/*
  Copyright (c) 2014-2015 Arduino LLC.  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
*/

#pragma once

// The definitions here needs a SAMD core >=1.6.10
#define ARDUINO_SAMD_VARIANT_COMPLIANCE 10610


#include <WVariant.h>

// General definitions
// -------------------

// Frequency of the board main oscillator
#define VARIANT_MAINOSC (32768ul)

// Master clock frequency
#define VARIANT_MCK     (F_CPU)

// Pins
// ----

// Number of pins defined in PinDescription array
#define PINS_COUNT           (39u)
#define NUM_DIGITAL_PINS     (39u)
#define NUM_ANALOG_INPUTS    (11u)
#define NUM_ANALOG_OUTPUTS   (1u)

// Low-level pin register query macros
// -----------------------------------
#define digitalPinToPort(P)      (&(PORT->Group[g_APinDescription[P].ulPort]))
#define digitalPinToBitMask(P)   (1 << g_APinDescription[P].ulPin)
//#define analogInPinToBit(P)    ()
#define portOutputRegister(port) (&(port->OUT.reg))
#define portInputRegister(port)  (&(port->IN.reg))
#define portModeRegister(port)   (&(port->DIR.reg))
#define digitalPinHasPWM(P)      (g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER)

#if (ARDUINO_SAMD_VARIANT_COMPLIANCE < 10606)
  #define digitalPinToInterrupt(P) (g_APinDescription[P].ulExtInt)
#endif

/*
 * digitalPinToTimer(..) is AVR-specific and is not defined for SAMD
 * architecture. If you need to check if a pin supports PWM you must
 * use digitalPinHasPWM(..).
 *
 * https://github.com/arduino/Arduino/issues/1833
 */
// #define digitalPinToTimer(P)


// LEDs
// ----
#define PIN_LED_13  (13u)
#define PIN_LED     PIN_LED_13
#define LED_BUILTIN PIN_LED


//#define PIN_LED_RXL          (25u)
//#define PIN_LED_TXL          (26u)
//#define PIN_LED2             PIN_LED_RXL
//#define PIN_LED3             PIN_LED_TXL

/*
 * Analog pins
 */
#define PIN_A0               (14ul)
#define PIN_A1               (PIN_A0 + 1)
#define PIN_A2               (PIN_A0 + 2)
#define PIN_A3               (PIN_A0 + 3)
#define PIN_A4               (PIN_A0 + 4)
#define PIN_A5               (PIN_A0 + 5)
#define PIN_A6               (PIN_A0 + 6)
#define PIN_A7               (PIN_A0 + 7)
#define PIN_A8               (PIN_A0 + 8)
#define PIN_A9               (PIN_A0 + 9)
#define PIN_A10              (PIN_A0 + 10)

#define PIN_DAC0             (PIN_A0)


static const uint8_t A0  = PIN_A0;
static const uint8_t A1  = PIN_A1;
static const uint8_t A2  = PIN_A2;
static const uint8_t A3  = PIN_A3;
static const uint8_t A4  = PIN_A4;
static const uint8_t A5  = PIN_A5;
static const uint8_t A6  = PIN_A6 ;
static const uint8_t A7  = PIN_A7 ;
static const uint8_t A8  = PIN_A8 ;
static const uint8_t A9  = PIN_A9 ;
static const uint8_t A10  = PIN_A10 ;
static const uint8_t DAC0 = PIN_DAC0;

#define ADC_RESOLUTION		12


// On-board SPI Flash
#define EXTERNAL_FLASH_DEVICES  GD25Q16C
#define EXTERNAL_FLASH_USE_SPI  SPI
#define EXTERNAL_FLASH_USE_CS   SS

/*
 * SPI Interfaces
 */
#define SPI_INTERFACES_COUNT 3

// SPI interface for QSPI flash
#define PIN_SPI_MISO         (30u)
#define PIN_SPI_SCK          (31u)
#define PIN_SPI_MOSI         (32u)
#define PERIPH_SPI           sercom3
#define PAD_SPI_TX           SPI_PAD_2_SCK_3  // MOSI / SCK
#define PAD_SPI_RX           SERCOM_RX_PAD_0  // MISO

static const uint8_t SS	  = 33 ;
static const uint8_t MOSI = PIN_SPI_MOSI ;
static const uint8_t MISO = PIN_SPI_MISO ;
static const uint8_t SCK  = PIN_SPI_SCK ;


