Tooltron

/*

 * FreeModbus Libary: AVR Port

 * Copyright (C) 2006 Christian Walter <wolti@sil.at>

 *   - Initial version + ATmega168 support

 * Modfications Copyright (C) 2006 Tran Minh Hoang:

 *   - ATmega8, ATmega16, ATmega32 support

 *   - RS485 support for DS75176

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *

 * File: $Id: port.h,v 1.6 2006/09/17 16:45:52 wolti Exp $

 */

#ifndef _PORT_H

#define _PORT_H

/* ----------------------- Platform includes --------------------------------*/

#include <avr/io.h>

#include <avr/interrupt.h>

/* ----------------------- Defines ------------------------------------------*/

#define        INLINE                      inline

#define PR_BEGIN_EXTERN_C           extern "C" {

#define        PR_END_EXTERN_C             }

#define ENTER_CRITICAL_SECTION( )   cli()

#define EXIT_CRITICAL_SECTION( )    sei()

#define assert( x )

typedef char    BOOL;

typedef unsigned char UCHAR;

typedef char    CHAR;

typedef unsigned short USHORT;

typedef short   SHORT;

typedef unsigned long ULONG;

typedef long    LONG;

#ifndef TRUE

#define TRUE            1

#endif

#ifndef FALSE

#define FALSE           0

#endif

/* ----------------------- AVR platform specifics ---------------------------*/

#if defined (__AVR_ATmega168__)

#define UCSRB           UCSR0B

#define TXEN            TXEN0

#define RXEN            RXEN0

#define RXCIE           RXCIE0

#define TXCIE           TXCIE0

#define UDRE            UDRE0

#define UBRR            UBRR0

#define UCSRC           UCSR0C

#define UPM1            UPM01

#define UPM0            UPM00

#define UCSZ0           UCSZ00

#define UCSZ1           UCSZ01

#define UDR             UDR0

#define SIG_UART_TRANS  SIG_USART_TRANS

#elif defined (__AVR_ATmega169__)

#define SIG_UART_TRANS  SIG_USART_TRANS

#elif defined (__AVR_ATmega8__)

#define UBRR            UBRRL

#define TCCR1C          TCCR1A  /* dummy */

#define TIMSK1          TIMSK

#define TIFR1           TIFR

#define SIG_USART_DATA  SIG_UART_DATA

#define SIG_USART_RECV  SIG_UART_RECV

#elif defined (__AVR_ATmega16__)

#define UBRR            UBRRL

#define TCCR1C          TCCR1A  /* dummy */

#define TIMSK1          TIMSK

#define TIFR1           TIFR

#elif defined (__AVR_ATmega32__)

#define UBRR            UBRRL

#define TCCR1C          TCCR1A  /* dummy */

#define TIMSK1          TIMSK

#define TIFR1           TIFR

#elif defined (__AVR_ATmega128__)

#define UCSRB           UCSR0B

#define UBRR            UBRR0L

#define UDR             UDR0

#define TIMSK1          TIMSK

#define TIFR1           TIFR

#define SIG_UART_TRANS  SIG_USART0_TRANS

#define SIG_USART_DATA  SIG_USART0_DATA

#define SIG_USART_RECV  SIG_USART0_RECV

#define UCSZ0           UCSZ00

#define UCSZ1           UCSZ01

#define UPM0            UPM00

#define UPM1            UPM01

#define UCSRC           UCSR0C

#elif defined (__AVR_ATtiny1634__)

#define UCSRB           UCSR0B

#define UBRR            UBRR0

#define UDR             UDR0

#define UDRE            UDRE0

#define TIMSK1          TIMSK

#define TIFR1           TIFR

#define UCSZ0           UCSZ00

#define UCSZ1           UCSZ01

#define UPM0            UPM00

#define UPM1            UPM01

#define UCSRA           UCSR0A

#define U2X             U2X0

#define UCSRC           UCSR0C

#define SIG_UART_TRANS  USART0_TX_vect

#define SIG_USART_DATA  USART0_UDRE_vect

#define SIG_USART_RECV  USART0_RX_vect

#define SIG_OUTPUT_COMPARE1A TIMER1_COMPA_vect

#define RXEN            RXEN0

#define RXCIE           RXCIE0

#define TXEN            TXEN0

#define TXCIE           TXCIE0

#endif

/* ----------------------- RS485 specifics ----------------------------------*/

#ifdef  RTS_ENABLE

#define RTS_PIN         PC2

#define RTS_DDR         DDRC

#define RTS_PORT        PORTC

#define RTS_INIT        \

    do { \

        RTS_DDR |= _BV( RTS_PIN ); \

        RTS_PORT &= ~( _BV( RTS_PIN ) ); \

    } while( 0 );

#define RTS_HIGH        \

    do { \

        RTS_PORT |= _BV( RTS_PIN ); \

    } while( 0 );

#define RTS_LOW         \

    do { \

        RTS_PORT &= ~( _BV( RTS_PIN ) ); \

    } while( 0 );

#endif

#endif