STM32之GPIO端口位带操作

#ifndef __SYS_H
#define __SYS_H
#include "stm32f10x.h"

//位带操作
//把“位带地址＋位序号”转换别名地址宏
#define BITBAND(addr, bitnum) ((addr & 0xF0000000)+0x2000000+((addr &0xFFFFF)<<5)+(bitnum<<2))
//把该地址转换成一个指针
#define MEM_ADDR(addr)  *((volatile unsigned long  *)(addr))
#define BIT_ADDR(addr, bitnum) MEM_ADDR(BITBAND(addr, bitnum)) 

//GPIO输出输入地址映射
#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 

//GPIO输入输出定义
#define PAOut(n)   BIT_ADDR(GPIOA_ODR_Addr,n)  //GPIOA的输出
#define PAIn(n)    BIT_ADDR(GPIOA_IDR_Addr,n)  //GPIOA的输入

#define PBOut(n)   BIT_ADDR(GPIOB_ODR_Addr,n)  //GPIOB的输出
#define PBIn(n)    BIT_ADDR(GPIOB_IDR_Addr,n)  //GPIOB的输入

#define PCOut(n)   BIT_ADDR(GPIOC_ODR_Addr,n)  //GPIOC的输出
#define PCIn(n)    BIT_ADDR(GPIOC_IDR_Addr,n)  //GPIOC的输入

#define PDOut(n)   BIT_ADDR(GPIOD_ODR_Addr,n)  //GPIOD的输出
#define PDIn(n)    BIT_ADDR(GPIOD_IDR_Addr,n)  //GPIOD的输入

#define PEOut(n)   BIT_ADDR(GPIOE_ODR_Addr,n)  //GPIOE的输出
#define PEIn(n)    BIT_ADDR(GPIOE_IDR_Addr,n)  //GPIOE的输入

#define PFOut(n)   BIT_ADDR(GPIOF_ODR_Addr,n)  //GPIOF的输出
#define PFIn(n)    BIT_ADDR(GPIOF_IDR_Addr,n)  //GPIOF的输入

#define PGOut(n)   BIT_ADDR(GPIOG_ODR_Addr,n)  //GPIOG的输出
#define PGIn(n)    BIT_ADDR(GPIOG_IDR_Addr,n)  //GPIOG的输入

/*
使用方法
#define TM1637_CLK           PCOut(7)  ---设置GPIOC的7口向TM1637的CLK通讯进行输出
#define TM1637_DIO           PCOut(6)  ---设置GPIOC的6口向TM1637的DIO通讯进行输出
#define TM1637_READ_DIO      PCIn(6)   ---设置GPIOC的6口读取TM1637的DIO数据
*/