基于单片机的叮咚门铃(8)

/* P3 */ 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;

/* SCON */

sbit SM0 = SCON^7; // alternatively \sbit FE = 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; /* P1 */ /* PCA

sbit CEX4 = P1^7; sbit CEX3 = P1^6; sbit CEX2 = P1^5; sbit CEX1 = P1^4; sbit CEX0 = P1^3; sbit ECI = P1^2; */

sbit T2EX = P1^1; sbit T2 = P1^0;

/* T2CON */ 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;

/* CCON */ /* PCA

sbit CF = CCON^7; sbit CR = CCON^6;

sbit CCF4 = CCON^4; sbit CCF3 = CCON^3; sbit CCF2 = CCON^2; sbit CCF1 = CCON^1; sbit CCF0 = CCON^0; */ #endif

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