好吧，不得不承认，我使用飞思卡尔的XS128单片机已经非常之习惯了，结果一上手atmega8，最令我反感的就是atmega8不能对IO引脚进行操作，非要用些繁琐的位操作。我就不，我就要像飞思卡尔那样操作。。。

于是。。。。。

把我写的下面这个头文件塞到winavr目录的include/avr中，并在io.h头文件的最后包含这个头文件。

嘿嘿，一切变得是那么的亲切与熟悉。。。。。。

/*********************************************************** 

*  函数库说明：ATMEGE8  

*  版本：      v1.0                                                             

*                                                                                           

************************************************************ 

*注意：  无                                        

***********************************************************/  

#ifndef _BIT_  

#define _BIT_  

//定义一个8字节的位段 bit0~7是每个位段名称 1代表一位 PBIT就是整个位段的名称  

typedef struct   

{   

     unsigned bit0 : 1 ;   

     unsigned bit1 : 1 ;   

     unsigned bit2 : 1 ;   

     unsigned bit3 : 1 ;   

     unsigned bit4 : 1 ;   

     unsigned bit5 : 1 ;   

     unsigned bit6 : 1 ;   

     unsigned bit7 : 1 ;   

}PBIT;  

//强制转换  

#define PORTABIT    (*(volatile PBIT *)0x3B)  

#define DDRABIT     (*(volatile PBIT *)0x3A)   

#define PINABIT     (*(volatile PBIT *)0x39)  

#define PORTBBIT    (*(volatile PBIT *)0x38)   

#define DDRBBIT     (*(volatile PBIT *)0x37)   

#define PINBBIT     (*(volatile PBIT *)0x36)  

#define PORTCBIT    (*(volatile PBIT *)0x35)   

#define DDRCBIT     (*(volatile PBIT *)0x34)   

#define PINCBIT     (*(volatile PBIT *)0x33)  

#define PORTDBIT    (*(volatile PBIT *)0x32)   

#define DDRDBIT     (*(volatile PBIT *)0x31)   

#define PINDBIT     (*(volatile PBIT *)0x30)  

