/* Copyright (c) 2002, Marek Michalkiewicz
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

   * Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.

   * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.

   * Neither the name of the copyright holders nor the names of
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGE. */

/* $Id: iom8.h,v 1.9.2.2 2005/07/28 17:47:57 aesok Exp $ */

/* avr/iom8.h - definitions for ATmega8 */

#ifndef _AVR_IOM8_H_
#define _AVR_IOM8_H_ 1

/* This file should only be included from <avr/io.h>, never directly. */

#ifndef _AVR_IO_H_
#  error "Include <avr/io.h> instead of this file."
#endif

#ifndef _AVR_IOXXX_H_
#  define _AVR_IOXXX_H_ "iom8.h"
#else
#  error "Attempt to include more than one <avr/ioXXX.h> file."
#endif 

/* I/O registers */

/* TWI stands for "Two Wire Interface" or "TWI Was I2C(tm)" */
#define TWBR	_SFR_IO8(0x00)
#define TWSR	_SFR_IO8(0x01)
#define TWAR	_SFR_IO8(0x02)
#define TWDR	_SFR_IO8(0x03)

/* ADC */
#define ADCW	_SFR_IO16(0x04)
#ifndef __ASSEMBLER__
#define ADC	_SFR_IO16(0x04)
#endif
#define ADCL	_SFR_IO8(0x04)
#define ADCH	_SFR_IO8(0x05)
#define ADCSR	_SFR_IO8(0x06)
#define ADCSRA	_SFR_IO8(0x06)  /* Changed in 2486H-AVR-09/02 */
#define ADMUX	_SFR_IO8(0x07)

/* analog comparator */
#define ACSR	_SFR_IO8(0x08)

/* USART */
#define UBRRL	_SFR_IO8(0x09)
#define UCSRB	_SFR_IO8(0x0A)
#define UCSRA	_SFR_IO8(0x0B)
#define UDR	_SFR_IO8(0x0C)

/* SPI */
#define SPCR	_SFR_IO8(0x0D)
#define SPSR	_SFR_IO8(0x0E)
#define SPDR	_SFR_IO8(0x0F)

/* Port D */
#define PIND	_SFR_IO8(0x10)
#define DDRD	_SFR_IO8(0x11)
#define PORTD	_SFR_IO8(0x12)

/* Port C */
#define PINC	_SFR_IO8(0x13)
#define DDRC	_SFR_IO8(0x14)
#define PORTC	_SFR_IO8(0x15)

/* Port B */
#define PINB	_SFR_IO8(0x16)
#define DDRB	_SFR_IO8(0x17)
#define PORTB	_SFR_IO8(0x18)

/* EEPROM Control Register */
#define EECR	_SFR_IO8(0x1C)

/* EEPROM Data Register */
#define EEDR	_SFR_IO8(0x1D)

/* EEPROM Address Register */
#define EEAR	_SFR_IO16(0x1E)
#define EEARL	_SFR_IO8(0x1E)
#define EEARH	_SFR_IO8(0x1F)

#define UCSRC	_SFR_IO8(0x20)
#define UBRRH	_SFR_IO8(0x20)

#define WDTCR	_SFR_IO8(0x21)
#define ASSR	_SFR_IO8(0x22)

/* Timer 2 */
#define OCR2	_SFR_IO8(0x23)
#define TCNT2	_SFR_IO8(0x24)
#define TCCR2	_SFR_IO8(0x25)

/* Timer 1 */
#define ICR1	_SFR_IO16(0x26)
#define ICR1L	_SFR_IO8(0x26)
#define ICR1H	_SFR_IO8(0x27)
#define OCR1B	_SFR_IO16(0x28)
#define OCR1BL	_SFR_IO8(0x28)
#define OCR1BH	_SFR_IO8(0x29)
#define OCR1A	_SFR_IO16(0x2A)
#define OCR1AL	_SFR_IO8(0x2A)
#define OCR1AH	_SFR_IO8(0x2B)
#define TCNT1	_SFR_IO16(0x2C)
#define TCNT1L	_SFR_IO8(0x2C)
#define TCNT1H	_SFR_IO8(0x2D)
#define TCCR1B	_SFR_IO8(0x2E)
#define TCCR1A	_SFR_IO8(0x2F)

#define SFIOR	_SFR_IO8(0x30)

#define OSCCAL	_SFR_IO8(0x31)

/* Timer 0 */
#define TCNT0	_SFR_IO8(0x32)
#define TCCR0	_SFR_IO8(0x33)

