IAR-C有着强大的软件仿真功能,但其中的寄存器位操作定义却十分烦琐,并且编译后生成的ASM代码冗余较多,针对该问题,版主自已定义一个位操作定义的方法,初学者可参考定义,并且该种方法可应用于所有寄存器位操作定义.
共实现置位--Set_Bit, 清位--Clr_Bit, 取反位Com_Bit, 测试位Test_Bit四种位操作功能,
并且每条位操作定义仅需一条3字节的ASM指令序列即可,简便直接.

//*****************************************************
//P00位操作定义
#define Set_P00 (P0 = P0 | 0x1)
#define Clr_P00 (P0 = P0 & ~0x1)
#define Com_P00 (P0 = P0 ^ 0x1)
#define Test_P00 (P0 & 0x1)
//P01位操作定义
#define Set_P01 (P0 = P0 | 0x2)
#define Clr_P01 (P0 = P0 & ~0x2)
#define Com_P01 (P0 = P0 ^ 0x2)
#define Test_P01 (P0 & 0x2)
//P02位操作定义
#define Set_P02 (P0 = P0 | 0x4)
#define Clr_P02 (P0 = P0 & ~0x4)
#define Com_P02 (P0 = P0 ^ 0x4)
#define Test_P02 (P0 & 0x4)
//P03位操作定义
#define Set_P03 (P0 = P0 | 0x8)
#define Clr_P03 (P0 = P0 & ~0x8)
#define Com_P03 (P0 = P0 ^ 0x8)
#define Test_P03 (P0 & 0x8)
//P04位操作定义
#define Set_P04 (P0 = P0 | 0x10)
#define Clr_P04 (P0 = P0 & ~0x10)
#define Com_P04 (P0 = P0 ^ 0x10)
#define Test_P04 (P0 & 0x10)
//P05位操作定义
#define Set_P05 (P0 = P0 | 0x20)
#define Clr_P05 (P0 = P0 & ~0x20)
#define Com_P05 (P0 = P0 ^ 0x20)
#define Test_P05 (P0 & 0x20)
//P06位操作定义
#define Set_P06 (P0 = P0 | 0x40)
#define Clr_P06 (P0 = P0 & ~0x40)
#define Com_P06 (P0 = P0 ^ 0x40)
#define Test_P06 (P0 & 0x40)
//P07位操作定义
#define Set_P07 (P0 = P0 | 0x80)
#define Clr_P07 (P0 = P0 & ~0x80)
#define Com_P07 (P0 = P0 ^ 0x80)
#define Test_P07 (P0 & 0x80)
//*************************************
//P1端口操作位定义
//P10位操作定义
#define Set_P10 (P1 = P1 | 0x1)
#define Clr_P10 (P1 = P1 & ~0x1)
#define Com_P10 (P1 = P1 ^ 0x1)
#define Test_P10 (P1 & 0x1)
//P11位操作定义
#define Set_P11 (P1 = P1 | 0x2)
#define Clr_P11 (P1 = P1 & ~0x2)
#define Com_P11 (P1 = P1 ^ 0x2)
#define Test_P11 (P1 & 0x2)
//P12位操作定义
#define Set_P12 (P1 = P1 | 0x4)
#define Clr_P12 (P1 = P1 & ~0x4)
#define Com_P12 (P1 = P1 ^ 0x4)
#define Test_P12 (P1 & 0x4)
//P13位操作定义
#define Set_P13 (P1 = P1 | 0x8)
#define Clr_P13 (P1 = P1 & ~0x8)
#define Com_P13 (P1 = P1 ^ 0x8)
#define Test_P13 (P1 & 0x8)
//P14位操作定义
#define Set_P14 (P1 = P1 | 0x10)
#define Clr_P14 (P1 = P1 & ~0x10)
#define Com_P14 (P1 = P1 ^ 0x10)
#define Test_P14 (P1 & 0x10)
//P15位操作定义
#define Set_P15 (P1 = P1 | 0x20)
#define Clr_P15 (P1 = P1 & ~0x20)
#define Com_P15 (P1 = P1 ^ 0x20)
#define Test_P15 (P1 & 0x20)
//P16位操作定义
#define Set_P16 (P1 = P1 | 0x40)
#define Clr_P16 (P1 = P1 & ~0x40)
#define Com_P16 (P1 = P1 ^ 0x40)
#define Test_P16 (P1 & 0x40)
//P17位操作定义
#define Set_P17 (P1 = P1 | 0x80)
#define Clr_P17 (P1 = P1 & ~0x80)
#define Com_P17 (P1 = P1 ^ 0x80)
#define Test_P17 (P1 & 0x80)

