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66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
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/*
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pins_arduino.h - Pin definition functions for Arduino
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Part of Arduino - http://www.arduino.cc/
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Copyright (c) 2007 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: wiring.h 249 2007-02-03 16:52:51Z mellis $
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*/
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#ifndef Pins_Arduino_h
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#define Pins_Arduino_h
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#include <avr/pgmspace.h>
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#define NOT_A_PIN 0
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#define NOT_A_PORT 0
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#define NOT_ON_TIMER 0
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#define TIMER0A 1
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#define TIMER0B 2
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#define TIMER1A 3
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#define TIMER1B 4
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#define TIMER2 5
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#define TIMER2A 6
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#define TIMER2B 7
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extern const uint8_t PROGMEM port_to_mode_PGM[];
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extern const uint8_t PROGMEM port_to_input_PGM[];
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extern const uint8_t PROGMEM port_to_output_PGM[];
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extern const uint8_t PROGMEM digital_pin_to_port_PGM[];
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extern const uint8_t PROGMEM digital_pin_to_bit_PGM[];
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extern const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[];
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extern const uint8_t PROGMEM digital_pin_to_timer_PGM[];
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// Get the bit location within the hardware port of the given virtual pin.
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// This comes from the pins_*.c file for the active board configuration.
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//
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// These perform slightly better as macros compared to inline functions
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//
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#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
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#define digitalPinToBitMask(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM + (P) ) )
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#define digitalPinToTimer(P) ( pgm_read_byte( digital_pin_to_timer_PGM + (P) ) )
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#define analogInPinToBit(P) (P)
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#define portOutputRegister(P) ( (volatile uint8_t *)( pgm_read_byte( port_to_output_PGM + (P))) )
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#define portInputRegister(P) ( (volatile uint8_t *)( pgm_read_byte( port_to_input_PGM + (P))) )
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#define portModeRegister(P) ( (volatile uint8_t *)( pgm_read_byte( port_to_mode_PGM + (P))) )
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#endif
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