#define MCUCSR	_SFR_IO8(0x34)
#define MCUCR	_SFR_IO8(0x35)

#define TWCR	_SFR_IO8(0x36)

#define SPMCR	_SFR_IO8(0x37)

#define TIFR	_SFR_IO8(0x38)
#define TIMSK	_SFR_IO8(0x39)

#define GIFR	_SFR_IO8(0x3A)
#define GIMSK	_SFR_IO8(0x3B)
#define GICR	_SFR_IO8(0x3B)   /* Changed in 2486H-AVR-09/02 */

/* 0x3C reserved (OCR0?) */

/* 0x3D..0x3E SP */

/* 0x3F SREG */

/* Interrupt vectors */

#define SIG_INTERRUPT0		_VECTOR(1)
#define SIG_INTERRUPT1		_VECTOR(2)
#define SIG_OUTPUT_COMPARE2	_VECTOR(3)
#define SIG_OVERFLOW2		_VECTOR(4)
#define SIG_INPUT_CAPTURE1	_VECTOR(5)
#define SIG_OUTPUT_COMPARE1A	_VECTOR(6)
#define SIG_OUTPUT_COMPARE1B	_VECTOR(7)
#define SIG_OVERFLOW1		_VECTOR(8)
#define SIG_OVERFLOW0		_VECTOR(9)
#define SIG_SPI			_VECTOR(10)
#define SIG_UART_RECV		_VECTOR(11)
#define SIG_UART_DATA		_VECTOR(12)
#define SIG_UART_TRANS		_VECTOR(13)
#define SIG_ADC			_VECTOR(14)
#define SIG_EEPROM_READY	_VECTOR(15)
#define SIG_COMPARATOR		_VECTOR(16)
#define SIG_2WIRE_SERIAL	_VECTOR(17)
#define SIG_SPM_READY		_VECTOR(18)

#define _VECTORS_SIZE 38

/* Bit numbers */

/* GIMSK / GICR */
#define INT1	7
#define INT0	6
#define IVSEL	1
#define IVCE	0

/* GIFR */
#define INTF1	7
#define INTF0	6

/* TIMSK */
#define OCIE2	7
#define TOIE2	6
#define TICIE1	5
#define OCIE1A	4
#define OCIE1B	3
#define TOIE1	2
/* bit 1 reserved (OCIE0?) */
#define TOIE0	0

/* TIFR */
#define OCF2	7
#define TOV2	6
#define ICF1	5
#define OCF1A	4
#define OCF1B	3
#define TOV1	2
/* bit 1 reserved (OCF0?) */
#define TOV0	0

/* SPMCR */
#define SPMIE	7
#define RWWSB	6
/* bit 5 reserved */
#define RWWSRE	4
#define BLBSET	3
#define PGWRT	2
#define PGERS	1
#define SPMEN	0

/* TWCR */
#define TWINT	7
#define TWEA	6
#define TWSTA	5
#define TWSTO	4
#define TWWC	3
#define TWEN	2
/* bit 1 reserved (TWI_TST?) */
#define TWIE	0

/* TWAR */
#define TWA6    7
#define TWA5    6
#define TWA4    5
#define TWA3    4
#define TWA2    3
#define TWA1    2
#define TWA0    1
#define TWGCE	0

/* TWSR */
#define TWS7	7
#define TWS6	6
#define TWS5	5
#define TWS4	4
#define TWS3	3
/* bit 2 reserved */
#define TWPS1	1
#define TWPS0	0

/* MCUCR */
#define SE	7
#define SM2	6
#define SM1	5
#define SM0	4
#define ISC11	3
#define ISC10	2
#define ISC01	1
#define ISC00	0

/* MCUCSR */
/* bits 7-4 reserved */
#define WDRF	3
#define BORF	2
#define EXTRF	1
#define PORF	0

/* 
   The ADHSM bit has been removed from all documentation, 
   as being not needed at all since the comparator has proven 
   to be fast enough even without feeding it more power.
*/

/* SFIOR */
/* bits 7-5 reserved */
#define ACME	3
#define PUD	2
#define PSR2	1
#define PSR10	0

/* TCCR0 */
/* bits 7-3 reserved */
#define CS02	2
#define CS01	1
#define CS00	0

/* TCCR2 */
#define FOC2	7
#define WGM20	6
#define COM21	5
#define COM20	4
#define WGM21	3
#define CS22	2
#define CS21	1
#define CS20	0

