stm32定义GPIO口方向和操作的代码

#include "stm32f10x.h"

#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)) 

//DEFINE IO OUT PORT
#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 IO IN PORT
#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 

//DEFINE IO OPERATE
#define PORTA_OUT(n)   BIT_ADDR(GPIOA_ODR_Addr,n)  //PORTA OUT
#define PORTA_IN(n)    BIT_ADDR(GPIOA_IDR_Addr,n)  //PORTA IN
#define PORTB_OUT(n)   BIT_ADDR(GPIOB_ODR_Addr,n)  //PORTB OUT
#define PORTB_IN(n)    BIT_ADDR(GPIOB_IDR_Addr,n)  //PORTB IN
#define PORTC_OUT(n)   BIT_ADDR(GPIOC_ODR_Addr,n)  //PORTC OUT
#define PORTC_IN(n)    BIT_ADDR(GPIOC_IDR_Addr,n)  //PORTC IN
#define PORTD_OUT(n)   BIT_ADDR(GPIOD_ODR_Addr,n)  //PORTD OUT
#define PORTD_IN(n)    BIT_ADDR(GPIOD_IDR_Addr,n)  //PORTD IN
#define PORTE_OUT(n)   BIT_ADDR(GPIOE_ODR_Addr,n)  //PORTE OUT
#define PORTE_IN(n)    BIT_ADDR(GPIOE_IDR_Addr,n)  //PORTE IN
#define PORTF_OUT(n)   BIT_ADDR(GPIOF_ODR_Addr,n)  //PORTF OUT
#define PORTF_IN(n)    BIT_ADDR(GPIOF_IDR_Addr,n)  //PORTF IN
#define PORTG_OUT(n)   BIT_ADDR(GPIOG_ODR_Addr,n)  //PORTG OUT
#define PORTG_IN(n)    BIT_ADDR(GPIOG_IDR_Addr,n)  //PORTG IN

#define TM1637_CLK           PORTC_OUT(7)
#define TM1637_DIO           PORTC_OUT(6)
#define TM1637_READ_DIO      PORTC_IN(6) 

//IO方向
#define TM1637_DIO_IN()     {GPIOC->CRL&=0XFFFF0FFF;GPIOC->CRL|=8<<12;}
#define TM1637_DIO_OUT()    {GPIOC->CRL&=0XFFFF0FFF;GPIOC->CRL|=3<<12;}

void TM1637_Start(void)
{
	TM1637_DIO_OUT();
  TM1637_CLK = 1;
	TM1637_DIO = 1;
	delay_us(2);
	TM1637_DIO = 0;
}

void TM1637_Ack(void)
{
	TM1637_DIO_IN();
  TM1637_CLK = 0;
	delay_us(5);
	while(TM1637_READ_DIO);
	TM1637_CLK = 1;
	delay_us(2);
	TM1637_CLK = 0;
}