IAR-C中实现IO端口直接位定义操作的一个示例资料下载

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)