at89s52.h

C code for using 8051 to control philiphs I2C FM tuner (use keil c compiler)

#ifndef __AT89S52_H__
#define __AT89S52_H__

#define Sfr(x, y)       sfr x = y
#define Sbit(x, y, z)   sbit x = y^z


/* BYTE Register */

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);

/* BIT Register */

/* PSW */
Sbit (CY     , 0xD0, 7);
Sbit (AC     , 0xD0, 6);
Sbit (F0     , 0xD0, 5);
Sbit (RS1    , 0xD0, 4);
Sbit (RS0    , 0xD0, 3);
Sbit (OV     , 0xD0, 2);
Sbit (F1     , 0xD0, 1);
Sbit (P      , 0xD0, 0);

/* TCON */
Sbit (TF1    , 0x88, 7);
Sbit (TR1    , 0x88, 6);
Sbit (TF0    , 0x88, 5);
Sbit (TR0    , 0x88, 4);
Sbit (IE1    , 0x88, 3);
Sbit (IT1    , 0x88, 2);
Sbit (IE0    , 0x88, 1);
Sbit (IT0    , 0x88, 0);

/* IE */
Sbit (EA     , 0xA8, 7);
Sbit (ES     , 0xA8, 4);
Sbit (ET1    , 0xA8, 3);
Sbit (EX1    , 0xA8, 2);
Sbit (ET0    , 0xA8, 1);
Sbit (EX0    , 0xA8, 0);

/* IP */
Sbit (PS     , 0xB8, 4);
Sbit (PT1    , 0xB8, 3);
Sbit (PX1    , 0xB8, 2);
Sbit (PT0    , 0xB8, 1);
Sbit (PX0    , 0xB8, 0);

/* PORTS */

/* P0 */
Sbit (P0_7   , 0x80, 7);
Sbit (P0_6   , 0x80, 6);
Sbit (P0_5   , 0x80, 5);
Sbit (P0_4   , 0x80, 4);
Sbit (P0_3   , 0x80, 3);
Sbit (P0_2   , 0x80, 2);
Sbit (P0_1   , 0x80, 1);
Sbit (P0_0   , 0x80, 0);

/* P1 */
Sbit (P1_7   , 0x90, 7);
Sbit (P1_6   , 0x90, 6);
Sbit (P1_5   , 0x90, 5);
Sbit (P1_4   , 0x90, 4);
Sbit (P1_3   , 0x90, 3);
Sbit (P1_2   , 0x90, 2);
Sbit (P1_1   , 0x90, 1);
Sbit (P1_0   , 0x90, 0);

/* P2 */
Sbit (P2_7   , 0xA0, 7);
Sbit (P2_6   , 0xA0, 6);
Sbit (P2_5   , 0xA0, 5);
Sbit (P2_4   , 0xA0, 4);
Sbit (P2_3   , 0xA0, 3);
Sbit (P2_2   , 0xA0, 2);
Sbit (P2_1   , 0xA0, 1);
Sbit (P2_0   , 0xA0, 0);

/* P3 */
Sbit (P3_7   , 0xB0, 7);
Sbit (P3_6   , 0xB0, 6);
Sbit (P3_5   , 0xB0, 5);
Sbit (P3_4   , 0xB0, 4);
Sbit (P3_3   , 0xB0, 3);
Sbit (P3_2   , 0xB0, 2);
Sbit (P3_1   , 0xB0, 1);
Sbit (P3_0   , 0xB0, 0);

Sbit (RD     , 0xB0, 7);
Sbit (WR     , 0xB0, 6);
Sbit (T1     , 0xB0, 5);
Sbit (T0     , 0xB0, 4);
Sbit (INT1   , 0xB0, 3);
Sbit (INT0   , 0xB0, 2);
Sbit (TXD    , 0xB0, 1);
Sbit (RXD    , 0xB0, 0);

/* SCON */
Sbit (SM0    , 0x98, 7);
Sbit (FE     , 0x98, 7);
Sbit (SM1    , 0x98, 6);
Sbit (SM2    , 0x98, 5);
Sbit (REN    , 0x98, 4);
Sbit (TB8    , 0x98, 3);
Sbit (RB8    , 0x98, 2);
Sbit (TI     , 0x98, 1);
Sbit (RI     , 0x98, 0);

#endif