//*************************************
//P2端口操作位定义
//P20位操作定义
#define Set_P20 (P2 = P2 | 0x1)
#define Clr_P20 (P2 = P2 & ~0x1)
#define Com_P20 (P2 = P2 ^ 0x1)
#define Test_P20 (P2 & 0x1)
//P21位操作定义
#define Set_P21 (P2 = P2 | 0x2)
#define Clr_P21 (P2 = P2 & ~0x2)
#define Com_P21 (P2 = P2 ^ 0x2)
#define Test_P21 (P2 & 0x2)
//P22位操作定义
#define Set_P22 (P2 = P2 | 0x4)
#define Clr_P22 (P2 = P2 & ~0x4)
#define Com_P22 (P2 = P2 ^ 0x4)
#define Test_P22 (P2 & 0x4)
//P23位操作定义
#define Set_P23 (P2 = P2 | 0x8)
#define Clr_P23 (P2 = P2 & ~0x8)
#define Com_P23 (P2 = P2 ^ 0x8)
#define Test_P23 (P2 & 0x8)
//P24位操作定义
#define Set_P24 (P2 = P2 | 0x10)
#define Clr_P24 (P2 = P2 & ~0x10)
#define Com_P24 (P2 = P2 ^ 0x10)
#define Test_P24 (P2 & 0x10)
//P25位操作定义
#define Set_P25 (P2 = P2 | 0x20)
#define Clr_P25 (P2 = P2 & ~0x20)
#define Com_P25 (P2 = P2 ^ 0x20)
#define Test_P25 (P2 & 0x20)
//P26位操作定义
#define Set_P26 (P2 = P2 | 0x40)
#define Clr_P26 (P2 = P2 & ~0x40)
#define Com_P26 (P2 = P2 ^ 0x40)
#define Test_P26 (P2 & 0x40)
//P27位操作定义
#define Set_P27 (P2 = P2 | 0x80)
#define Clr_P27 (P2 = P2 & ~0x80)
#define Com_P27 (P2 = P2 ^ 0x80)
#define Test_P27 (P2 & 0x80)

//*************************************
//P3端口操作位定义
//P30位操作定义
#define Set_P30 (P3 = P3 | 0x1)
#define Clr_P30 (P3 = P3 & ~0x1)
#define Com_P30 (P3 = P3 ^ 0x1)
#define Test_P30 (P3 & 0x1)
//P31位操作定义
#define Set_P31 (P3 = P3 | 0x2)
#define Clr_P31 (P3 = P3 & ~0x2)
#define Com_P31 (P3 = P3 ^ 0x2)
#define Test_P31 (P3 & 0x2)
//P32位操作定义
#define Set_P32 (P3 = P3 | 0x4)
#define Clr_P32 (P3 = P3 & ~0x4)
#define Com_P32 (P3 = P3 ^ 0x4)
#define Test_P32 (P3 & 0x4)
//P33位操作定义
#define Set_P33 (P3 = P3 | 0x8)
#define Clr_P33 (P3 = P3 & ~0x8)
#define Com_P33 (P3 = P3 ^ 0x8)
#define Test_P33 (P3 & 0x8)
//P34位操作定义
#define Set_P34 (P3 = P3 | 0x10)
#define Clr_P34 (P3 = P3 & ~0x10)
#define Com_P34 (P3 = P3 ^ 0x10)
#define Test_P34 (P3 & 0x10)
//P35位操作定义
#define Set_P35 (P3 = P3 | 0x20)
#define Clr_P35 (P3 = P3 & ~0x20)
#define Com_P35 (P3 = P3 ^ 0x20)
#define Test_P35 (P3 & 0x20)
//P36位操作定义
#define Set_P36 (P3 = P3 | 0x40)
#define Clr_P36 (P3 = P3 & ~0x40)
#define Com_P36 (P3 = P3 ^ 0x40)
#define Test_P36 (P3 & 0x40)
//P37位操作定义
#define Set_P37 (P3 = P3 | 0x80)
#define Clr_P37 (P3 = P3 & ~0x80)
#define Com_P37 (P3 = P3 ^ 0x80)
#define Test_P37 (P3 & 0x80)

//*************************************
//P4端口操作位定义
//P40位操作定义
#define Set_P40 (P4 = P4 | 0x1)
#define Clr_P40 (P4 = P4 & ~0x1)
#define Com_P40 (P4 = P4 ^ 0x1)
#define Test_P40 (P4 & 0x1)
//P41位操作定义
#define Set_P41 (P4 = P4 | 0x2)
#define Clr_P41 (P4 = P4 & ~0x2)
#define Com_P41 (P4 = P4 ^ 0x2)
#define Test_P41 (P4 & 0x2)
//P42位操作定义
#define Set_P42 (P4 = P4 | 0x4)
#define Clr_P42 (P4 = P4 & ~0x4)
#define Com_P42 (P4 = P4 ^ 0x4)
#define Test_P42 (P4 & 0x4)
//P43位操作定义
#define Set_P43 (P4 = P4 | 0x8)
#define Clr_P43 (P4 = P4 & ~0x8)
#define Com_P43 (P4 = P4 ^ 0x8)
#define Test_P43 (P4 & 0x8)
//P44位操作定义
#define Set_P44 (P4 = P4 | 0x10)
#define Clr_P44 (P4 = P4 & ~0x10)
#define Com_P44 (P4 = P4 ^ 0x10)
#define Test_P44 (P4 & 0x10)
//P45位操作定义
#define Set_P45 (P4 = P4 | 0x20)
#define Clr_P45 (P4 = P4 & ~0x20)
#define Com_P45 (P4 = P4 ^ 0x20)
#define Test_P45 (P4 & 0x20)
//P46位操作定义
#define Set_P46 (P4 = P4 | 0x40)
#define Clr_P46 (P4 = P4 & ~0x40)
#define Com_P46 (P4 = P4 ^ 0x40)
#define Test_P46 (P4 & 0x40)
//P47位操作定义
#define Set_P47 (P4 = P4 | 0x80)
#define Clr_P47 (P4 = P4 & ~0x80)
#define Com_P47 (P4 = P4 ^ 0x80)
#define Test_P47 (P4 & 0x80)

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