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/*
pins_arduino.h - Pin definition functions for Arduino
Part of Arduino - http://www.arduino.cc/

Copyright (c) 2007 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: wiring.h 249 2007-02-03 16:52:51Z mellis $
*/

#ifndef Pins_Arduino_h
#define Pins_Arduino_h

#include <avr/pgmspace.h>

#define NUM_ANALOG_INPUTS 0
#define NUM_DIGITAL_PINS 24

// We only have a small USB buffer
#define USB_EP_SIZE 16

// Use LED A (D7 - PD6) for USB activity
// Mapping both RX and TX to the same pin will cause some flickering
// but is close enough
#define TX_RX_LED_INIT DDRD |= (1<<6), PORTD |= (1<<6)
#define TXLED0 PORTD |= (1<<6)
#define TXLED1 PORTD &= ~(1<<6)
#define RXLED0 PORTD |= (1<<6)
#define RXLED1 PORTD &= ~(1<<6)

static const uint8_t SS = 10;
static const uint8_t MOSI = 12;
static const uint8_t MISO = 13;
static const uint8_t SCK = 11;

extern const uint8_t PROGMEM pin_to_pcint_PGM[24];
#define digitalPinToPCICR(p) ((pgm_read_byte(pin_to_pcint_PGM + (p)) < 12) ? &PCICR : (uint8_t *)0)
#define digitalPinToPCICRbit(p) (pgm_read_byte(pin_to_pcint_PGM + (p)) >> 3)
#define digitalPinToPCMSK(p) ((pgm_read_byte(pin_to_pcint_PGM + (p)) >> 3) ? &PCMSK0 : &PCMSK1)
#define digitalPinToPCMSKbit(p) (pgm_read_byte(pin_to_pcint_PGM + (p)) & 7)

#define analogPinToChannel(P) ( -1 )

#ifdef ARDUINO_MAIN

// On the Arduino board, digital pins are also used
// for the analog output (software PWM). Analog input
// pins are a separate set.

// ATMEL ATMEGA32U2 / Minimus 32
//
// Pins numbered counter-clockwise starting from USB connector
//
// D0 PC2 PCINT11
// D1# PD0 OC0B
// D2 PD1
// D3 PD2 RX
// D4 PD3 TX
// D5 PD4
// D6 PD5 LEB B (Blue)
// [D7] PD6 LED A (Red/USB)
// D8 PD7 HWB
// D9 PB0 SS/PCINT0
// D10 PB1 SCK/PCINT1
// [D11] GND
//
// D12 PB2 MOSI/PCINT2
// D13 PB3 MISO/PCINT3
// D14 PB4 PCINT4
// D15 PB5 PCINT5
// D16 PB6 PCINT6
// D17# PB7 PCINT7/OC0A/OC1C
// D18 PC7
// D19# PC6 PCINT8/OC1A
// [D20] !RESET
// D21# PC5 PCINT9/OC1B
// D22 PC4 PCINT10
// [D23] VCC

const uint8_t PROGMEM pin_to_pcint_PGM[24] = {
11, // D0 - PC2
0xff, // D1 - PD0
0xff, // D2 - PD1
0xff, // D3 - PD2
0xff, // D4 - PD3
0xff, // D5 - PD4
0xff, // D6 - PD5
0xff, // D7 - PD6
0xff, // D8 - PD7
0, // D9 - PB0
1, // D10 - PB1
0xff, // GND
2, // D12 - PB2
3, // D13 - PB3
4, // D14 - PB4
5, // D15 - PB5
6, // D16 - PB6
7, // D17 - PB7
0xff, // D18 - PC7
8, // D19 - PC6
0xff, // !RESET
9, // D21 - PC5
10, // D22 - PC4
0xff // VCC
};

// these arrays map port names (e.g. port B) to the
// appropriate addresses for various functions (e.g. reading
// and writing)
const uint16_t PROGMEM port_to_mode_PGM[] = {
NOT_A_PORT,
NOT_A_PORT,
(uint16_t) &DDRB,
(uint16_t) &DDRC,
(uint16_t) &DDRD,
};

const uint16_t PROGMEM port_to_output_PGM[] = {
NOT_A_PORT,
NOT_A_PORT,
(uint16_t) &PORTB,
(uint16_t) &PORTC,
(uint16_t) &PORTD,
};

const uint16_t PROGMEM port_to_input_PGM[] = {
NOT_A_PORT,
NOT_A_PORT,
(uint16_t) &PINB,
(uint16_t) &PINC,
(uint16_t) &PIND,
};

const uint8_t PROGMEM digital_pin_to_port_PGM[24] = {
PC, // D0 - PC2
PD, // D1 - PD0
PD, // D2 - PD1
PD, // D3 - PD2
PD, // D4 - PD3
PD, // D5 - PD4
PD, // D6 - PD5
NOT_A_PIN, // D7 - PD6
PD, // D8 - PD7
PB, // D9 - PB0
PB, // D10 - PB1
NOT_A_PIN, // GND
PB, // D12 - PB2
PB, // D13 - PB3
PB, // D14 - PB4
PB, // D15 - PB5
PB, // D16 - PB6
PB, // D17 - PB7
PC, // D18 - PC7
PC, // D19 - PC6
NOT_A_PIN, // !RESET
PC, // D21 - PC5
PC, // D22 - PC4
NOT_A_PIN // VCC
};

const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[24] = {
_BV(2), // D0 - PC2
_BV(0), // D1 - PD0
_BV(1), // D2 - PD1
_BV(2), // D3 - PD2
_BV(3), // D4 - PD3
_BV(4), // D5 - PD4
_BV(5), // D6 - PD5
_BV(6), // D7 - PD6
_BV(7), // D8 - PD7
_BV(0), // D9 - PB0
_BV(1), // D10 - PB1
0, // GND
_BV(2), // D12 - PB2
_BV(3), // D13 - PB3
_BV(4), // D14 - PB4
_BV(5), // D15 - PB5
_BV(6), // D16 - PB6
_BV(7), // D17 - PB7
_BV(7), // D18 - PC7
_BV(6), // D19 - PC6
0, // !RESET
_BV(5), // D21 - PC5
_BV(4), // D22 - PC4
0, // VCC
};

const uint8_t PROGMEM digital_pin_to_timer_PGM[24] = {
NOT_ON_TIMER,
TIMER0B, /* 1 */
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,

NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
NOT_ON_TIMER,
TIMER0A, /* 17 */
NOT_ON_TIMER,
TIMER1A, /* 18 */
NOT_ON_TIMER,
TIMER1B, /* 19 */
NOT_ON_TIMER,
NOT_ON_TIMER,
};

#endif /* ARDUINO_MAIN */
#endif /* Pins_Arduino_h */
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