2 pins_arduino.h - Pin definition functions for Arduino
3 Part of Arduino - http://www.arduino.cc/
5 Copyright (c) 2007 David A. Mellis
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.
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.
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
23 #ifndef Pins_Arduino_h
24 #define Pins_Arduino_h
26 #include <avr/pgmspace.h>
28 #define NUM_DIGITAL_PINS 20
29 #define NUM_ANALOG_INPUTS 6
30 #define analogInputToDigitalPin(p) ((p < 6) ? (p) + 14 : -1)
32 #if defined(__AVR_ATmega8__)
33 #define digitalPinHasPWM(p) ((p) == 9 || (p) == 10 || (p) == 11)
35 #define digitalPinHasPWM(p) ((p) == 3 || (p) == 5 || (p) == 6 || (p) == 9 || (p) == 10 || (p) == 11)
38 #define PIN_SPI_SS (10)
39 #define PIN_SPI_MOSI (11)
40 #define PIN_SPI_MISO (12)
41 #define PIN_SPI_SCK (13)
43 static const uint8_t SS = PIN_SPI_SS;
44 static const uint8_t MOSI = PIN_SPI_MOSI;
45 static const uint8_t MISO = PIN_SPI_MISO;
46 static const uint8_t SCK = PIN_SPI_SCK;
48 #define PIN_WIRE_SDA (18)
49 #define PIN_WIRE_SCL (19)
51 static const uint8_t SDA = PIN_WIRE_SDA;
52 static const uint8_t SCL = PIN_WIRE_SCL;
65 static const uint8_t A0 = PIN_A0;
66 static const uint8_t A1 = PIN_A1;
67 static const uint8_t A2 = PIN_A2;
68 static const uint8_t A3 = PIN_A3;
69 static const uint8_t A4 = PIN_A4;
70 static const uint8_t A5 = PIN_A5;
71 static const uint8_t A6 = PIN_A6;
72 static const uint8_t A7 = PIN_A7;
74 #define digitalPinToPCICR(p) (((p) >= 0 && (p) <= 21) ? (&PCICR) : ((uint8_t *)0))
75 #define digitalPinToPCICRbit(p) (((p) <= 7) ? 2 : (((p) <= 13) ? 0 : 1))
76 #define digitalPinToPCMSK(p) (((p) <= 7) ? (&PCMSK2) : (((p) <= 13) ? (&PCMSK0) : (((p) <= 21) ? (&PCMSK1) : ((uint8_t *)0))))
77 #define digitalPinToPCMSKbit(p) (((p) <= 7) ? (p) : (((p) <= 13) ? ((p) - 8) : ((p) - 14)))
79 #define digitalPinToInterrupt(p) ((p) == 2 ? 0 : ((p) == 3 ? 1 : NOT_AN_INTERRUPT))
83 // On the Arduino board, digital pins are also used
84 // for the analog output (software PWM). Analog input
85 // pins are a separate set.
87 // ATMEL ATMEGA8 & 168 / ARDUINO
90 // PC6 1| |28 PC5 (AI 5)
91 // (D 0) PD0 2| |27 PC4 (AI 4)
92 // (D 1) PD1 3| |26 PC3 (AI 3)
93 // (D 2) PD2 4| |25 PC2 (AI 2)
94 // PWM+ (D 3) PD3 5| |24 PC1 (AI 1)
95 // (D 4) PD4 6| |23 PC0 (AI 0)
99 // PB7 10| |19 PB5 (D 13)
100 // PWM+ (D 5) PD5 11| |18 PB4 (D 12)
101 // PWM+ (D 6) PD6 12| |17 PB3 (D 11) PWM
102 // (D 7) PD7 13| |16 PB2 (D 10) PWM
103 // (D 8) PB0 14| |15 PB1 (D 9) PWM
106 // (PWM+ indicates the additional PWM pins on the ATmega168.)
108 // ATMEL ATMEGA1280 / ARDUINO
111 // 8-13 PB0-PB5 works
112 // 14-21 PA0-PA7 works
113 // 22-29 PH0-PH7 works
114 // 30-35 PG5-PG0 works
115 // 36-43 PC7-PC0 works
116 // 44-51 PJ7-PJ0 works
117 // 52-59 PL7-PL0 works
118 // 60-67 PD7-PD0 works
123 // these arrays map port names (e.g. port B) to the
124 // appropriate addresses for various functions (e.g. reading
126 const uint16_t PROGMEM port_to_mode_PGM[] = {
134 const uint16_t PROGMEM port_to_output_PGM[] = {
142 const uint16_t PROGMEM port_to_input_PGM[] = {
150 const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
173 const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = {
174 _BV(0), /* 0, port D */
182 _BV(0), /* 8, port B */
188 _BV(0), /* 14, port C */
196 const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
197 NOT_ON_TIMER, /* 0 - port D */
200 // on the ATmega168, digital pin 3 has hardware pwm
201 #if defined(__AVR_ATmega8__)
207 // on the ATmega168, digital pins 5 and 6 have hardware pwm
208 #if defined(__AVR_ATmega8__)
216 NOT_ON_TIMER, /* 8 - port B */
219 #if defined(__AVR_ATmega8__)
227 NOT_ON_TIMER, /* 14 - port C */
236 // These serial port names are intended to allow libraries and architecture-neutral
237 // sketches to automatically default to the correct port name for a particular type
238 // of use. For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
239 // the first hardware serial port whose RX/TX pins are not dedicated to another use.
241 // SERIAL_PORT_MONITOR Port which normally prints to the Arduino Serial Monitor
243 // SERIAL_PORT_USBVIRTUAL Port which is USB virtual serial
245 // SERIAL_PORT_LINUXBRIDGE Port which connects to a Linux system via Bridge library
247 // SERIAL_PORT_HARDWARE Hardware serial port, physical RX & TX pins.
249 // SERIAL_PORT_HARDWARE_OPEN Hardware serial ports which are open for use. Their RX & TX
250 // pins are NOT connected to anything by default.
251 #define SERIAL_PORT_HARDWARE Serial
252 #define SERIAL_PORT_HARDWARE_OPEN Serial
253 #define SERIAL_PORT_MONITOR Serial