/*
  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"

/*
 * Pins descriptions
 */

//TCC0 IOSET 6
//TCC1 IOSET 1
//TC0 IOSET 1
//TC1 IOSET 1
//TC2 IOSET 2
//TC3 IOSET 1
//TC4 IOSET 1
const PinDescription g_APinDescription[]=
{
  // 0..13 - Digital pins
  // ----------------------
  // 0/1 - SERCOM/UART (Serial1)
  { PORTA,  1, PIO_SERCOM_ALT, PIN_ATTR_PWM_E, No_ADC_Channel, TC2_CH1, TC2_CH1, EXTERNAL_INT_1 }, // RX: SERCOM1/PAD[1]
  { PORTA,  0, PIO_SERCOM_ALT, PIN_ATTR_PWM_E, No_ADC_Channel, TC2_CH0, TC2_CH0, EXTERNAL_INT_0 }, // TX: SERCOM1/PAD[0]

  // 2..3 buttons
  { PORTB, 22, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_6 }, // Up
  { PORTB, 23, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7 }, // Down

  // 4 neopixel
  { PORTA, 23, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7 }, // NeoPixel

  // 5..6 I2C
  { PORTB, 31, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_15 }, // SERCOM5.1 SDA
  { PORTB, 30, PIO_SERCOM_ALT, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_14 }, // SERCOM5.0 SCL

  // 7..12 RGBRGB pins
  { PORTB,  0, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_0 }, // R1
  { PORTB,  1, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_1 }, // G1
  { PORTB,  2, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // B1
  { PORTB,  3, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_3 }, // R2
  { PORTB,  4, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_4 }, // G2
  { PORTB,  5, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // B2

  // 13 LED
  { PORTA, 14, PIO_DIGITAL, PIN_ATTR_PWM_G, No_ADC_Channel, TCC1_CH2, TCC1_CH2, EXTERNAL_INT_14 }, // Red LED

  // 14..21  Control pins
  { PORTB,  6, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_6 }, // CLK
  { PORTB, 14, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_14 }, // LAT
  { PORTB, 12, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_12 }, // OE
  { PORTB,  7, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7 }, // ADDR A
  { PORTB,  8, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_8 }, // ADDR B
  { PORTB,  9, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_9 }, // ADDR C
  { PORTB, 15, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_15 }, // ADDR D
  { PORTB, 13, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_13 }, // ADDR E

  // 22..26 Analog pins
  // --------------------
  { PORTA,  2, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel0, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_2 }, // A0
  { PORTA,  5, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel5, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // A1
  { PORTA,  4, PIO_ANALOG, (PIN_ATTR_ANALOG|PIN_ATTR_PWM_E), ADC_Channel4, TC0_CH0, TC0_CH0, EXTERNAL_INT_4 }, // A2
  { PORTA,  6, PIO_ANALOG, (PIN_ATTR_ANALOG|PIN_ATTR_PWM_E), ADC_Channel6, TC1_CH0, TC1_CH0, EXTERNAL_INT_6 }, // A3
  { PORTA,  7, PIO_ANALOG, PIN_ATTR_ANALOG, ADC_Channel7, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7 }, // A4

  // 27..28 ESP UART
  // ----------------------
  { PORTA, 12, PIO_SERCOM_ALT, PIN_ATTR_PWM_E, No_ADC_Channel, TC2_CH0, TC2_CH0, EXTERNAL_INT_12 }, // RX: SERCOM4/PAD[1]
  { PORTA, 13, PIO_SERCOM_ALT, PIN_ATTR_PWM_E, No_ADC_Channel, TC2_CH1, TC2_CH1, EXTERNAL_INT_13 }, // TX: SERCOM4/PAD[0]

  // 29..33 ESP control
  { PORTA, 20, PIO_DIGITAL, PIN_ATTR_PWM_G, No_ADC_Channel, TCC0_CH0, NOT_ON_TIMER, EXTERNAL_INT_4 }, // ESP GPIO0
  { PORTA, 21, PIO_DIGITAL, PIN_ATTR_PWM_G, No_ADC_Channel, TCC0_CH1, NOT_ON_TIMER, EXTERNAL_INT_5 }, // ESP Reset
  { PORTA, 22, PIO_DIGITAL, PIN_ATTR_PWM_G, No_ADC_Channel, TCC0_CH2, NOT_ON_TIMER, EXTERNAL_INT_6 }, // ESP Busy
  { PORTA, 18, PIO_DIGITAL, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH2, NOT_ON_TIMER, EXTERNAL_INT_2 }, // ESP RTS
  { PORTB, 17, PIO_DIGITAL, PIN_ATTR_PWM_G, No_ADC_Channel, TCC0_CH4, NOT_ON_TIMER, EXTERNAL_INT_1 }, // ESP CS

