/*
  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
*/

#include "variant.h"
#include "Arduino.h"
/*
 * Pins descriptions
 */
const PinDescription g_APinDescription[]=
{
  { PORTA,  2, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // A0 / D0 / DAC
  { PORTA,  3, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG), ADC_Channel1, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_3 }, // A1 / D1 / AREF
  { PORTA,  4, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel4, PWM0_CH0, TCC0_CH0, EXTERNAL_INT_4 }, // A2 / D2 / PWM
  { PORTA,  5, PIO_ANALOG, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel5, PWM0_CH1, TCC0_CH1, EXTERNAL_INT_5 }, // A3 / D3 / PWM

  // I2C SDA & SCL
  { PORTA, 16, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH0, TCC2_CH0, EXTERNAL_INT_0 }, // D4 / SDA / PWM
  { PORTA, 17, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM2_CH1, TCC2_CH1, EXTERNAL_INT_1 }, // D5 / SCL / PWM

  // UART TX & RX
  { PORTA,  6, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel6, PWM1_CH0, TCC1_CH0, EXTERNAL_INT_6 }, // A6 / D6 / TX / PWM
  { PORTA,  7, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER), ADC_Channel7, PWM1_CH1, TCC1_CH1, EXTERNAL_INT_7 }, // A7 / D7 / RX / PWM

  // SPI SCK, MISO, MOSI
  { PORTA, 11, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), ADC_Channel19, PWM0_CH3, TCC0_CH3, EXTERNAL_INT_11 }, // A8 / D8 / SCK / PWM
  { PORTA,  9, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), ADC_Channel17, PWM1_CH3, TCC1_CH3, EXTERNAL_INT_9 },  // A9 / D9 / MISO / PWM 
  { PORTA, 10, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), ADC_Channel18, PWM0_CH2, TCC0_CH2, EXTERNAL_INT_10 }, // A10 / D10 / MOSI / PWM

  { PORTA, 18, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // D11 Neopix
  { PORTA, 15, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_15 }, // D12 Neopix power 

  // D13 fake pin
  { PORTA, 27, PIO_OUTPUT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // used as fake output only

  // SPI1 SCK, MISO, MOSI
  { PORTA, 23, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH5, TCC0_CH5, EXTERNAL_INT_7 }, // D14 / SCK1
  { PORTA, 19, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER), No_ADC_Channel, PWM3_CH1, TC3_CH1, EXTERNAL_INT_3 }, // D15 / MISO1
  { PORTA, 22, PIO_SERCOM, (PIN_ATTR_DIGITAL|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), No_ADC_Channel, PWM0_CH4, TCC0_CH4, EXTERNAL_INT_6 },   // D16 / MOSI1
  // SPI1 CS
  { PORTA,  8, PIO_SERCOM_ALT, (PIN_ATTR_DIGITAL|PIN_ATTR_ANALOG|PIN_ATTR_PWM|PIN_ATTR_TIMER_ALT), ADC_Channel16, PWM1_CH2, TCC1_CH2, EXTERNAL_INT_NMI },   // D17 / CS

  // USB pins
  { PORTA, 28, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable
  { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
  { PORTA, 25, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP


} ;

const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TC3, TC4, TC5 } ;

// Multi-serial objects instantiation
SERCOM sercom0( SERCOM0 ) ;
SERCOM sercom1( SERCOM1 ) ;
SERCOM sercom2( SERCOM2 ) ;
SERCOM sercom3( SERCOM3 ) ;

Uart Serial1( &sercom0, PIN_SERIAL1_RX, PIN_SERIAL1_TX, PAD_SERIAL1_RX, PAD_SERIAL1_TX ) ;

void SERCOM0_Handler()
{
  Serial1.IrqHandler();
}

void initVariant(void) {
  // special initialization code just for us

  // turn on neopixel
  pinMode(12, OUTPUT);
  digitalWrite(12, HIGH);
}