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; }
posted on 2016-02-19 15:24 foggia2004 阅读(1867) 评论(0) 编辑 收藏 举报