103 位带操作的定义方式,看懂了就可以进行位定义了,出自 正点原子资料

转自：https://www.baidu.com/s?ie=utf-8&f=8&rsv_bp=0&rsv_idx=1&tn=baidu&wd=PFout&rsv_pq=ece993de00008aca&rsv_t=7c04EHXBypxyV2LlcGnmSyr3zqI54yUiinQ0%2FFpVddwdFKgUWiSBYAh%2BQOo&rqlang=cn&rsv_enter=0&rsv_n=2&rsv_sug3=1&rsv_sug1=1&rsv_sug7=100&inputT=618&rsv_sug4=619

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