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120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
15 years ago
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/*
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pin_atmega8.c - pin definitions for the atmega8
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Part of Arduino / Wiring Lite
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Copyright (c) 2005 David A. Mellis
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General
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Public License along with this library; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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Boston, MA 02111-1307 USA
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$Id: pins_atmega8.c 85 2006-01-12 23:24:12Z mellis $
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*/
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#include <avr/io.h>
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#include "wiring.h"
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// We map the pin numbers passed to digitalRead() or
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// analogRead() directly to the corresponding pin
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// numbers on the Atmega8. No distinction is made
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// between analog and digital pins.
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// ATMEL ATMEGA8
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//
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// +-\/-+
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// PC6 1| |28 PC5
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// PD0 2| |27 PC4
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// PD1 3| |26 PC3
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// PD2 4| |25 PC2
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// PD3 5| |24 PC1
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// PD4 6| |23 PC0
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// VCC 7| |22 GND
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// GND 8| |21 AREF
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// PB6 9| |20 AVCC
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// PB7 10| |19 PB5
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// PD5 11| |18 PB4
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// PD6 12| |17 PB3
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// PD7 13| |16 PB2
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// PB0 14| |15 PB1
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// +----+
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#define NUM_PINS 28
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#define NUM_PORTS 4
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#define PB 2
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#define PC 3
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#define PD 4
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int port_to_mode[NUM_PORTS + 1] = {
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NOT_A_PORT,
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NOT_A_PORT,
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_SFR_IO_ADDR(DDRB),
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_SFR_IO_ADDR(DDRC),
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_SFR_IO_ADDR(DDRD),
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};
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int port_to_output[NUM_PORTS + 1] = {
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NOT_A_PORT,
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NOT_A_PORT,
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_SFR_IO_ADDR(PORTB),
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_SFR_IO_ADDR(PORTC),
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_SFR_IO_ADDR(PORTD),
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};
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int port_to_input[NUM_PORTS + 1] = {
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NOT_A_PORT,
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NOT_A_PORT,
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_SFR_IO_ADDR(PINB),
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_SFR_IO_ADDR(PINC),
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_SFR_IO_ADDR(PIND),
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};
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pin_t digital_pin_to_port_array[] = {
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{ NOT_A_PIN, NOT_A_PIN },
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{ PC, 6 },
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{ PD, 0 },
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{ PD, 1 },
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{ PD, 2 },
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{ PD, 3 },
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{ PD, 4 },
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{ NOT_A_PIN, NOT_A_PIN },
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{ NOT_A_PIN, NOT_A_PIN },
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{ PB, 6 },
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{ PB, 7 },
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{ PD, 5 },
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{ PD, 6 },
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{ PD, 7 },
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{ PB, 0 },
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{ PB, 1 },
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{ PB, 2 },
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{ PB, 3 },
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{ PB, 4 },
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{ PB, 5 },
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{ NOT_A_PIN, NOT_A_PIN },
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{ NOT_A_PIN, NOT_A_PIN },
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{ NOT_A_PIN, NOT_A_PIN },
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{ PC, 0 },
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{ PC, 1 },
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{ PC, 2 },
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{ PC, 3 },
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{ PC, 4 },
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{ PC, 5 },
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};
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pin_t *digital_pin_to_port = digital_pin_to_port_array;
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pin_t *analog_in_pin_to_port = digital_pin_to_port_array;
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pin_t *analog_out_pin_to_port = digital_pin_to_port_array;
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