C語言位域操作方法（精編版）

1、c 語言位域操作方法#include #ifndef _use_advancedportcommand # define _use_advancedportcommand # define painuse 0 xff # define pbinuse 0 xff # define pcinuse 0 xff # define pdinuse 0 xff # define peinuse 0 x00 # define pfinuse 0 x00 # define pginuse 0 x00 # define phinuse 0 x00 # define piinuse 0 x00 # defin

2、e pjinuse 0 x00 # define pkinuse 0 x00 # define plinuse 0 x00 # define pminuse 0 x00 # define pninuse 0 x00 # define poinuse 0 x00 # define ppinuse 0 x00 # define pqinuse 0 x00 # define prinuse 0 x00 # define psinuse 0 x00 # define ptinuse 0 x00 # define puinuse 0 x00 # define pvinuse 0 x00 # define

3、 pwinuse 0 x00 # define pxinuse 0 x00 # define pyinuse 0 x00 # define pzinuse 0 x00 # define read_pa0 (pina7) # define read_pa1 (pina7) # define read_pa2 (pina7) # define read_pa3 (pina7) # define read_pa4 (pina7) # define read_pa5 (pina7) # define read_pa6 (pina7) # define read_pa7 (pina7) # define

4、 read_pb0 (pinb7) # define read_pb1 (pinb7) # define read_pb2 (pinb7) # define read_pb3 (pinb7) # define read_pb4 (pinb7) # define read_pb5 (pinb7) # define read_pb6 (pinb7) # define read_pb7 (pinb7) # define read_pc0 (pinc7) # define read_pc1 (pinc7) # define read_pc2 (pinc7) # define read_pc3 (pin

5、c7) # define read_pc4 (pinc7) # define read_pc5 (pinc7) # define read_pc6 (pinc7) # define read_pc7 (pinc7) # define read_pd0 (pind7) # define read_pd1 (pind7) # define read_pd2 (pind7) # define read_pd3 (pind7) # define read_pd4 (pind7) # define read_pd5 (pind7) # define read_pd6 (pind7) # define r

6、ead_pd7 (pind7) typedef struct byte_bit unsigned bit0:1; unsigned bit1:1; unsigned bit2:1; unsigned bit3:1; unsigned bit4:1; unsigned bit5:1; unsigned bit6:1; unsigned bit7:1; portbit; # define porta_bit (*(volatile portbit *)porta) # define portb_bit (*(volatile portbit *)portb) # define portc_bit

7、(*(volatile portbit *)portc) # define portd_bit (*(volatile portbit *)portd) # define ddra_bit (*(volatile portbit *)ddra) # define ddrb_bit (*(volatile portbit *)ddrb) # define ddrc_bit (*(volatile portbit *)ddrc) # define ddrd_bit (*(volatile portbit *)ddrd) # define ddr_pa0 ddra_bit.bit0 # define

8、 ddr_pa1 ddra_bit.bit1 # define ddr_pa2 ddra_bit.bit2 # define ddr_pa3 ddra_bit.bit3 # define ddr_pa4 ddra_bit.bit4 # define ddr_pa5 ddra_bit.bit5 # define ddr_pa6 ddra_bit.bit6 # define ddr_pa7 ddra_bit.bit7 # define ddr_pb0 ddrb_bit.bit0 # define ddr_pb1 ddrb_bit.bit1 # define ddr_pb2 ddrb_bit.bit

9、2 # define ddr_pb3 ddrb_bit.bit3 # define ddr_pb4 ddrb_bit.bit4 # define ddr_pb5 ddrb_bit.bit5 # define ddr_pb6 ddrb_bit.bit6 # define ddr_pb7 ddrb_bit.bit7 # define ddr_pc0 ddrc_bit.bit0 # define ddr_pc1 ddrc_bit.bit1 # define ddr_pc2 ddrc_bit.bit2 # define ddr_pc3 ddrc_bit.bit3 # define ddr_pc4 dd

10、rc_bit.bit4 # define ddr_pc5 ddrc_bit.bit5 # define ddr_pc6 ddrc_bit.bit6 # define ddr_pc7 ddrc_bit.bit7 # define ddr_pd0 ddrd_bit.bit0 # define ddr_pd1 ddrd_bit.bit1 # define ddr_pd2 ddrd_bit.bit2 # define ddr_pd3 ddrd_bit.bit3 # define ddr_pd4 ddrd_bit.bit4 # define ddr_pd5 ddrd_bit.bit5 # define

11、ddr_pd6 ddrd_bit.bit6 # define ddr_pd7 ddrd_bit.bit7 # define _pa0 porta_bit.bit0 # define _pa1 porta_bit.bit1 # define _pa2 porta_bit.bit2 # define _pa3 porta_bit.bit3 # define _pa4 porta_bit.bit4 # define _pa5 porta_bit.bit5 # define _pa6 porta_bit.bit6 # define _pa7 porta_bit.bit7 # define _pb0 p

12、ortb_bit.bit0 # define _pb1 portb_bit.bit1 # define _pb2 portb_bit.bit2 # define _pb3 portb_bit.bit3 # define _pb4 portb_bit.bit4 # define _pb5 portb_bit.bit5 # define _pb6 portb_bit.bit6 # define _pb7 portb_bit.bit7 # define _pc0 portc_bit.bit0 # define _pc1 portc_bit.bit1 # define _pc2 portc_bit.b

13、it2 # define _pc3 portc_bit.bit3 # define _pc4 portc_bit.bit4 # define _pc5 portc_bit.bit5 # define _pc6 portc_bit.bit6 # define _pc7 portc_bit.bit7 # define _pd0 portd_bit.bit0 # define _pd1 portd_bit.bit1 # define _pd2 portd_bit.bit2 # define _pd3 portd_bit.bit3 # define _pd4 portd_bit.bit4 # defi

14、ne _pd5 portd_bit.bit5 # define _pd6 portd_bit.bit6 # define _pd7 portd_bit.bit7 # define portdefine(); #endif 2 第二種位操作方法 typedef union unsigned char value; struct unsigned int bit0:1; unsigned int bit1:1; unsigned int bit2:1; unsigned int bit3:1; unsigned int bit4:1; unsigned int bit5:1; unsigned int bit6:1; unsigned int bit7:1; bit_field; port; 用法：聲明： port pa; 位操作：pa.bit_field.b