diff options
Diffstat (limited to 'cores/arduino/pins_arduino.c')
| -rwxr-xr-x | cores/arduino/pins_arduino.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/cores/arduino/pins_arduino.c b/cores/arduino/pins_arduino.c new file mode 100755 index 0000000..3ef07b6 --- /dev/null +++ b/cores/arduino/pins_arduino.c @@ -0,0 +1,169 @@ +/* + pins_arduino.c - pin definitions for the Arduino board + Part of Arduino / Wiring Lite + + Copyright (c) 2005 David A. Mellis + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General + Public License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place, Suite 330, + Boston, MA 02111-1307 USA + + $Id$ +*/ + +#include <avr/io.h> +#include "wiring_private.h" +#include "pins_arduino.h" + +// On the Arduino board, digital pins are also used +// for the analog output (software PWM). Analog input +// pins are a separate set. + +// ATMEL ATMEGA8 & 168 / ARDUINO +// +// +-\/-+ +// PC6 1| |28 PC5 (AI 5) +// (D 0) PD0 2| |27 PC4 (AI 4) +// (D 1) PD1 3| |26 PC3 (AI 3) +// (D 2) PD2 4| |25 PC2 (AI 2) +// PWM+ (D 3) PD3 5| |24 PC1 (AI 1) +// (D 4) PD4 6| |23 PC0 (AI 0) +// VCC 7| |22 GND +// GND 8| |21 AREF +// PB6 9| |20 AVCC +// PB7 10| |19 PB5 (D 13) +// PWM+ (D 5) PD5 11| |18 PB4 (D 12) +// PWM+ (D 6) PD6 12| |17 PB3 (D 11) PWM +// (D 7) PD7 13| |16 PB2 (D 10) PWM +// (D 8) PB0 14| |15 PB1 (D 9) PWM +// +----+ +// +// (PWM+ indicates the additional PWM pins on the ATmega168.) + + +#define PB 2 +#define PC 3 +#define PD 4 + +// these arrays map port names (e.g. port B) to the +// appropriate addresses for various functions (e.g. reading +// and writing) +const uint8_t PROGMEM port_to_mode_PGM[] = { + NOT_A_PORT, + NOT_A_PORT, + &DDRB, + &DDRC, + &DDRD, +}; + +const uint8_t PROGMEM port_to_output_PGM[] = { + NOT_A_PORT, + NOT_A_PORT, + &PORTB, + &PORTC, + &PORTD, +}; + +const uint8_t PROGMEM port_to_input_PGM[] = { + NOT_A_PORT, + NOT_A_PORT, + &PINB, + &PINC, + &PIND, +}; + +const uint8_t PROGMEM digital_pin_to_port_PGM[] = { + PD, /* 0 */ + PD, + PD, + PD, + PD, + PD, + PD, + PD, + PB, /* 8 */ + PB, + PB, + PB, + PB, + PB, + PC, /* 14 */ + PC, + PC, + PC, + PC, + PC, +}; + +const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = { + _BV(0), /* 0, port D */ + _BV(1), + _BV(2), + _BV(3), + _BV(4), + _BV(5), + _BV(6), + _BV(7), + _BV(0), /* 8, port B */ + _BV(1), + _BV(2), + _BV(3), + _BV(4), + _BV(5), + _BV(0), /* 14, port C */ + _BV(1), + _BV(2), + _BV(3), + _BV(4), + _BV(5), +}; + +const uint8_t PROGMEM digital_pin_to_timer_PGM[] = { + NOT_ON_TIMER, /* 0 - port D */ + NOT_ON_TIMER, + NOT_ON_TIMER, + // on the ATmega168, digital pin 3 has hardware pwm +#if defined(__AVR_ATmega168__) + TIMER2B, +#else + NOT_ON_TIMER, +#endif + NOT_ON_TIMER, + // on the ATmega168, digital pins 5 and 6 have hardware pwm +#if defined(__AVR_ATmega168__) + TIMER0B, + TIMER0A, +#else + NOT_ON_TIMER, + NOT_ON_TIMER, +#endif + NOT_ON_TIMER, + NOT_ON_TIMER, /* 8 - port B */ + TIMER1A, + TIMER1B, +#if defined(__AVR_ATmega168__) + TIMER2A, +#else + TIMER2, +#endif + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, /* 14 - port C */ + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, + NOT_ON_TIMER, +}; + |