// Extra hardware SPI for Gizmo
#define PIN_SPI1_SCK          (40u)
#define PIN_SPI1_MOSI         (39u)
#define PIN_SPI1_MISO         (41u)
#define PERIPH_SPI1           sercom5
#define PAD_SPI1_TX           SPI_PAD_0_SCK_1  // MOSI / SCK
#define PAD_SPI1_RX           SERCOM_RX_PAD_2  // MISO not avail

static const uint8_t SS1	  = 42 ;
static const uint8_t MOSI1 = PIN_SPI_MOSI ;
static const uint8_t MISO1 = PIN_SPI_MISO ;
static const uint8_t SCK1  = PIN_SPI_SCK ;


// Extra hardware for SD card
#define PIN_SPI2_SCK          (10u)
#define PIN_SPI2_MOSI         (9u)
#define PIN_SPI2_MISO         (6u)
#define PIN_SPI2_SS           (5u)
#define PERIPH_SPI2           sercom0
#define PAD_SPI2_TX           SPI_PAD_2_SCK_3  // MOSI / SCK
#define PAD_SPI2_RX           SERCOM_RX_PAD_1  // MISO not avail

static const uint8_t SS2   = 5 ;
static const uint8_t MOSI2 = PIN_SPI2_MOSI ;
static const uint8_t MISO2 = PIN_SPI2_MISO ;
static const uint8_t SCK2  = PIN_SPI2_SCK ;


// Needed for SD library
#define SDCARD_SPI      SPI2
#define SDCARD_MISO_PIN PIN_SPI2_MISO
#define SDCARD_MOSI_PIN PIN_SPI2_MOSI
#define SDCARD_SCK_PIN  PIN_SPI2_SCK
#define SDCARD_SS_PIN   PIN_SPI2_SS

/*
 * Wire Interfaces
 */
#define WIRE_INTERFACES_COUNT 2

  // "external" public i2c interface
#define PIN_WIRE_SDA         (2u)
#define PIN_WIRE_SCL         (3u)
#define PERIPH_WIRE          sercom5
#define WIRE_IT_HANDLER      SERCOM5_Handler
static const uint8_t SDA = PIN_WIRE_SDA;
static const uint8_t SCL = PIN_WIRE_SCL;

  // "internal" lis3dh i2c interface
#define PIN_WIRE1_SDA         (28u)
#define PIN_WIRE1_SCL         (29u)
#define PERIPH_WIRE1          sercom1
#define WIRE1_IT_HANDLER      SERCOM1_Handler
static const uint8_t SDA1 = PIN_WIRE1_SDA;
static const uint8_t SCL1 = PIN_WIRE1_SCL;

// USB
// ---
#define PIN_USB_HOST_ENABLE (36ul)
#define PIN_USB_DM          (37ul)
#define PIN_USB_DP          (38ul)

// I2S Interfaces
// --------------
#define I2S_INTERFACES_COUNT 0

// Serial ports
// ------------
#ifdef __cplusplus
#include "SERCOM.h"
#include "Uart.h"

// Instances of SERCOM
extern SERCOM sercom0;
extern SERCOM sercom1;
extern SERCOM sercom2;
extern SERCOM sercom3;
extern SERCOM sercom4;
extern SERCOM sercom5;

// Serial1
extern Uart Serial1;
#define PIN_SERIAL1_RX       (0ul)
#define PIN_SERIAL1_TX       (1ul)
#define PAD_SERIAL1_TX       (UART_TX_PAD_0)
#define PAD_SERIAL1_RX       (SERCOM_RX_PAD_1)
#endif // __cplusplus



// These serial port names are intended to allow libraries and architecture-neutral
// sketches to automatically default to the correct port name for a particular type
// of use.  For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
// the first hardware serial port whose RX/TX pins are not dedicated to another use.
//
// SERIAL_PORT_MONITOR        Port which normally prints to the Arduino Serial Monitor
//
// SERIAL_PORT_USBVIRTUAL     Port which is USB virtual serial
//
// SERIAL_PORT_LINUXBRIDGE    Port which connects to a Linux system via Bridge library
//
// SERIAL_PORT_HARDWARE       Hardware serial port, physical RX & TX pins.
//
// SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
//                            pins are NOT connected to anything by default.
#define SERIAL_PORT_USBVIRTUAL      SerialUSB
#define SERIAL_PORT_MONITOR         SerialUSB
#define SERIAL_PORT_HARDWARE        Serial1
#define SERIAL_PORT_HARDWARE_OPEN   Serial1

// Alias Serial to SerialUSB
#define Serial                      SerialUSB
