给AT32的GPIO做个封装,这样可以像操作对象一样操作IO端口,方面程序移植
//////////////////////////////////////////////////////////////////////////////////
#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
#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
#define PA_PORT GPIOA
#define PB_PORT GPIOB
#define PC_PORT GPIOC
#define PD_PORT GPIOD
#define PE_PORT GPIOE
#define PF_PORT GPIOF
//------------------------------pin interface---------------------------//
typedef struct
{
void(*en)(void);
void(*dis)(void);
void(*tog)(void);
uint8_t(*out_st)(void);
uint8_t(*in_st)(void);
void(*dir_in_ft)(void); //浮空输入
void(*dir_in_up)(void); //上拉输入
void(*dir_out_pp)(void); //推挽输出
void(*dir_out_od)(void); //开漏输出
} port_io_pin_type;
#ifndef PORT_PIN_CTEAT
#define port_io_pin_mark(name, port, pin) \
extern const port_io_pin_type name
#else
#define port_io_pin_mark(name, port, pin) \
void name##_pin_en(void){port##out(pin)=1;} \
void name##_pin_dis(void){port##out(pin)=0;} \
void name##_pin_tog(void){port##out(pin)=!port##out(pin);} \
uint8_t name##_pin_out_st(void){return port##out(pin);} \
uint8_t name##_pin_in_st(void){return port##in(pin);} \
void name##_dir_in_ft(void){if(pin<=7){port##_PORT->CTRLL &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLL |= 4UL<<(pin&7)*4;}else{port##_PORT->CTRLH &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLH |= 4UL<<(pin&7)*4;}} \
void name##_dir_in_up(void){if(pin<=7){port##_PORT->CTRLL &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLL |= 8UL<<(pin&7)*4;}else{port##_PORT->CTRLH &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLH |= 8UL<<(pin&7)*4;} name##_pin_en();} \
void name##_dir_out_pp(void){if(pin<=7){port##_PORT->CTRLL &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLL |= 3UL<<(pin&7)*4;}else{port##_PORT->CTRLH &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLH |= 3UL<<(pin&7)*4;}} \
void name##_dir_out_od(void){if(pin<=7){port##_PORT->CTRLL &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLL |= 7UL<<(pin&7)*4;}else{port##_PORT->CTRLH &= ~(0x0FUL<<(pin&7)*4);port##_PORT->CTRLH |= 7UL<<(pin&7)*4;}} \
const port_io_pin_type name = { \
name##_pin_en, \
name##_pin_dis, \
name##_pin_tog, \
name##_pin_out_st, \
name##_pin_in_st, \
name##_dir_in_ft, \
name##_dir_in_up, \
name##_dir_out_pp, \
name##_dir_out_od \
}
#endif
//------------------------------pin function define---------------------------//
port_io_pin_mark(O_LED1, PD, 13);
port_io_pin_mark(O_LED2, PD, 14);
使用时,将上面代码放在头文件中, 比如pincfg.h
在C文件#include"pincfg.h"
保证有且只有一个C文件在#include"pincfg.h"前 #define PORT_PIN_CTEAT
主程序控制IO方式如下:
O_LED1.dir_out_pp();
O_LED1.tog();
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