mirror of https://github.com/noisymime/Arduino.git
170 lines
3.3 KiB
C
Executable File
170 lines
3.3 KiB
C
Executable File
/*
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pins_arduino.c - pin definitions for the Arduino board
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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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$Id$
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*/
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#include <avr/io.h>
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#include "wiring_private.h"
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#include "pins_arduino.h"
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// On the Arduino board, digital pins are also used
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// for the analog output (software PWM). Analog input
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// pins are a separate set.
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// ATMEL ATMEGA8 & 168 / ARDUINO
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//
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// +-\/-+
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// PC6 1| |28 PC5 (AI 5)
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// (D 0) PD0 2| |27 PC4 (AI 4)
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// (D 1) PD1 3| |26 PC3 (AI 3)
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// (D 2) PD2 4| |25 PC2 (AI 2)
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// PWM+ (D 3) PD3 5| |24 PC1 (AI 1)
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// (D 4) PD4 6| |23 PC0 (AI 0)
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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 (D 13)
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// PWM+ (D 5) PD5 11| |18 PB4 (D 12)
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// PWM+ (D 6) PD6 12| |17 PB3 (D 11) PWM
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// (D 7) PD7 13| |16 PB2 (D 10) PWM
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// (D 8) PB0 14| |15 PB1 (D 9) PWM
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// +----+
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//
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// (PWM+ indicates the additional PWM pins on the ATmega168.)
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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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// these arrays map port names (e.g. port B) to the
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// appropriate addresses for various functions (e.g. reading
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// and writing)
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const uint8_t PROGMEM port_to_mode_PGM[] = {
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NOT_A_PORT,
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NOT_A_PORT,
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&DDRB,
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&DDRC,
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&DDRD,
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};
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const uint8_t PROGMEM port_to_output_PGM[] = {
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NOT_A_PORT,
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NOT_A_PORT,
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&PORTB,
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&PORTC,
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&PORTD,
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};
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const uint8_t PROGMEM port_to_input_PGM[] = {
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NOT_A_PORT,
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NOT_A_PORT,
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&PINB,
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&PINC,
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&PIND,
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};
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const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
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PD, /* 0 */
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PD,
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PD,
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PD,
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PD,
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PD,
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PD,
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PD,
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PB, /* 8 */
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PB,
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PB,
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PB,
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PB,
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PB,
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PC, /* 14 */
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PC,
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PC,
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PC,
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PC,
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PC,
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};
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const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = {
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_BV(0), /* 0, port D */
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_BV(1),
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_BV(2),
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_BV(3),
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_BV(4),
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_BV(5),
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_BV(6),
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_BV(7),
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_BV(0), /* 8, port B */
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_BV(1),
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_BV(2),
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_BV(3),
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_BV(4),
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_BV(5),
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_BV(0), /* 14, port C */
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_BV(1),
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_BV(2),
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_BV(3),
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_BV(4),
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_BV(5),
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};
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const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
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NOT_ON_TIMER, /* 0 - port D */
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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// on the ATmega168, digital pin 3 has hardware pwm
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#if defined(__AVR_ATmega168__)
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TIMER2B,
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#else
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NOT_ON_TIMER,
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#endif
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NOT_ON_TIMER,
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// on the ATmega168, digital pins 5 and 6 have hardware pwm
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#if defined(__AVR_ATmega168__)
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TIMER0B,
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TIMER0A,
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#else
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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#endif
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NOT_ON_TIMER,
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NOT_ON_TIMER, /* 8 - port B */
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TIMER1A,
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TIMER1B,
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#if defined(__AVR_ATmega168__)
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TIMER2A,
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#else
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TIMER2,
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#endif
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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NOT_ON_TIMER, /* 14 - port C */
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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NOT_ON_TIMER,
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};
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