/*
  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_SAM3S_EK_
#define _VARIANT_SAM3S_EK_

/*----------------------------------------------------------------------------
 *        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 sam3s_ek
#define sam3s_ek
#endif

/** Name of the board */
#define VARIANT_NAME "SAM3S-EK"

#define VARIANT_REV_A
/*
#define VARIANT_REV_B
*/

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

/** Master clock frequency */
#define VARIANT_MCK               64000000

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

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

// LEDs
#define PIN_LED_BLUE         (0u)
#define PIN_LED_GREEN        (1u)
#define PIN_LED_RED          (2u)
#define PIN_LED              PIN_LED_BLUE

/*
 * SPI Interfaces
 */
#define SPI_INTERFACES_COUNT 1

#define SPI_INTERFACE        SPI
#define SPI_INTERFACE_ID     ID_SPI
#define PIN_SPI_SS           (4u)
#define PIN_SPI_MOSI         (76u)
#define PIN_SPI_MISO         (75u)
#define PIN_SPI_SCK          (77u)

static const uint8_t SS   = 34 ;
static const uint8_t MOSI = 32 ;
static const uint8_t MISO = 31 ;
static const uint8_t SCK  = 33 ;

/*
 * 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        (68u)
#define PIN_WIRE1_SCL        (69u)
#define WIRE1_INTERFACE      TWI0
#define WIRE1_INTERFACE_ID   ID_TWI0
#define WIRE1_ISR_HANDLER    TWI0_IrqHandler

#if defined VARIANT_REV_A
#  define PIN_TSC_IRQ_WUP_ID (1UL << 3)
#elif defined VARIANT_REV_B
#  define PIN_TSC_IRQ_WUP_ID (1UL << 15)
#else
#error "No board revision defined"
#endif

#define BOARD_LCD_PINS              PIN_EBI_DATA_BUS, PIN_EBI_NRD, PIN_EBI_NWE, PIN_EBI_NCS1, PIN_EBI_LCD_RS
#define BOARD_LCD_BASE              0x61000000 /** Define ILI9325 base address. */
#define BOARD_LCD_RS                (1 << 1) /** Define ILI9325 register select signal. */

/*
 * UART/USART Interfaces
 */
#define PINS_UART            (6u)

#define PINS_USART0          (81u)
#define PINS_USART1          (82u)

/*
 * 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 = ;
static const uint8_t A15 = ;

#define PIN_DAC0             (u)

/*
 * 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 UARTClass Serial2 ;

extern USARTClass Serial3 ;

#endif

#endif /* _VARIANT_SAM3S_EK_ */