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      1. 專注電子技術學習與研究
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        C52通用的頭文件REG52.H詳解

        作者:未知   來源:本站原創   點擊數:  更新時間:2014年08月08日   【字體:

        #ifndef __REG52_H__
        #define __REG52_H__

         

                //特殊功能寄存器的定義   地址均為字節地址,51單片機用的地址一般都為字節地址
        sfr P0    = 0x80;
        sfr P1    = 0x90;
        sfr P2    = 0xA0;
        sfr P3    = 0xB0;
        sfr PSW   = 0xD0;
        sfr ACC   = 0xE0;
        sfr B     = 0xF0;
        sfr SP    = 0x81;
        sfr DPL   = 0x82;
        sfr DPH   = 0x83;
        sfr PCON  = 0x87;
        sfr TCON  = 0x88;
        sfr TMOD  = 0x89;
        sfr TL0   = 0x8A;
        sfr TL1   = 0x8B;
        sfr TH0   = 0x8C;
        sfr TH1   = 0x8D;
        sfr IE    = 0xA8;
        sfr IP    = 0xB8;
        sfr SCON  = 0x98;
        sfr SBUF  = 0x99;


        sfr T2CON  = 0xC8;
        sfr RCAP2L = 0xCA;
        sfr RCAP2H = 0xCB;
        sfr TL2    = 0xCC;
        sfr TH2    = 0xCD;


                                       //PSW各特殊位的定義  ^為異或

        sbit CY    = PSW^7;         //地址即為0xD7,只是一個位地址映射,不能理解為實際的地址           
        sbit AC    = PSW^6;        //在reg51.h中寫的還是0xD7,在這里卻PSW^7,也是在提醒我們不要搞混吧,具體
        sbit F0    = PSW^5;         //內部怎么映射的估計可以不管它了吧
        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 INT1  = P3^3;
        sbit INT0  = P3^2;
        sbit TXD   = 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 TI    = 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義

        //sbit   特殊位的定義

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