/**
  pins_arduino.h - Pin definition functions for Arduino for ATmega 16

  Based on the code from the following places
  - Alternate core - http://www.avr-developers.com/corefiles/index.html
  - Arduino - http://www.arduino.cc/

  @author: Sudar <http://hardwarefun.com>

*/

#ifndef Pins_Arduino_h
#define Pins_Arduino_h

#include <avr/pgmspace.h>

#define NUM_DIGITAL_PINS            32
#define NUM_ANALOG_INPUTS           8
#define analogInputToDigitalPin(p)  ((p < 8) ? (p) + 24 : -1)
#define digitalPinHasPWM(p)         ((p) == 4 || (p) == 5 || (p) == 7 || (p) == 11)

static const uint8_t SS   = 12;
static const uint8_t MOSI = 13;
static const uint8_t MISO = 14;
static const uint8_t SCK  = 15;

static const uint8_t SDA = 17;
static const uint8_t SCL = 16;
static const uint8_t LED_BUILTIN = 13; // We don't have a built-in LED, but still ..

static const uint8_t A0 = 24;
static const uint8_t A1 = 25;
static const uint8_t A2 = 26;
static const uint8_t A3 = 27;
static const uint8_t A4 = 28;
static const uint8_t A5 = 29;
static const uint8_t A6 = 30;
static const uint8_t A7 = 31;

//TODO: these are not assigned properly. Need to test more
#define digitalPinToPCICR(p)    (((p) >= 0 && (p) <= 32) ? (&PCICR) : ((uint8_t *)0))
#define digitalPinToPCICRbit(p) (((p) <= 7) ? 2 : (((p) <= 13) ? 0 : 1))
#define digitalPinToPCMSK(p)    (((p) <= 7) ? (&PCMSK2) : (((p) <= 13) ? (&PCMSK0) : (((p) <= 21) ? (&PCMSK1) : ((uint8_t *)0))))
#define digitalPinToPCMSKbit(p) (((p) <= 7) ? (p) : (((p) <= 13) ? ((p) - 8) : ((p) - 14)))

#ifdef ARDUINO_MAIN

// digital pins are also used for the analog output (software PWM).
// Analog input pins are a separate set.

// ATMEL ATMEGA16 & 16A
//
//                   +-\/-+
//      (D  8) PB0  1|    |40  PA0 (AI 0)
//      (D  9) PB1  2|    |39  PA1 (AI 1)
//      (D 10) PB2  3|    |38  PA2 (AI 2)
//  PWM (D 11) PB3  4|    |37  PA3 (AI 3)
//      (D 12) PB4  5|    |36  PA4 (AI 4)
//      (D 13) PB5  6|    |35  PA5 (AI 5)
//      (D 14) PB6  7|    |34  PA6 (AI 6)
//      (D 15) PB7  8|    |33  PA7 (AI 7) 
//           RESET  9|    |32  AREF
//             VCC 10|    |31  GND
//             GND 11|    |30  AVCC
//           XTAL2 12|    |29  PB7 (D 23)
//           XTAL1 13|    |28  PC6 (D 22)
//       (D 0) PD0 14|    |27  PC5 (D 21)
//       (D 1) PD1 15|    |26  PC4 (D 20)
//       (D 2) PD2 16|    |25  PC3 (D 19) 
//       (D 3) PD3 17|    |24  PC2 (D 18)
//   PWM (D 4) PD4 18|    |23  PC1 (D 17)
//   PWM (D 5) PD5 19|    |22  PC0 (D 16) 
//       (D 6) PD6 20|    |21  PD7 (D 7) PWM
//                   +----+

// these arrays map port names (e.g. port B) to the
// appropriate addresses for various functions (e.g. reading
// and writing)
const uint16_t PROGMEM port_to_mode_PGM[] = {
	NOT_A_PORT,
	(uint16_t) &DDRA,
	(uint16_t) &DDRB,
	(uint16_t) &DDRC,
	(uint16_t) &DDRD,
};

const uint16_t PROGMEM port_to_output_PGM[] = {
	NOT_A_PORT,
	(uint16_t) &PORTA,
	(uint16_t) &PORTB,
	(uint16_t) &PORTC,
	(uint16_t) &PORTD,
};

const uint16_t PROGMEM port_to_input_PGM[] = {
	NOT_A_PIN,
	(uint16_t) &PINA,
	(uint16_t) &PINB,
	(uint16_t) &PINC,
	(uint16_t) &PIND,
};

const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
	PD, /* 0 */
	PD,
	PD,
	PD,
	PD,
	PD,
	PD,
	PD,
	PB, /* 8 */
	PB,
	PB,
	PB,
	PB,
	PB,
	PB,
	PB,
	PC, /* 16 */
	PC,
	PC,
	PC,
	PC,
	PC,
	PC,
	PC,
	PA, /* 24 */
	PA,
	PA,
	PA,
	PA,
	PA,
	PA,
	PA,
};

const uint8_t PROGMEM digital_pin_to_bit_mask_PGM[] = {
	_BV(0), /* 0, port D */
	_BV(1),
	_BV(2),
	_BV(3),
	_BV(4),
	_BV(5),
	_BV(6),
	_BV(7),
	_BV(0), /* 8, port B */
	_BV(1),
	_BV(2),
	_BV(3),
	_BV(4),
	_BV(5),
	_BV(6),
	_BV(7),
	_BV(0), /* 16, port C */
	_BV(1),
	_BV(2),
	_BV(3),
	_BV(4),
	_BV(5),
	_BV(6),
	_BV(7),
	_BV(0), /* 24, port A */
	_BV(1),
	_BV(2),
	_BV(3),
	_BV(4),
	_BV(5),
	_BV(6),
	_BV(7),
};

const uint8_t PROGMEM digital_pin_to_timer_PGM[] = {
	NOT_ON_TIMER, /* 0 - port D */
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	TIMER1B,
	TIMER1A,
	NOT_ON_TIMER,
	TIMER2,
	NOT_ON_TIMER, /* 8 - port B */
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	TIMER0A,      /* TODO: Need to verify it */
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER, /* 16 - port C */
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER, /* 24 - port A */
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
	NOT_ON_TIMER,
};

#endif

#endif