  // 34..36 ESP SPI
  { PORTA, 16, PIO_SERCOM_ALT, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH0, TC2_CH0, EXTERNAL_INT_0 }, // SCK: SERCOM3/PAD[1]
  { PORTA, 17, PIO_SERCOM_ALT, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH1, TC2_CH1, EXTERNAL_INT_1 }, // MISO: SERCOM3/PAD[0]
  { PORTA, 19, PIO_SERCOM_ALT, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH3, TC3_CH1, EXTERNAL_INT_3 }, // MOSI: SERCOM1/PAD[3]

  // 37..39 - USB
  // --------------------
  { NOT_A_PORT, 0, PIO_NOT_A_PIN, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB Host enable DOES NOT EXIST ON THIS BOARD
  { PORTA, 24, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DM
  { PORTA, 27, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // USB/DP

  // 40 (AREF)
  { PORTA, 3, PIO_ANALOG, PIN_ATTR_ANALOG, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE }, // DAC/VREFP

  // ----------------------
  // 41..46 QSPI (SCK, CS, IO0, IO1, IO2, IO3)
  { PORTB, 10, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
  { PORTB, 11, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
  { PORTA, 8, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
  { PORTA, 9, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
  { PORTA, 10, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },
  { PORTA, 11, PIO_COM, PIN_ATTR_NONE, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_NONE },

  // 47 LIS IRQ
  { PORTA, 27, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_11 }, // IRQ

  // 48..50 external SPI #2 on sercom 0
  { PORTA,  5, PIO_SERCOM_ALT, PIN_ATTR_ANALOG, ADC_Channel5, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_5 }, // SCK SERCOM 0.1
  { PORTA,  4, PIO_SERCOM_ALT, (PIN_ATTR_ANALOG|PIN_ATTR_PWM_E), ADC_Channel4, TC0_CH0, TC0_CH0, EXTERNAL_INT_4 }, // MOSI SERCOM 0.0
  { PORTA,  7, PIO_SERCOM_ALT, PIN_ATTR_ANALOG, ADC_Channel7, NOT_ON_PWM, NOT_ON_TIMER, EXTERNAL_INT_7 }, // MISO SERCOM 0.3
} ;

const void* g_apTCInstances[TCC_INST_NUM+TC_INST_NUM]={ TCC0, TCC1, TCC2, TCC3, TCC4, TC0, TC1, TC2, TC3, TC4, TC5 } ;
const uint32_t GCLK_CLKCTRL_IDs[TCC_INST_NUM+TC_INST_NUM] = { TCC0_GCLK_ID, TCC1_GCLK_ID, TCC2_GCLK_ID, TCC3_GCLK_ID, TCC4_GCLK_ID, TC0_GCLK_ID, TC1_GCLK_ID, TC2_GCLK_ID, TC3_GCLK_ID, TC4_GCLK_ID, TC5_GCLK_ID } ;

// Multi-serial objects instantiation
SERCOM sercom0( SERCOM0 ) ;
SERCOM sercom1( SERCOM1 ) ;
SERCOM sercom2( SERCOM2 ) ;
SERCOM sercom3( SERCOM3 ) ;
SERCOM sercom4( SERCOM4 ) ;
SERCOM sercom5( SERCOM5 ) ;

Uart Serial1( &sercom1, PIN_SERIAL1_RX, PIN_SERIAL1_TX, PAD_SERIAL1_RX, PAD_SERIAL1_TX ) ;

void SERCOM1_0_Handler()
{
  Serial1.IrqHandler();
}
void SERCOM1_1_Handler()
{
  Serial1.IrqHandler();
}
void SERCOM1_2_Handler()
{
  Serial1.IrqHandler();
}
void SERCOM1_3_Handler()
{
  Serial1.IrqHandler();
}


// sercom for internal ESP32 UART connection
Uart Serial2( &sercom4, PIN_SERIAL2_RX, PIN_SERIAL2_TX, PAD_SERIAL2_RX, PAD_SERIAL2_TX ) ;

void SERCOM4_0_Handler()
{
  Serial2.IrqHandler();
}
void SERCOM4_1_Handler()
{
  Serial2.IrqHandler();
}
void SERCOM4_2_Handler()
{
  Serial2.IrqHandler();
}
void SERCOM4_3_Handler()
{
  Serial2.IrqHandler();
}