//继续封装  

#define PORTA_PA0 PORTABIT.bit0  

#define PORTA_PA1 PORTABIT.bit1  

#define PORTA_PA2 PORTABIT.bit2  

#define PORTA_PA3 PORTABIT.bit3  

#define PORTA_PA4 PORTABIT.bit4  

#define PORTA_PA5 PORTABIT.bit5  

#define PORTA_PA6 PORTABIT.bit6  

#define PORTA_PA7 PORTABIT.bit7  

#define PORTB_PB0 PORTBBIT.bit0  

#define PORTB_PB1 PORTBBIT.bit1  

#define PORTB_PB2 PORTBBIT.bit2  

#define PORTB_PB3 PORTBBIT.bit3  

#define PORTB_PB4 PORTBBIT.bit4  

#define PORTB_PB5 PORTBBIT.bit5  

#define PORTB_PB6 PORTBBIT.bit6  

#define PORTB_PB7 PORTBBIT.bit7  

#define PORTC_PC0 PORTCBIT.bit0  

#define PORTC_PC1 PORTCBIT.bit1  

#define PORTC_PC2 PORTCBIT.bit2  

#define PORTC_PC3 PORTCBIT.bit3  

#define PORTC_PC4 PORTCBIT.bit4  

#define PORTC_PC5 PORTCBIT.bit5  

#define PORTC_PC6 PORTCBIT.bit6  

#define PORTC_PC7 PORTCBIT.bit7  

#define PORTD_PD0 PORTDBIT.bit0  

#define PORTD_PD1 PORTDBIT.bit1  

#define PORTD_PD2 PORTDBIT.bit2  

#define PORTD_PD3 PORTDBIT.bit3  

#define PORTD_PD4 PORTDBIT.bit4  

#define PORTD_PD5 PORTDBIT.bit5  

#define PORTD_PD6 PORTDBIT.bit6  

#define PORTD_PD7 PORTDBIT.bit7  

//**********************  

#define DDRA_DDRA0 DDRABIT.bit0  

#define DDRA_DDRA1 DDRABIT.bit1  

#define DDRA_DDRA2 DDRABIT.bit2  

#define DDRA_DDRA3 DDRABIT.bit3  

#define DDRA_DDRA4 DDRABIT.bit4  

#define DDRA_DDRA5 DDRABIT.bit5  

#define DDRA_DDRA6 DDRABIT.bit6  

#define DDRA_DDRA7 DDRABIT.bit7  

#define DDRB_DDRB0 DDRBBIT.bit0  

#define DDRB_DDRB1 DDRBBIT.bit1  

#define DDRB_DDRB2 DDRBBIT.bit2  

#define DDRB_DDRB3 DDRBBIT.bit3  

#define DDRB_DDRB4 DDRBBIT.bit4  

#define DDRB_DDRB5 DDRBBIT.bit5  

#define DDRB_DDRB6 DDRBBIT.bit6  

#define DDRB_DDRB7 DDRBBIT.bit7  

#define DDRC_DDRC0 DDRCBIT.bit0  

#define DDRC_DDRC1 DDRCBIT.bit1  

#define DDRC_DDRC2 DDRCBIT.bit2  

#define DDRC_DDRC3 DDRCBIT.bit3  

#define DDRC_DDRC4 DDRCBIT.bit4  

#define DDRC_DDRC5 DDRCBIT.bit5  

#define DDRC_DDRC6 DDRCBIT.bit6  

#define DDRC_DDRC7 DDRCBIT.bit7  

#define DDRD_DDRD0 DDRDBIT.bit0  

#define DDRD_DDRD1 DDRDBIT.bit1  

#define DDRD_DDRD2 DDRDBIT.bit2  

#define DDRD_DDRD3 DDRDBIT.bit3  

#define DDRD_DDRD4 DDRDBIT.bit4  

#define DDRD_DDRD5 DDRDBIT.bit5  

#define DDRD_DDRD6 DDRDBIT.bit6  

#define DDRD_DDRD7 DDRDBIT.bit7  

//*****************  

#define PINA_PA0 PINABIT.bit0  

#define PINA_PA1 PINABIT.bit1  

#define PINA_PA2 PINABIT.bit2  

#define PINA_PA3 PINABIT.bit3  

#define PINA_PA4 PINABIT.bit4  

#define PINA_PA5 PINABIT.bit5  

#define PINA_PA6 PINABIT.bit6  

#define PINA_PA7 PINABIT.bit7  

#define PINB_PB0 PINBBIT.bit0  

#define PINB_PB1 PINBBIT.bit1  

#define PINB_PB2 PINBBIT.bit2  

#define PINB_PB3 PINBBIT.bit3  

#define PINB_PB4 PINBBIT.bit4  

#define PINB_PB5 PINBBIT.bit5  

#define PINB_PB6 PINBBIT.bit6  

#define PINB_PB7 PINBBIT.bit7  

#define PINC_PC0 PINCBIT.bit0  

#define PINC_PC1 PINCBIT.bit1  

#define PINC_PC2 PINCBIT.bit2  

#define PINC_PC3 PINCBIT.bit3  

#define PINC_PC4 PINCBIT.bit4  

#define PINC_PC5 PINCBIT.bit5  

#define PINC_PC6 PINCBIT.bit6  

#define PINC_PC7 PINCBIT.bit7  

#define PIND_PD0 PINDBIT.bit0  

#define PIND_PD1 PINDBIT.bit1  

#define PIND_PD2 PINDBIT.bit2  

#define PIND_PD3 PINDBIT.bit3  

#define PIND_PD4 PINDBIT.bit4  

#define PIND_PD5 PINDBIT.bit5  

#define PIND_PD6 PINDBIT.bit6  

#define PIND_PD7 PINDBIT.bit7  

#endif