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io2323.h

Go to the documentation of this file.

/*            - io2323.h -

   This file #defines the internal register addresses for AT90S2323.
*/

#ifndef __IO2323
#define __IO2323 1


/*==========================*/
/* Predefined SFR Addresses */
/*==========================*/

/* Input Pins, Port B */
#define PINB     0x16

/* Data Direction Register, Port B */
#define DDRB     0x17

/* Data Register, Port B */
#define PORTB     0x18

/* EEPROM Control Register */
#define EECR     0x1C

/* EEPROM Data Register */
#define EEDR     0x1D

/* EEPROM Address Register Low */
#define EEARL    0x1E

/* Watchdog Timer Control Register */
#define WDTCR     0x21

/* Timer/Counter 0 */
#define TCNT0     0x32

/* Timer/Counter 0 Control Register */
#define TCCR0     0x33

/* MCU Status Register */
#define MCUSR     0x34

/* MCU general Control Register */
#define MCUCR     0x35

/* Timer/Counter Interrupt Flag register */
#define TIFR     0x38

/* Timer/Counter Interrupt MaSK register */
#define TIMSK     0x39

/* General Interrupt Flag register */
#define GIFR     0x3A

/* General Interrupt MaSK register */
#define GIMSK     0x3B

/* Stack Pointer */
#define SPL     0x3D

/* Status REGister */
#define SREG    0x3F


/*==============================*/
/* Interrupt Vector Definitions */
/*==============================*/

/* NB! vectors are specified as byte addresses */

#define    RESET_vect           (0x00)
#define    INT0_vect            (0x02)
#define    TIMER0_OVF_vect     (0x04)

#define INT_VECT_SIZE (0x06)

/*
   The Register Bit names are represented by their bit number (0-7).
 */

/* General Interrupt MaSK register */
#define    INT0    6
#define    INTF0   6

/* General Interrupt Flag Register */
#define    TOIE0   1
#define    TOV0    1

/* MCU general Control Register */
#define    SE      5
#define    SM      4
#define    ISC01   1
#define    ISC00   0

/* Timer/Counter 0 Control Register */
#define    CS02    2
#define    CS01    1
#define    CS00    0

/* Watchdog Timer Control Register */
#define    WDTOE   4
#define    WDE     3
#define    WDP2    2
#define    WDP1    1
#define    WDP0    0

/* EEPROM Control Register */
#define    EEMWE   2
#define    EEWE    1
#define    EERE    0

/*
   PB2 = SCK/T0
   PB1 = MISO/INT0
   PB0 = MOSI
 */

/* Data Register, Port B */
#define    PB2     2
#define    PB1     1
#define    PB0     0

/* Data Direction Register, Port B */
#define    DDB2    2
#define    DDB1    1
#define    DDB0    0

/* Input Pins, Port B */
#define    PINB2   2
#define    PINB1   1
#define    PINB0   0

/* Pointer definition   */
#define    XL     r26
#define    XH     r27
#define    YL     r28
#define    YH     r29
#define    ZL     r30
#define    ZH     r31

/* Constants */
#define    RAMEND    0xDF
#define    XRAMEND   0xDF
#define    E2END     0x7F
#define    FLASHEND  0x07FF

#endif

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