1 /* 2 pins_arduino.h - Pin definition functions for Arduino 3 Part of Arduino - http://www.arduino.cc/ 4 5 Copyright (c) 2007 David A. Mellis 6 7 This library is free software; you can redistribute it and/or 8 modify it under the terms of the GNU Lesser General Public 9 License as published by the Free Software Foundation; either 10 version 2.1 of the License, or (at your option) any later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 Lesser General Public License for more details. 16 17 You should have received a copy of the GNU Lesser General 18 Public License along with this library; if not, write to the 19 Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20 Boston, MA 02111-1307 USA 21 22 $Id: wiring.h 249 2007-02-03 16:52:51Z mellis $ 23 */ 24 25 #ifndef Pins_Arduino_h 26 #define Pins_Arduino_h 27 28 #include <avr/pgmspace.h> 29 30 #define NOT_A_PIN 0 31 #define NOT_A_PORT 0 32 33 #define NOT_ON_TIMER 0 34 #define TIMER0A 1 35 #define TIMER0B 2 36 #define TIMER1A 3 37 #define TIMER1B 4 38 #define TIMER2 5 39 #define TIMER2A 6 40 #define TIMER2B 7 41 42 #define TIMER3A 8 43 #define TIMER3B 9 44 #define TIMER3C 10 45 #define TIMER4A 11 46 #define TIMER4B 12 47 #define TIMER4C 13 48 #define TIMER5A 14 49 #define TIMER5B 15 50 #define TIMER5C 16 51 52 #if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) 53 const static uint8_t SS = 53; 54 const static uint8_t MOSI = 51; 55 const static uint8_t MISO = 50; 56 const static uint8_t SCK = 52; 57 #else 58 const static uint8_t SS = 10; 59 const static uint8_t MOSI = 11; 60 const static uint8_t MISO = 12; 61 const static uint8_t SCK = 13; 62 #endif 63 64 // On the ATmega1280, the addresses of some of the port registers are 65 // greater than 255, so we can't store them in uint8_t's. 66 extern const uint16_t PROGMEM port_to_mode_PGM[]; 67 extern const uint16_t PROGMEM port_to_input_PGM[]; 68 extern const uint16_t PROGMEM port_to_output_PGM[]; 69 70 extern const uint8_t PROGMEM digital_pin_to_port_PGM[]; 71 // extern const uint8_t PROGMEM digital_pin_to_bit_PGM[]; 72 extern const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[]; 73 extern const uint8_t PROGMEM digital_pin_to_timer_PGM[]; 74 75 // Get the bit location within the hardware port of the given virtual pin. 76 // This comes from the pins_*.c file for the active board configuration. 77 // 78 // These perform slightly better as macros compared to inline functions 79 // 80 #define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) ) 81 #define digitalPinToBitMask(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM + (P) ) ) 82 #define digitalPinToTimer(P) ( pgm_read_byte( digital_pin_to_timer_PGM + (P) ) ) 83 #define analogInPinToBit(P) (P) 84 #define portOutputRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_output_PGM + (P))) ) 85 #define portInputRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_input_PGM + (P))) ) 86 #define portModeRegister(P) ( (volatile uint8_t *)( pgm_read_word( port_to_mode_PGM + (P))) ) 87 88 #endif 89
