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/*
pin_atmega8.c - pin definitions for the atmega8
Part of Arduino / Wiring Lite
Copyright (c) 2005 David A. Mellis
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., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
$Id$
*/
#include <avr/io.h>
#include "wiring.h"
// We map the pin numbers passed to digitalRead() or
// analogRead() directly to the corresponding pin
// numbers on the Atmega8. No distinction is made
// between analog and digital pins.
// ATMEL ATMEGA8
//
// +-\/-+
// PC6 1| |28 PC5
// PD0 2| |27 PC4
// PD1 3| |26 PC3
// PD2 4| |25 PC2
// PD3 5| |24 PC1
// PD4 6| |23 PC0
// VCC 7| |22 GND
// GND 8| |21 AREF
// PB6 9| |20 AVCC
// PB7 10| |19 PB5
// PD5 11| |18 PB4
// PD6 12| |17 PB3
// PD7 13| |16 PB2
// PB0 14| |15 PB1
// +----+
#define NUM_PINS 28
#define NUM_PORTS 4
#define PB 2
#define PC 3
#define PD 4
int port_to_mode[NUM_PORTS + 1] = {
NOT_A_PORT,
NOT_A_PORT,
_SFR_IO_ADDR(DDRB),
_SFR_IO_ADDR(DDRC),
_SFR_IO_ADDR(DDRD),
};
int port_to_output[NUM_PORTS + 1] = {
NOT_A_PORT,
NOT_A_PORT,
_SFR_IO_ADDR(PORTB),
_SFR_IO_ADDR(PORTC),
_SFR_IO_ADDR(PORTD),
};
int port_to_input[NUM_PORTS + 1] = {
NOT_A_PORT,
NOT_A_PORT,
_SFR_IO_ADDR(PINB),
_SFR_IO_ADDR(PINC),
_SFR_IO_ADDR(PIND),
};
pin_t digital_pin_to_port_array[] = {
{ NOT_A_PIN, NOT_A_PIN },
{ PC, 6 },
{ PD, 0 },
{ PD, 1 },
{ PD, 2 },
{ PD, 3 },
{ PD, 4 },
{ NOT_A_PIN, NOT_A_PIN },
{ NOT_A_PIN, NOT_A_PIN },
{ PB, 6 },
{ PB, 7 },
{ PD, 5 },
{ PD, 6 },
{ PD, 7 },
{ PB, 0 },
{ PB, 1 },
{ PB, 2 },
{ PB, 3 },
{ PB, 4 },
{ PB, 5 },
{ NOT_A_PIN, NOT_A_PIN },
{ NOT_A_PIN, NOT_A_PIN },
{ NOT_A_PIN, NOT_A_PIN },
{ PC, 0 },
{ PC, 1 },
{ PC, 2 },
{ PC, 3 },
{ PC, 4 },
{ PC, 5 },
};
pin_t *digital_pin_to_port = digital_pin_to_port_array;
pin_t *analog_in_pin_to_port = digital_pin_to_port_array;
pin_t *analog_out_pin_to_port = digital_pin_to_port_array;
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