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support for 32u4 and Leonardo pins, uploading, and bootloader programming
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‎hardware/arduino/boards.txt

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##############################################################
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leonardo.name=Arduino Leonardo
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leonardo.upload.protocol=stk500
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leonardo.upload.maximum_size=30720
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leonardo.upload.speed=115200
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leonardo.bootloader.low_fuses=0xde
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leonardo.bootloader.high_fuses=0xd8
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leonardo.bootloader.extended_fuses=0xf3
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leonardo.bootloader.path=diskloader
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leonardo.bootloader.file=diskloader_atmega32u4.hex
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leonardo.bootloader.unlock_bits=0x3F
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leonardo.bootloader.lock_bits=0x0F
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leonardo.build.mcu=atmega32u4
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leonardo.build.f_cpu=16000000L
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leonardo.build.core=arduino
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leonardo.build.pins=leonardo
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##############################################################
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uno.name=Arduino Uno
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uno.upload.protocol=stk500
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uno.upload.maximum_size=32256

‎hardware/arduino/pins/leonardo/pins_arduino.h

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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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// Map SPI port to 'new' pins D14..D17
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// D14 PB0 RXLED,SS/PCINT0
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// D15 PB1 SCK,PCINT1
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// D16 PB2 MOSI,PCINT2
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// D17 PB3 MISO,PCINT3
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const static uint8_t SS = 14;
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const static uint8_t MOSI = 16;
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const static uint8_t MISO = 17;
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const static uint8_t SCK = 15;
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const static uint8_t A0 = 14;
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const static uint8_t A1 = 15;
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const static uint8_t A2 = 16;
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const static uint8_t A3 = 17;
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const static uint8_t A4 = 18;
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const static uint8_t A5 = 19;
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const static uint8_t A6 = 20;
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const static uint8_t A7 = 21;
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#ifdef ARDUINO_MAIN
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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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// ATMEL ATMEGA1280 / ARDUINO
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//
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// 0-7 PE0-PE7 works
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// 8-13 PB0-PB5 works
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// 14-21 PA0-PA7 works
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// 22-29 PH0-PH7 works
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// 30-35 PG5-PG0 works
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// 36-43 PC7-PC0 works
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// 44-51 PJ7-PJ0 works
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// 52-59 PL7-PL0 works
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// 60-67 PD7-PD0 works
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// A0-A7 PF0-PF7
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// A8-A15 PK0-PK7
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// ATMEL ATMEGA32U4 / ARDUINO LEONARDO
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//
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// D0 PD2 RXD1/INT2
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// D1 PD3 TXD1/INT3
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// D2 PD1 SDA SDA/INT1
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// D3# PD0 PWM8/SCL OC0B/SCL/INT0
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// D4 A6 PD4 ADC8
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// D5# A7 PD6 FastPWM OC4D/ADC9
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// D6# A8 PD7 FastPWM #OC4D/ADC10
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// D7 PD5 #CTS
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//
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// D8 PB4 ADC11/PCINT4
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// D9# A9 PB5 PWM16 OC1A/#OC4B/ADC13/PCINT5
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// D10# A10 PB6 PWM16 OC1B/0c4B/ADC12/PCINT6
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// D11# PB7 PWM8/16 0C0A/OC1C/#RTS/PCINT7
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// D12# PC6 PWM16 0C3A/#OC4A
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// D13# PC7 PWM10 CLK0/OC4A
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//
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// A0 PF7 ADC7
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// A1 PF6 ADC6
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// A2 PF5 ADC5
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// A3 PF4 ADC4
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// A4 PF1 ADC1
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// A5 PF0 ADC0
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//
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// New pins D14..D17 to map SPI port to digitial pins
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//
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// D14 PB0 RXLED,SS/PCINT0
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// D15 PB1 SCK,PCINT1
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// D16 PB2 MOSI,PCINT2
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// D17 PB3 MISO,PCINT3
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//
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// TXLED PE6 INT6
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// HWB PE2 HWB
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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 uint16_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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&DDRE,
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&DDRF,
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};
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const uint16_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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&PORTE,
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&PORTF,
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};
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const uint16_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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&PINE,
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&PINF,
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};
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const uint8_t PROGMEM digital_pin_to_port_PGM[18] = {
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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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PC, /* 12 */
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PC, /* 13 */
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PB, /* 14 */
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PB, /* 15 */
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PB, /* 16 */
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PB, /* 17 */
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};
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const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[18] = {
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_BV(2), /* 0, port D */
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_BV(3),
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_BV(1),
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_BV(0),
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_BV(4),
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_BV(6),
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_BV(7),
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_BV(5),
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_BV(4), /* 8, port B */
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_BV(5),
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_BV(6),
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_BV(7),
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_BV(6), /* 12 port C */
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_BV(7),
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_BV(0), /* 14, port B */
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_BV(1),
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_BV(2),
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_BV(3),
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};
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const uint8_t PROGMEM digital_pin_to_timer_PGM[18] = {
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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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TIMER0B,
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NOT_ON_TIMER,
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TIMER4D,
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NOT_ON_TIMER, // TIMER4D_NOT TODO. Complementary output of TIMER4D on Digital Pin 6. Not sure this was intended.
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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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TIMER0A,
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TIMER3A, /* 12 port C */
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TIMER4A,
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NOT_ON_TIMER, /* 14 port B */
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NOT_ON_TIMER,
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};
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#endif
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#endif

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