/* ASSR */
/* bits 7-4 reserved */
#define AS2	3
#define TCN2UB	2
#define OCR2UB	1
#define TCR2UB	0

/* TCCR1A */
#define COM1A1	7
#define COM1A0	6
#define COM1B1	5
#define COM1B0	4
#define FOC1A	3
#define FOC1B	2
#define WGM11	1
#define WGM10	0

/* TCCR1B */
#define ICNC1	7
#define ICES1	6
/* bit 5 reserved */
#define WGM13	4
#define WGM12	3
#define CS12	2
#define CS11	1
#define CS10	0

/* WDTCR */
/* bits 7-5 reserved */
#define WDCE	4
#define WDE	3
#define WDP2	2
#define WDP1	1
#define WDP0	0

/* UBRRH */
#define URSEL	7

/* UCSRC */
#define URSEL	7
#define UMSEL	6
#define UPM1	5
#define UPM0	4
#define USBS	3
#define UCSZ1	2
#define UCSZ0	1
#define UCPOL	0

/* PORTB */
#define PB7	7
#define PB6	6
#define PB5	5
#define PB4	4
#define PB3	3
#define PB2	2
#define PB1	1
#define PB0	0

/* DDRB */
#define DDB7	7
#define DDB6	6
#define DDB5	5
#define DDB4	4
#define DDB3	3
#define DDB2	2
#define DDB1	1
#define DDB0	0

/* PINB */
#define PINB7	7
#define PINB6	6
#define PINB5	5
#define PINB4	4
#define PINB3	3
#define PINB2	2
#define PINB1	1
#define PINB0	0

/* PORTC */
#define PC6	 6
#define PC5	 5
#define PC4	 4
#define PC3	 3
#define PC2	 2
#define PC1	 1
#define PC0	 0

/* DDRC */
#define DDC6	6
#define DDC5	5
#define DDC4	4
#define DDC3	3
#define DDC2	2
#define DDC1	1
#define DDC0	0

/* PINC */
#define PINC6	6
#define PINC5	5
#define PINC4	4
#define PINC3	3
#define PINC2	2
#define PINC1	1
#define PINC0	0

/* PORTD */
#define PD7	 7
#define PD6	 6
#define PD5	 5
#define PD4	 4
#define PD3	 3
#define PD2	 2
#define PD1	 1
#define PD0	 0

/* DDRD */
#define DDD7	7
#define DDD6	6
#define DDD5	5
#define DDD4	4
#define DDD3	3
#define DDD2	2
#define DDD1	1
#define DDD0	0

/* PIND */
#define PIND7	7
#define PIND6	6
#define PIND5	5
#define PIND4	4
#define PIND3	3
#define PIND2	2
#define PIND1	1
#define PIND0	0

/* SPSR */
#define SPIF	7
#define WCOL	6
#define SPI2X	0

/* SPCR */
#define SPIE	7
#define SPE	6
#define DORD	5
#define MSTR	4
#define CPOL	3
#define CPHA	2
#define SPR1	1
#define SPR0	0

/* UCSRA */
#define RXC	7
#define TXC	6
#define UDRE	5
#define FE	4
#define DOR	3
#define PE	2
#define U2X	1
#define MPCM	0

/* UCSRB */
#define RXCIE	7
#define TXCIE	6
#define UDRIE	5
#define RXEN	4
#define	TXEN	3
#define UCSZ2	2
#define RXB8	1
#define TXB8	0

/* ACSR */
#define ACD	7
#define ACBG	6
#define ACO	5
#define ACI	4
#define ACIE	3
#define ACIC	2
#define ACIS1	1
#define ACIS0	0

/* ADCSR / ADCSRA */
#define ADEN	7
#define ADSC	6
#define ADFR	5
#define ADIF	4
#define ADIE	3
#define ADPS2	2
#define ADPS1	1
#define ADPS0	0

/* ADMUX */
#define REFS1	7
#define REFS0	6
#define ADLAR	5
/* bit 4 reserved */
#define MUX3	3
#define MUX2	2
#define MUX1	1
#define MUX0	0

/* EEPROM Control Register */
#define EERIE   3
#define EEMWE   2
#define EEWE    1
#define EERE    0

/* Constants */
#define SPM_PAGESIZE 64
#define RAMEND		0x45F
#define XRAMEND		0x45F
#define E2END		0x1FF
#define FLASHEND	0x1FFF

#endif /* _AVR_IOM8_H_ */
