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C52通用的头文件REG52.H详解

#ifndef __REG52_H__ #define __REG52_H__

//特殊功能寄存器的定义 地址均为字节地址,51单片机用的地址一般都为字节地址 sfr P0 = 0x80; sfr P1 = 0x90; sfr P2 = 0xA0; sfr P3 = 0xB0; sfr PSW = 0xD0; sfr ACC = 0xE0; sfr B = 0xF0; sfr = 0x81; sfr L = 0x82; sfr DPH = 0x83; sfr PC = 0x87; sfr TCON = 0x88; sfr TMOD = 0x89; sfr TL0 = 0x8A; sfr = 0x8B; sfr TH0 = 0x8C; sfr TH1 = 0x8D; sfr IE = 0xA8; sfr IP = 0xB8; sfr SCON = 0x98; sfr SBUF = 0x99;

sfr T2CON = 0xC8; sfr P2L = 0xCA; sfr RCAP2H = 0xCB; sfr TL2 = 0xCC; sfr TH2 = 0xCD;

//PSW各特殊位的定义 ^为异或 sbit CY = PSW^7;//地址即为0xD7,只是一个位地址映射,不能理解为实际的地址 sbit AC = PSW^6; //在reg51.h中写的还是0xD7,在这里却PSW^7,也是在提醒我们不要搞混吧,具体 sbit F0 = PSW^5; //内部怎么映射的估计可以不管它了吧 sbit RS1 = PSW^4; sbit RS0 = PSW^3; sbit OV = PSW^2; sbit P = PSW^0; //8052 only

sbit TF1 = TCON^7; sbit TR1 = TCON^6; sbit TF0 = TCON^5; sbit TR0 = TCON^4; sbit IE1 = TCON^3; sbit IT1 = TCON^2; sbit IE0 = TCON^1; sbit IT0 = TCON^0;

sbit EA = IE^7; sbit ET2 = IE^5; //8052 only sbit ES = IE^4; sbit ET1 = IE^3; sbit EX1 = IE^2; sbit ET0 = IE^1; sbit EX0 = IE^0;

sbit PT2 = IP^5; sbit PS = IP^4; sbit PT1 = IP^3; sbit PX1 = IP^2; sbit PT0 = IP^1; sbit PX0 = IP^0;

sbit RD = P3^7; sbit WR = P3^6; sbit T1 = P3^5; sbit T0 = P3^4; sbit I1 = P3^3; sbit INT0 = P3^2; sbit T = P3^1; sbit RXD = P3^0;

sbit SM0 = SCON^7; sbit SM1 = SCON^6; sbit SM2 = SCON^5; sbit REN = SCON^4; sbit TB8 = SCON^3; sbit RB8 = SCON^2; sbit = SCON^1; sbit RI = SCON^0;

sbit T2EX = P1^1; // 8052 only sbit T2 = P1^0; // 8052 only sbit TF2 = T2CON^7; sbit EXF2 = T2CON^6; sbit RCLK = T2CON^5; sbit TCLK = T2CON^4; sbit EXEN2 = T2CON^3; sbit TR2 = T2CON^2; sbit C_T2 = T2CON^1; sbit CP_RL2 = T2CON^0;

#endif

//sfr 特殊功能寄存器的定义

//sbit 特殊位的定义

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