/*
  Copyright (c) 2011 Arduino.  All right reserved.

  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef _VARIANT_ARDUINO_DUE_
#define _VARIANT_ARDUINO_DUE_

/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/

#include "Arduino.h"
#ifdef __cplusplus
#include "UARTClass.h"
#include "USARTClass.h"
#endif

/**
 * Libc porting layers
 */
#if defined (  __GNUC__  ) /* GCC CS3 */
#    include <syscalls.h> /** RedHat Newlib minimal stub */
#endif

/*----------------------------------------------------------------------------
 *        Definitions
 *----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------*/

#ifndef arduino_due
#define arduino_due
#endif

/** Name of the board */
#define VARIANT_NAME "ARDUINO_DUE"

/*
#define VARIANT_REV_A
#define VARIANT_REV_B
*/

/** Frequency of the board main oscillator */
#define VARIANT_MAINOSC           12000000

/** Master clock frequency */
#define VARIANT_MCK               96000000

/*----------------------------------------------------------------------------
 *        Pins
 *----------------------------------------------------------------------------*/

// Number of pins defined in PinDescription array
#define PINS_COUNT           (84u)

// LEDs
#define PIN_LED_13           (13u)
#define PIN_LED_RXL          (72u)
#define PIN_LED_TXL          (73u)
#define PIN_LED              PIN_LED_13
#define PIN_LED2             PIN_LED_RXL
#define PIN_LED3             PIN_LED_TXL

/*
 * SPI Interfaces
 */
#define SPI_INTERFACES_COUNT 1

#define SPI_INTERFACE        SPI
#define SPI_INTERFACE_ID     ID_SPI
#define PIN_SPI_SS           (77u)
#define PIN_SPI_MOSI         (75u)
#define PIN_SPI_MISO         (74u)
#define PIN_SPI_SCK          (76u)

static const uint8_t SS   = PIN_SPI_SS ;
static const uint8_t MOSI = PIN_SPI_MOSI ;
static const uint8_t MISO = PIN_SPI_MISO ;
static const uint8_t SCK  = PIN_SPI_SCK ;

/*
 * Wire Interfaces
 */
#define WIRE_INTERFACES_COUNT 2

#define PIN_WIRE_SDA         (20u)
#define PIN_WIRE_SCL         (21u)
#define WIRE_INTERFACE       TWI1
#define WIRE_INTERFACE_ID    ID_TWI1
#define WIRE_ISR_HANDLER     TWI1_IrqHandler

#define PIN_WIRE1_SDA        (70u)
#define PIN_WIRE1_SCL        (71u)
#define WIRE1_INTERFACE      TWI0
#define WIRE1_INTERFACE_ID   ID_TWI0
#define WIRE1_ISR_HANDLER    TWI0_IrqHandler

/*
 * UART/USART Interfaces
 */
#define PINS_UART            (81u)

#define PINS_USART0          (82u)
#define PINS_USART1          (83u)
#define PINS_USART2          (84u)

/*
 * Analog pins
 */
static const uint8_t A0  = 54;
static const uint8_t A1  = 55;
static const uint8_t A2  = 56;
static const uint8_t A3  = 57;
static const uint8_t A4  = 58;
static const uint8_t A5  = 59;
static const uint8_t A6  = 60;
static const uint8_t A7  = 61;
static const uint8_t A8  = 62;
static const uint8_t A9  = 63;
static const uint8_t A10 = 64;
static const uint8_t A11 = 65;
static const uint8_t A12 = 66;
static const uint8_t A13 = 67;
static const uint8_t A14 = 68;
static const uint8_t A15 = 69;

/*
 * PWM
 */
#define PWM_INTERFACE        PWM
#define PWM_INTERFACE_ID     ID_PWM
#define PWM_FREQUENCY        1000
#define PWM_MAX_DUTY_CYCLE   255
#define PWM_MIN_DUTY_CYCLE   0

/*
 * TC
 */
#define TC_INTERFACE        TC0
#define TC_INTERFACE_ID     ID_TC0
#define TC_FREQUENCY        1000
#define TC_MAX_DUTY_CYCLE   255
#define TC_MIN_DUTY_CYCLE   0

/*----------------------------------------------------------------------------
 *        Arduino objects - C++ only
 *----------------------------------------------------------------------------*/

#ifdef __cplusplus

extern UARTClass Serial ;

extern USARTClass Serial2 ;
extern USARTClass Serial3 ;
extern USARTClass Serial4 ;

#endif

#endif /* _VARIANT_ARDUINO_DUE_ */